Fix bin/publish: copy docs.dist from project root

Fix bin/publish: use correct .env path for rspade_system
Fix bin/publish script: prevent grep exit code 1 from terminating script

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node_modules/terser/CHANGELOG.md

@@ -0,0 +1,843 @@
+# Changelog
+
+## v5.44.0
+
+ - Support `using` and `await using` declarations (#1635)
+
+## v5.43.1
+
+ - Prevent niche optimizations that would move around block declarations
+ - Add `lhs_constants` to `CompressOptions` type (#1621)
+
+## v5.43.0
+
+ - Do not wrap callbacks in parentheses (`wrap_func_args` format option is now false by default)
+ - Do not inline functions into for loops (for performance reasons)
+
+## v5.42.0
+
+ - Improved performance in the parse step by adding a fast path for simple identifiers.
+ - Improved ESTree conversion
+
+## v5.41.0
+
+ - fixed semicolon insertion between class fields, when the field names are number literals
+ - `keep_numbers` format option now works for bigint
+ - internal: correctly mark accessors' is_generator property
+ - internal: do not read or assign quote properties without need
+ - internal: add missing equivalent_to comparison
+
+## v5.40.0
+
+ - Fix exporting AssignmentExpression (default assign pattern) to ESTree
+ - Fix ESTree output of object keys with quotes
+ - Fix handling of an ESTree empty `export {}` (#1601)
+ - Fix some `const` and `let` resulting from ESTree input (#1599)
+
+## v5.39.2
+
+ - Fix crash when parsing bare `yield` inside a template string.
+ - Update internally used acorn version requirement
+
+## v5.39.1
+
+ - Fix bitwise operations that could mix `BigInt` and `number`
+
+## v5.39.0
+
+ - Remove unnecessary `console.assert` calls (#1590)
+
+## v5.38.2
+
+ - internal: Flatten inheritance tree for object/class members
+
+## v5.38.1
+
+ - Fix inlining non-call expressions into an `optional_call?.()`
+
+## v5.38.0
+
+ - Remove `console` method-of-method calls (eg `console.log.apply()`) when `drop_console` option is used (#1585)
+ - Remove more object spreads, such as `{ ...void !0 }` (#1142)
+
+## v5.37.0
+
+ - Reserved object properties from chrome extensions (domprops)
+ - Fix semicolon insertion between a class property without a semicolon `a` and a computed class property `["prop"]`
+
+## v5.36.0
+
+ - Support import attributes `with` syntax
+
+## v5.35.0
+
+ - Ensure parent directory exists when using --output on CLI (#1530)
+
+## v5.34.1
+
+ - bump the rollup devDependency to disable CVE warnings (Terser was not affected)
+
+## v5.34.0
+
+ - internal: stop assigning properties to objects they don't belong in
+ - internal: run compress tests in parallel
+ - `drop_console`: emit an empty function if the return value of `console.METHOD(...)` may be called.
+
+## v5.33.0
+
+ - `reduce_vars` improved when dealing with hoisted function definitions (#1544)
+
+## v5.32.0
+
+ - `import("module")` can now be input and output from ESTree AST (#1557)
+ - `BigInt` literals can now be input and output from ESTree AST (#1555)
+ - `typeof` an object or array (`typeof {}` and `typeof []`) can now be statically evaluated. (#1546)
+
+## v5.31.6
+ - Retain side effects in a `case` when the expression is a sequence (comma) expression
+
+## v5.31.5
+ - Revert v5.31.4, which created mysterious issues #1548, #1549
+
+## v5.31.4 (reverted)
+ - drop_unused: drop classes which only have side effects in the `extends` part
+
+## v5.31.3
+ - drop_unused: drop unused parameters from IIFEs in some more situations.
+
+## v5.31.2
+ - drop_unused: scan variables in self-referential class declarations that contain side effects.
+ - Don't add parens to arrow function when it's the default for an argument (#1540)
+ - Update domprops (#1538)
+
+## v5.31.1
+ - Allow drop-unused to drop the whole assignment (not just the assigned name) in more situations, in order to avoid duplication of long strings.
+
+## v5.31.0
+ - Sync up property mangler exceptions with current contents of Firefox and Chrome environments
+ - Add more webcomponent properties to property mangler exceptions (#1525)
+ - Drop non-nullish constants in `...spreads` in objects (#1141)
+
+## v5.30.4
+ - Fix parsing `#private in ...` when next to other operators
+
+## v5.30.3
+ - Fix precedence of `#private in ...` operator
+
+## v5.30.2
+ - Avoid optimizations inside computed keys, because they can cause js-engine-specific bugs.
+
+## v5.30.1
+ - Removed useless `\` escapes for non-ascii characters
+ - Make modern identifier characters quoted for older environments (#1512)
+
+## v5.30.0
+ - Improve removal of classes referring to themselves
+
+## v5.29.2
+ - Make sure 'computed_props' creates string keys
+ - Take into account the evaluated size when inlining
+
+## v5.29.1
+ - fix optimisation of all-bits mask check
+
+## v5.29.0
+ - Re-releases previously reverted 5.28.0
+ - Fix crash while optimizing some bitwise ops
+ - (internal) Remove needless wrapper for from_moz (#1499)
+
+## v5.28.1
+(hotfix release)
+ - Reverts v5.28.0
+
+## v5.28.0
+ - Optimise redundant or shrinkable bitwise operations (`|`, `^`, `&`, `>>`, `<<`)
+ - Evaluate some `BigInt` math operations
+
+## v5.27.2
+ - Recognise `this` as a reference to the surrounding class in `drop_unused`. Closes #1472
+
+## v5.27.1
+ - Fixed case where `collapse_vars` inlines `await` expressions into non-async functions.
+
+## v5.27.0
+ - Created `minify_sync()` alternative to `minify()` since there's no async code left.
+
+## v5.26.0
+ - Do not take the `/*#__PURE__*/` annotation into account when the `side_effects` compress option is off.
+ - The `preserve_annotations` option now automatically opts annotation comments in, instead of requiring the `comments` option to be configured for this.
+ - Refuse to parse empty parenthesized expressions (`()`)
+
+## v5.25.0
+ - Regex properties added to reserved property mangler (#1471)
+ - `pure_new` option added to drop unused `new` expressions.
+
+## v5.24.0
+ - Improve formatting performance in V8 by keeping a small work string and a large output string
+
+## v5.23.0
+ - When top_retain will keep a variable assignment around, inline the assignee when it's shorter than the name (#1434)
+ - Remove empty class `static {}` blocks.
+
+## v5.22.0
+ - Do not `unsafe`ly shorten expressions like a?.toString() when they're conditional.
+ - Avoid running drop_unused in nodes that aren't scopes. Fixes a rare crash.
+ - When 'module' is enabled, assume strict mode when figuring out scopes.
+
+## v5.21.0
+ - Do not inline functions that would be retained in the toplevel (as this would cause code duplication).
+ - Fix precedence of arrow function and ternary operator when formatting output.
+
+## v5.20.0
+ - Passing `minify()` zero files will now throw a clean exception (#1450)
+ - `drop_console` supports passing in an array of `console.*` method names (#1445)
+ - New DOM properties from the WebGPU API have been added for use in the property mangler (#1436)
+ - Internal code simplification (#1437)
+
+## v5.19.4
+ - Prevent creating very deeply nested ternaries from a long list of `if..return`
+ - Prevent inlining classes into other functions, to avoid constructors being compared.
+
+## v5.19.3
+ - Fix side effect detection of `optional?.chains`.
+ - Add roundRect to domprops.js (#1426)
+
+## v5.19.2
+ - fix performance hit from avoiding HTML comments in the output
+
+## v5.19.1
+ - Better avoid outputting `</script>` and HTML comments.
+ - Fix unused variables in class static blocks not being dropped correctly.
+ - Fix sourcemap names of methods that are `async` or `static`
+
+## v5.19.0
+ - Allow `/*@__MANGLE_PROP__*/` annotation in `object.property`, in addition to property declarations.
+
+## v5.18.2
+ - Stop using recursion in hoisted defuns fix.
+
+## v5.18.1
+ - Fix major performance issue caused by hoisted defuns' scopes bugfix.
+
+## v5.18.0
+ - Add new `/*@__MANGLE_PROP__*/` annotation, to mark properties that should be mangled.
+
+## v5.17.7
+ - Update some dependencies
+ - Add consistent sorting for `v` RegExp flag
+ - Add `inert` DOM attribute to domprops
+
+## v5.17.6
+ - Fixes to mozilla AST input and output, for class properties, private properties and static blocks
+ - Fix outputting a shorthand property in quotes when safari10 and ecma=2015 options are enabled
+ - `configurable` and `enumerable`, used in Object.defineProperty, added to domprops (#1393)
+
+## v5.17.5
+ - Take into account the non-deferred bits of a class, such as static properties, while dropping unused code.
+
+## v5.17.4
+
+ - Fix crash when trying to negate a class (`!class{}`)
+ - Avoid outputting comments between `yield`/`await` and its argument
+ - Fix detection of left-hand-side of assignment, to avoid optimizing it like any other expression in some edge cases
+
+## v5.17.3
+
+ - Fix issue with trimming a static class property's contents accessing the class as `this`.
+
+## v5.17.2
+ - Be less conservative when detecting use-before-definition of `var` in hoisted functions.
+ - Support unusual (but perfectly valid) initializers of for-in and for-of loops.
+ - Fix issue where hoisted function would be dropped if it was after a `continue` statement
+
+## v5.17.1
+ - Fix evaluating `.length` when the source array might've been mutated
+
+## v5.17.0
+ - Drop vestigial `= undefined` default argument in IIFE calls (#1366)
+ - Evaluate known arrays' `.length` property when statically determinable
+ - Add `@__KEY__` annotation to mangle string literals (#1365)
+
+## v5.16.9
+ - Fix parentheses in output of optional chains (`a?.b`) (#1374)
+ - More documentation on source maps (#1368)
+ - New `lhs_constants` option, allowing to stop Terser from swapping comparison operands (#1361)
+
+## v5.16.8
+
+ - Become even less conservative around function definitions for `reduce_vars`
+ - Fix parsing context of `import.meta` expressions such that method calls are allowed
+
+## v5.16.6
+
+ - Become less conservative with analyzing function definitions for `reduce_vars`
+ - Parse `import.meta` as a real AST node and not an `object.property`
+
+## v5.16.5
+
+ - Correctly handle AST transform functions that mutate children arrays
+ - Don't mutate the options object passed to Terser (#1342)
+ - Do not treat BigInt like a number
+
+## v5.16.4
+
+ - Keep `(defaultArg = undefined) => ...`, because default args don't count for function length
+ - Prevent inlining variables into `?.` optional chains
+ - Avoid removing unused arguments while transforming
+ - Optimize iterating AST node lists
+ - Make sure `catch` and `finally` aren't children of `try` in the AST
+ - Use modern unicode property escapes (`\p{...}`) to parse identifiers when available
+
+## v5.16.3
+
+ - Ensure function definitions, don't assume the values of variables defined after them.
+
+## v5.16.2
+
+ - Fix sourcemaps with non-ascii characters (#1318)
+ - Support string module name and export * as (#1336)
+ - Do not move `let` out of `for` initializers, as it can change scoping
+ - Fix a corner case that would generate the invalid syntax `if (something) let x` ("let" in braceless if body)
+ - Knowledge of more native object properties (#1330)
+ - Got rid of Travis (#1323)
+ - Added semi-secret `asObject` sourcemap option to typescript defs (#1321)
+
+## v5.16.1
+
+ - Properly handle references in destructurings (`const { [reference]: val } = ...`)
+ - Allow parsing of `.#privatefield` in nested classes
+ - Do not evaluate operations that return large strings if that would make the output code larger
+ - Make `collapse_vars` handle block scope correctly
+ - Internal improvements: Typos (#1311), more tests, small-scale refactoring
+
+## v5.16.0
+
+ - Disallow private fields in object bodies (#1011)
+ - Parse `#privatefield in object` (#1279)
+ - Compress `#privatefield in object`
+
+## v5.15.1
+
+ - Fixed missing parentheses around optional chains
+ - Avoid bare `let` or `const` as the bodies of `if` statements (#1253)
+ - Small internal fixes (#1271)
+ - Avoid inlining a class twice and creating two equivalent but `!==` classes.
+
+## v5.15.0
+ - Basic support for ES2022 class static initializer blocks.
+ - Add `AudioWorkletNode` constructor options to domprops list (#1230)
+ - Make identity function inliner not inline `id(...expandedArgs)`
+
+## v5.14.2
+
+ - Security fix for RegExps that should not be evaluated (regexp DDOS)
+ - Source maps improvements (#1211)
+ - Performance improvements in long property access evaluation (#1213)
+
+## v5.14.1
+ - keep_numbers option added to TypeScript defs (#1208)
+ - Fixed parsing of nested template strings (#1204)
+
+## v5.14.0
+ - Switched to @jridgewell/source-map for sourcemap generation (#1190, #1181)
+ - Fixed source maps with non-terminated segments (#1106)
+ - Enabled typescript types to be imported from the package (#1194)
+ - Extra DOM props have been added (#1191)
+ - Delete the AST while generating code, as a means to save RAM
+
+## v5.13.1
+ - Removed self-assignments (`varname=varname`) (closes #1081)
+ - Separated inlining code (for inlining things into references, or removing IIFEs)
+ - Allow multiple identifiers with the same name in `var` destructuring (eg `var { a, a } = x`) (#1176)
+
+## v5.13.0
+
+ - All calls to eval() were removed (#1171, #1184)
+ - `source-map` was updated to 0.8.0-beta.0 (#1164)
+ - NavigatorUAData was added to domprops to avoid property mangling (#1166)
+
+## v5.12.1
+
+ - Fixed an issue with function definitions inside blocks (#1155)
+ - Fixed parens of `new` in some situations (closes #1159)
+
+## v5.12.0
+
+ - `TERSER_DEBUG_DIR` environment variable
+ - @copyright comments are now preserved with the comments="some" option (#1153)
+
+## v5.11.0
+
+ - Unicode code point escapes (`\u{abcde}`) are not emitted inside RegExp literals anymore (#1147)
+ - acorn is now a regular dependency
+
+## v5.10.0
+
+ - Massive optimization to max_line_len (#1109)
+ - Basic support for import assertions
+ - Marked ES2022 Object.hasOwn as a pure function
+ - Fix `delete optional?.property`
+ - New CI/CD pipeline with github actions (#1057)
+ - Fix reordering of switch branches (#1092), (#1084)
+ - Fix error when creating a class property called `get`
+ - Acorn dependency is now an optional peerDependency
+ - Fix mangling collision with exported variables (#1072)
+ - Fix an issue with `return someVariable = (async () => { ... })()` (#1073)
+
+## v5.9.0
+
+ - Collapsing switch cases with the same bodies (even if they're not next to each other) (#1070).
+ - Fix evaluation of optional chain expressions (#1062)
+ - Fix mangling collision in ESM exports (#1063)
+ - Fix issue with mutating function objects after a second pass (#1047)
+ - Fix for inlining object spread `{ ...obj }` (#1071)
+ - Typescript typings fix (#1069)
+
+## v5.8.0
+
+ - Fixed shadowing variables while moving code in some cases (#1065)
+ - Stop mangling computed & quoted properties when keep_quoted is enabled.
+ - Fix for mangling private getter/setter and .#private access (#1060, #1068)
+ - Array.from has a new optimization when the unsafe option is set (#737)
+ - Mangle/propmangle let you generate your own identifiers through the nth_identifier option (#1061)
+ - More optimizations to switch statements (#1044)
+
+## v5.7.2
+
+ - Fixed issues with compressing functions defined in `global_defs` option (#1036)
+ - New recipe for using Terser in gulp was added to RECIPES.md (#1035)
+ - Fixed issues with `??` and `?.` (#1045)
+ - Future reserved words such as `package` no longer require you to disable strict mode to be used as names.
+ - Refactored huge compressor file into multiple more focused files.
+ - Avoided unparenthesized `in` operator in some for loops (it breaks parsing because of for..in loops)
+ - Improved documentation (#1021, #1025)
+ - More type definitions (#1021)
+
+## v5.7.1
+
+ - Avoided collapsing assignments together if it would place a chain assignment on the left hand side, which is invalid syntax (`a?.b = c`)
+ - Removed undefined from object expansions (`{ ...void 0 }` -> `{}`)
+ - Fix crash when checking if something is nullish or undefined (#1009)
+ - Fixed comparison of private class properties (#1015)
+ - Minor performance improvements (#993)
+ - Fixed scope of function defs in strict mode (they are block scoped)
+
+## v5.7.0
+
+ - Several compile-time evaluation and inlining fixes
+ - Allow `reduce_funcs` to be disabled again.
+ - Add `spidermonkey` options to parse and format (#974)
+ - Accept `{get = "default val"}` and `{set = "default val"}` in destructuring arguments.
+ - Change package.json export map to help require.resolve (#971)
+ - Improve docs
+ - Fix `export default` of an anonymous class with `extends`
+
+## v5.6.1
+
+ - Mark assignments to the `.prototype` of a class as pure
+ - Parenthesize `await` on the left of `**` (while accepting legacy non-parenthesised input)
+ - Avoided outputting NUL bytes in optimized RegExps, to stop the output from breaking other tools
+ - Added `exports` to domprops (#939)
+ - Fixed a crash when spreading `...this`
+ - Fixed the computed size of arrow functions, which improves their inlining
+
+## v5.6.0
+
+ - Added top-level await
+ - Beautify option has been removed in #895
+ - Private properties, getters and setters have been added in #913 and some more commits
+ - Docs improvements: #896, #903, #916
+
+## v5.5.1
+
+ - Fixed object properties with unicode surrogates on safari.
+
+## v5.5.0
+
+ - Fixed crash when inlining uninitialized variable into template string.
+ - The sourcemap for dist was removed for being too large.
+
+## v5.4.0
+
+ - Logical assignment
+ - Change `let x = undefined` to just `let x`
+ - Removed some optimizations for template strings, placing them behind `unsafe` options. Reason: adding strings is not equivalent to template strings, due to valueOf differences.
+ - The AST_Token class was slimmed down in order to use less memory.
+
+## v5.3.8
+
+ - Restore node 13 support
+
+## v5.3.7
+
+Hotfix release, fixes package.json "engines" syntax
+
+## v5.3.6
+
+ - Fixed parentheses when outputting `??` mixed with `||` and `&&`
+ - Improved hygiene of the symbol generator
+
+## v5.3.5
+
+ - Avoid moving named functions into default exports.
+ - Enabled transform() for chain expressions. This allows AST transformers to reach inside chain expressions.
+
+## v5.3.4
+
+ - Fixed a crash when hoisting (with `hoist_vars`) a destructuring variable declaration
+
+## v5.3.3
+
+ - `source-map` library has been updated, bringing memory usage and CPU time improvements when reading input source maps (the SourceMapConsumer is now WASM based).
+ - The `wrap_func_args` option now also wraps arrow functions, as opposed to only function expressions.
+
+## v5.3.2
+
+ - Prevented spread operations from being expanded when the expanded array/object contains getters, setters, or array holes.
+ - Fixed _very_ slow self-recursion in some cases of removing extraneous parentheses from `+` operations.
+
+## v5.3.1
+
+ - An issue with destructuring declarations when `pure_getters` is enabled has been fixed
+ - Fixed a crash when chain expressions need to be shallowly compared
+ - Made inlining functions more conservative to make sure a function that contains a reference to itself isn't moved into a place that can create multiple instances of itself.
+
+## v5.3.0
+
+ - Fixed a crash when compressing object spreads in some cases
+ - Fixed compiletime evaluation of optional chains (caused typeof a?.b to always return "object")
+ - domprops has been updated to contain every single possible prop
+
+## v5.2.1
+
+ - The parse step now doesn't accept an `ecma` option, so that all ES code is accepted.
+ - Optional dotted chains now accept keywords, just like dotted expressions (`foo?.default`)
+
+## v5.2.0
+
+ - Optional chaining syntax is now supported.
+ - Consecutive await expressions don't have unnecessary parens
+ - Taking the variable name's length (after mangling) into consideration when deciding to inline
+
+## v5.1.0
+
+ - `import.meta` is now supported
+ - Typescript typings have been improved
+
+## v5.0.0
+
+ - `in` operator now taken into account during property mangle.
+ - Fixed infinite loop in face of a reference loop in some situations.
+ - Kept exports and imports around even if there's something which will throw before them.
+ - The main exported bundle for commonjs, dist/bundle.min.js is no longer minified.
+
+## v5.0.0-beta.0
+
+ - BREAKING: `minify()` is now async and rejects a promise instead of returning an error.
+ - BREAKING: Internal AST is no longer exposed, so that it can be improved without releasing breaking changes.
+ - BREAKING: Lowest supported node version is 10
+ - BREAKING: There are no more warnings being emitted
+ - Module is now distributed as a dual package - You can `import` and `require()` too.
+ - Inline improvements were made
+
+
+-----
+
+## v4.8.1 (backport)
+
+ - Security fix for RegExps that should not be evaluated (regexp DDOS)
+
+## v4.8.0
+
+ - Support for numeric separators (`million = 1_000_000`) was added.
+ - Assigning properties to a class is now assumed to be pure.
+ - Fixed bug where `yield` wasn't considered a valid property key in generators.
+
+## v4.7.0
+
+ - A bug was fixed where an arrow function would have the wrong size
+ - `arguments` object is now considered safe to retrieve properties from (useful for `length`, or `0`) even when `pure_getters` is not set.
+ - Fixed erroneous `const` declarations without value (which is invalid) in some corner cases when using `collapse_vars`.
+
+## v4.6.13
+
+ - Fixed issue where ES5 object properties were being turned into ES6 object properties due to more lax unicode rules.
+ - Fixed parsing of BigInt with lowercase `e` in them.
+
+## v4.6.12
+
+ - Fixed subtree comparison code, making it see that `[1,[2, 3]]` is different from `[1, 2, [3]]`
+ - Printing of unicode identifiers has been improved
+
+## v4.6.11
+
+ - Read unused classes' properties and method keys, to figure out if they use other variables.
+ - Prevent inlining into block scopes when there are name collisions
+ - Functions are no longer inlined into parameter defaults, because they live in their own special scope.
+ - When inlining identity functions, take into account the fact they may be used to drop `this` in function calls.
+ - Nullish coalescing operator (`x ?? y`), plus basic optimization for it.
+ - Template literals in binary expressions such as `+` have been further optimized
+
+## v4.6.10
+
+ - Do not use reduce_vars when classes are present
+
+## v4.6.9
+
+ - Check if block scopes actually exist in blocks
+
+## v4.6.8
+
+ - Take into account "executed bits" of classes like static properties or computed keys, when checking if a class evaluation might throw or have side effects.
+
+## v4.6.7
+
+ - Some new performance gains through a `AST_Node.size()` method which measures a node's source code length without printing it to a string first.
+ - An issue with setting `--comments` to `false` in the CLI has been fixed.
+ - Fixed some issues with inlining
+ - `unsafe_symbols` compress option was added, which turns `Symbol("name")` into just `Symbol()`
+ - Brought back compress performance improvement through the `AST_Node.equivalent_to(other)` method (which was reverted in v4.6.6).
+
+## v4.6.6
+
+(hotfix release)
+
+ - Reverted code to 4.6.4 to allow for more time to investigate an issue.
+
+## v4.6.5 (REVERTED)
+
+ - Improved compress performance through using a new method to see if two nodes are equivalent, instead of printing them to a string.
+
+## v4.6.4
+
+ - The `"some"` value in the `comments` output option now preserves `@lic` and other important comments when using `//`
+ - `</script>` is now better escaped in regex, and in comments, when using the `inline_script` output option
+ - Fixed an issue when transforming `new RegExp` into `/.../` when slashes are included in the source
+ - `AST_Node.prototype.constructor` now exists, allowing for easier debugging of crashes
+ - Multiple if statements with the same consequents are now collapsed
+ - Typescript typings improvements
+ - Optimizations while looking for surrogate pairs in strings
+
+## v4.6.3
+
+ - Annotations such as `/*#__NOINLINE__*/` and `/*#__PURE__*/` may now be preserved using the `preserve_annotations` output option
+ - A TypeScript definition update for the `keep_quoted` output option.
+
+## v4.6.2
+
+ - A bug where functions were inlined into other functions with scope conflicts has been fixed.
+ - `/*#__NOINLINE__*/` annotation fixed for more use cases where inlining happens.
+
+## v4.6.1
+
+ - Fixed an issue where a class is duplicated by reduce_vars when there's a recursive reference to the class.
+
+## v4.6.0
+
+ - Fixed issues with recursive class references.
+ - BigInt evaluation has been prevented, stopping Terser from evaluating BigInts like it would do regular numbers.
+ - Class property support has been added
+
+## v4.5.1
+
+(hotfix release)
+
+ - Fixed issue where `() => ({})[something]` was not parenthesised correctly.
+
+## v4.5.0
+
+ - Inlining has been improved
+ - An issue where keep_fnames combined with functions declared through variables was causing name shadowing has been fixed
+ - You can now set the ES version through their year
+ - The output option `keep_numbers` has been added, which prevents Terser from turning `1000` into `1e3` and such
+ - Internal small optimisations and refactors
+
+## v4.4.3
+
+ - Number and BigInt parsing has been fixed
+ - `/*#__INLINE__*/` annotation fixed for arrow functions with non-block bodies.
+ - Functional tests have been added, using [this repository](https://github.com/terser/terser-functional-tests).
+ - A memory leak, where the entire AST lives on after compression, has been plugged.
+
+## v4.4.2
+
+ - Fixed a problem with inlining identity functions
+
+## v4.4.1
+
+*note:* This introduced a feature, therefore it should have been a minor release.
+
+ - Fixed a crash when `unsafe` was enabled.
+ - An issue has been fixed where `let` statements might be collapsed out of their scope.
+ - Some error messages have been improved by adding quotes around variable names.
+
+## v4.4.0
+
+ - Added `/*#__INLINE__*/` and `/*#__NOINLINE__*/` annotations for calls. If a call has one of these, it either forces or forbids inlining.
+
+## v4.3.11
+
+ - Fixed a problem where `window` was considered safe to access, even though there are situations where it isn't (Node.js, workers...)
+ - Fixed an error where `++` and `--` were considered side-effect free
+ - `Number(x)` now needs both `unsafe` and and `unsafe_math` to be compressed into `+x` because `x` might be a `BigInt`
+ - `keep_fnames` now correctly supports regexes when the function is in a variable declaration
+
+## v4.3.10
+
+ - Fixed syntax error when repeated semicolons were encountered in classes
+ - Fixed invalid output caused by the creation of empty sequences internally
+ - Scopes are now updated when scopes are inlined into them
+
+## v4.3.9
+ - Fixed issue with mangle's `keep_fnames` option, introduced when adding code to keep variable names of anonymous functions
+
+## v4.3.8
+
+ - Typescript typings fix
+
+## v4.3.7
+
+ - Parsing of regex options in the CLI (which broke in v4.3.5) was fixed.
+ - typescript definition updates
+
+## v4.3.6
+
+(crash hotfix)
+
+## v4.3.5
+
+ - Fixed an issue with DOS line endings strings separated by `\` and a new line.
+ - Improved fix for the output size regression related to unused references within the extends section of a class.
+ - Variable names of anonymous functions (eg: `const x = () => { ... }` or `var func = function () {...}`) are now preserved when keep_fnames is true.
+ - Fixed performance degradation introduced for large payloads in v4.2.0
+
+## v4.3.4
+
+ - Fixed a regression where the output size was increased when unused classes were referred to in the extends clause of a class.
+ - Small typescript typings fixes.
+ - Comments with `@preserve`, `@license`, `@cc_on` as well as comments starting with `/*!` and `/**!` are now preserved by default.
+
+## v4.3.3
+
+ - Fixed a problem where parsing template strings would mix up octal notation and a slash followed by a zero representing a null character.
+ - Started accepting the name `async` in destructuring arguments with default value.
+ - Now Terser takes into account side effects inside class `extends` clauses.
+ - Added parens whenever there's a comment between a return statement and the returned value, to prevent issues with ASI.
+ - Stopped using raw RegExp objects, since the spec is going to continue to evolve. This ensures Terser is able to process new, unknown RegExp flags and features. This is a breaking change in the AST node AST_RegExp.
+
+## v4.3.2
+
+ - Typescript typing fix
+ - Ensure that functions can't be inlined, by reduce_vars, into places where they're accessing variables with the same name, but from somewhere else.
+
+## v4.3.1
+
+ - Fixed an issue from 4.3.0 where any block scope within a for loop erroneously had its parent set to the function scopee
+ - Fixed an issue where compressing IIFEs with argument expansions would result in some parameters becoming undefined
+ - addEventListener options argument's properties are now part of the DOM properties list.
+
+## v4.3.0
+
+ - Do not drop computed object keys with side effects
+ - Functions passed to other functions in calls are now wrapped in parentheses by default, which speeds up loading most modules
+ - Objects with computed properties are now less likely to be hoisted
+ - Speed and memory efficiency optimizations
+ - Fixed scoping issues with `try` and `switch`
+
+## v4.2.1
+
+ - Minor refactors
+ - Fixed a bug similar to #369 in collapse_vars
+ - Functions can no longer be inlined into a place where they're going to be compared with themselves.
+ - reduce_funcs option is now legacy, as using reduce_vars without reduce_funcs caused some weird corner cases. As a result, it is now implied in reduce_vars and can't be turned off without turning off reduce_vars.
+ - Bug which would cause a random stack overflow has now been fixed.
+
+## v4.2.0
+
+ - When the source map URL is `inline`, don't write it to a file.
+ - Fixed output parens when a lambda literal is the tag on a tagged template string.
+ - The `mangle.properties.undeclared` option was added. This enables the property mangler to mangle properties of variables which can be found in the name cache, but whose properties are not known to this Terser run.
+ - The v8 bug where the toString and source representations of regexes like `RegExp("\\\n")` includes an actual newline is now fixed.
+ - Now we're guaranteed to not have duplicate comments in the output
+ - Domprops updates
+
+## v4.1.4
+
+ - Fixed a crash when inlining a function into somewhere else when it has interdependent, non-removable variables.
+
+## v4.1.3
+
+ - Several issues with the `reduce_vars` option were fixed.
+ - Starting this version, we only have a dist/bundle.min.js
+
+## v4.1.2
+
+ - The hotfix was hotfixed
+
+## v4.1.1
+
+ - Fixed a bug where toplevel scopes were being mixed up with lambda scopes
+
+## v4.1.0
+
+ - Internal functions were replaced by `Object.assign`, `Array.prototype.some`, `Array.prototype.find` and `Array.prototype.every`.
+ - A serious issue where some ESM-native code was broken was fixed.
+ - Performance improvements were made.
+ - Support for BigInt was added.
+ - Inline efficiency was improved. Functions are now being inlined more proactively instead of being inlined only after another Compressor pass.
+
+## v4.0.2
+
+(Hotfix release. Reverts unmapped segments PR [#342](https://github.com/terser/terser/pull/342), which will be put back on Terser when the upstream issue is resolved)
+
+## v4.0.1
+
+ - Collisions between the arguments of inlined functions and names in the outer scope are now being avoided while inlining
+ - Unmapped segments are now preserved when compressing a file which has source maps
+ - Default values of functions are now correctly converted from Mozilla AST to Terser AST
+ - JSON ⊂ ECMAScript spec (if you don't know what this is you don't need to)
+ - Export AST_* classes to library users
+ - Fixed issue with `collapse_vars` when functions are created with the same name as a variable which already exists
+ - Added `MutationObserverInit` (Object with options for initialising a mutation observer) properties to the DOM property list
+ - Custom `Error` subclasses are now internally used instead of old-school Error inheritance hacks.
+ - Documentation fixes
+ - Performance optimizations
+
+## v4.0.0
+
+ - **breaking change**: The `variables` property of all scopes has become a standard JavaScript `Map` as opposed to the old bespoke `Dictionary` object.
+ - Typescript definitions were fixed
+ - `terser --help` was fixed
+ - The public interface was cleaned up
+ - Fixed optimisation of `Array` and `new Array`
+ - Added the `keep_quoted=strict` mode to mangle_props, which behaves more like Google Closure Compiler by mangling all unquoted property names, instead of reserving quoted property names automatically.
+ - Fixed parent functions' parameters being shadowed in some cases
+ - Allowed Terser to run in a situation where there are custom functions attached to Object.prototype
+ - And more bug fixes, optimisations and internal changes
+
+## v3.17.0
+
+ - More DOM properties added to --mangle-properties's DOM property list
+ - Closed issue where if 2 functions had the same argument name, Terser would not inline them together properly
+ - Fixed issue with `hasOwnProperty.call`
+ - You can now list files to minify in a Terser config file
+ - Started replacing `new Array(<number>)` with an array literal
+ - Started using ES6 capabilities like `Set` and the `includes` method for strings and arrays
+
+## v3.16.1
+
+ - Fixed issue where Terser being imported with `import` would cause it not to work due to the `__esModule` property. (PR #254 was submitted, which was nice, but since it wasn't a pure commonJS approach I decided to go with my own solution)
+
+## v3.16.0
+
+ - No longer leaves names like Array or Object or window as a SimpleStatement (statement which is just a single expression).
+ - Add support for sections sourcemaps (IndexedSourceMapConsumer)
+ - Drops node.js v4 and starts using commonJS
+ - Is now built with rollup
+
+## v3.15.0
+
+ - Inlined spread syntax (`[...[1, 2, 3], 4, 5] => [1, 2, 3, 4, 5]`) in arrays and objects.
+ - Fixed typo in compressor warning
+ - Fixed inline source map input bug
+ - Fixed parsing of template literals with unnecessary escapes (Like `\\a`)

node_modules/terser/LICENSE

@@ -0,0 +1,27 @@
+Copyright 2012-2018 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+    * Redistributions of source code must retain the above
+      copyright notice, this list of conditions and the following
+      disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials
+      provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.

node_modules/terser/PATRONS.md

@@ -0,0 +1,15 @@
+# Our patrons
+
+These are the first-tier patrons from Patreon (notice: **The Terser Patreon is shutting down in favor of opencollective**). My appreciation goes to everyone on this list for supporting the project!
+
+ * 38elements
+ * Alan Orozco
+ * Aria Buckles
+ * CKEditor
+ * Mariusz Nowak
+ * Nakshatra Mukhopadhyay
+ * Philippe Léger
+ * Piotrek Koszuliński
+ * Serhiy Shyyko
+ * Viktor Hubert
+ * 龙腾道

node_modules/terser/bin/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "bin",
+  "private": true,
+  "version": "1.0.0",
+  "main": "terser",
+  "type": "commonjs",
+  "author": "",
+  "license": "BSD-2-Clause",
+  "description": "A package to hold the Terser bin bundle as commonjs while keeping the rest of it ESM."
+}

node_modules/terser/bin/terser

@@ -0,0 +1,21 @@
+#!/usr/bin/env node
+
+"use strict";
+
+require("../tools/exit.cjs");
+
+try {
+    require("source-map-support").install();
+} catch (err) {}
+
+const fs = require("fs");
+const path = require("path");
+const program = require("commander");
+
+const packageJson = require("../package.json");
+const { _run_cli: run_cli } = require("..");
+
+run_cli({ program, packageJson, fs, path }).catch((error) => {
+    console.error(error);
+    process.exitCode = 1;
+});

node_modules/terser/bin/uglifyjs

@@ -0,0 +1,10 @@
+#!/usr/bin/env node
+// -*- js -*-
+/* eslint-env node */
+
+"use strict";
+
+process.stderr.write( "DEPRECATION WARNING: uglifyjs binary will soon be discontinued!\n");
+process.stderr.write("Please use \"terser\" instead.\n\n");
+
+require("./terser");

node_modules/terser/dist/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "dist",
+  "private": true,
+  "version": "1.0.0",
+  "main": "bundle.min.js",
+  "type": "commonjs",
+  "author": "",
+  "license": "BSD-2-Clause",
+  "description": "A package to hold the Terser dist bundle as commonjs while keeping the rest of it ESM. Nothing to see here."
+}

node_modules/terser/lib/cli.js

@@ -0,0 +1,482 @@
+import { minify, _default_options } from "../main.js";
+import { parse } from "./parse.js";
+import {
+    AST_Assign,
+    AST_Array,
+    AST_Constant,
+    AST_Node,
+    AST_PropAccess,
+    AST_RegExp,
+    AST_Sequence,
+    AST_Symbol,
+    AST_Token,
+    walk
+} from "./ast.js";
+import { OutputStream } from "./output.js";
+
+export async function run_cli({ program, packageJson, fs, path }) {
+    const skip_keys = new Set([ "cname", "parent_scope", "scope", "uses_eval", "uses_with" ]);
+    var files = {};
+    var options = {
+        compress: false,
+        mangle: false
+    };
+    const default_options = await _default_options();
+    program.version(packageJson.name + " " + packageJson.version);
+    program.parseArgv = program.parse;
+    program.parse = undefined;
+
+    if (process.argv.includes("ast")) program.helpInformation = describe_ast;
+    else if (process.argv.includes("options")) program.helpInformation = function() {
+        var text = [];
+        for (var option in default_options) {
+            text.push("--" + (option === "sourceMap" ? "source-map" : option) + " options:");
+            text.push(format_object(default_options[option]));
+            text.push("");
+        }
+        return text.join("\n");
+    };
+
+    program.option("-p, --parse <options>", "Specify parser options.", parse_js());
+    program.option("-c, --compress [options]", "Enable compressor/specify compressor options.", parse_js());
+    program.option("-m, --mangle [options]", "Mangle names/specify mangler options.", parse_js());
+    program.option("--mangle-props [options]", "Mangle properties/specify mangler options.", parse_js());
+    program.option("-f, --format [options]", "Format options.", parse_js());
+    program.option("-b, --beautify [options]", "Alias for --format.", parse_js());
+    program.option("-o, --output <file>", "Output file (default STDOUT).");
+    program.option("--comments [filter]", "Preserve copyright comments in the output.");
+    program.option("--config-file <file>", "Read minify() options from JSON file.");
+    program.option("-d, --define <expr>[=value]", "Global definitions.", parse_js("define"));
+    program.option("--ecma <version>", "Specify ECMAScript release: 5, 2015, 2016 or 2017...");
+    program.option("-e, --enclose [arg[,...][:value[,...]]]", "Embed output in a big function with configurable arguments and values.");
+    program.option("--ie8", "Support non-standard Internet Explorer 8.");
+    program.option("--keep-classnames", "Do not mangle/drop class names.");
+    program.option("--keep-fnames", "Do not mangle/drop function names. Useful for code relying on Function.prototype.name.");
+    program.option("--module", "Input is an ES6 module");
+    program.option("--name-cache <file>", "File to hold mangled name mappings.");
+    program.option("--rename", "Force symbol expansion.");
+    program.option("--no-rename", "Disable symbol expansion.");
+    program.option("--safari10", "Support non-standard Safari 10.");
+    program.option("--source-map [options]", "Enable source map/specify source map options.", parse_js());
+    program.option("--timings", "Display operations run time on STDERR.");
+    program.option("--toplevel", "Compress and/or mangle variables in toplevel scope.");
+    program.option("--wrap <name>", "Embed everything as a function with “exports” corresponding to “name” globally.");
+    program.arguments("[files...]").parseArgv(process.argv);
+    if (program.configFile) {
+        options = JSON.parse(read_file(program.configFile));
+    }
+    if (!program.output && program.sourceMap && program.sourceMap.url != "inline") {
+        fatal("ERROR: cannot write source map to STDOUT");
+    }
+
+    [
+        "compress",
+        "enclose",
+        "ie8",
+        "mangle",
+        "module",
+        "safari10",
+        "sourceMap",
+        "toplevel",
+        "wrap"
+    ].forEach(function(name) {
+        if (name in program) {
+            options[name] = program[name];
+        }
+    });
+
+    if ("ecma" in program) {
+        if (program.ecma != (program.ecma | 0)) fatal("ERROR: ecma must be an integer");
+        const ecma = program.ecma | 0;
+        if (ecma > 5 && ecma < 2015)
+            options.ecma = ecma + 2009;
+        else
+            options.ecma = ecma;
+    }
+    if (program.format || program.beautify) {
+        const chosenOption = program.format || program.beautify;
+        options.format = typeof chosenOption === "object" ? chosenOption : {};
+    }
+    if (program.comments) {
+        if (typeof options.format != "object") options.format = {};
+        options.format.comments = typeof program.comments == "string" ? (program.comments == "false" ? false : program.comments) : "some";
+    }
+    if (program.define) {
+        if (typeof options.compress != "object") options.compress = {};
+        if (typeof options.compress.global_defs != "object") options.compress.global_defs = {};
+        for (var expr in program.define) {
+            options.compress.global_defs[expr] = program.define[expr];
+        }
+    }
+    if (program.keepClassnames) {
+        options.keep_classnames = true;
+    }
+    if (program.keepFnames) {
+        options.keep_fnames = true;
+    }
+    if (program.mangleProps) {
+        if (program.mangleProps.domprops) {
+            delete program.mangleProps.domprops;
+        } else {
+            if (typeof program.mangleProps != "object") program.mangleProps = {};
+            if (!Array.isArray(program.mangleProps.reserved)) program.mangleProps.reserved = [];
+        }
+        if (typeof options.mangle != "object") options.mangle = {};
+        options.mangle.properties = program.mangleProps;
+    }
+    if (program.nameCache) {
+        options.nameCache = JSON.parse(read_file(program.nameCache, "{}"));
+    }
+    if (program.output == "ast") {
+        options.format = {
+            ast: true,
+            code: false
+        };
+    }
+    if (program.parse) {
+        if (!program.parse.acorn && !program.parse.spidermonkey) {
+            options.parse = program.parse;
+        } else if (program.sourceMap && program.sourceMap.content == "inline") {
+            fatal("ERROR: inline source map only works with built-in parser");
+        }
+    }
+    if (~program.rawArgs.indexOf("--rename")) {
+        options.rename = true;
+    } else if (!program.rename) {
+        options.rename = false;
+    }
+
+    let convert_path = name => name;
+    if (typeof program.sourceMap == "object" && "base" in program.sourceMap) {
+        convert_path = function() {
+            var base = program.sourceMap.base;
+            delete options.sourceMap.base;
+            return function(name) {
+                return path.relative(base, name);
+            };
+        }();
+    }
+
+    let filesList;
+    if (options.files && options.files.length) {
+        filesList = options.files;
+
+        delete options.files;
+    } else if (program.args.length) {
+        filesList = program.args;
+    }
+
+    if (filesList) {
+        simple_glob(filesList).forEach(function(name) {
+            files[convert_path(name)] = read_file(name);
+        });
+    } else {
+        await new Promise((resolve) => {
+            var chunks = [];
+            process.stdin.setEncoding("utf8");
+            process.stdin.on("data", function(chunk) {
+                chunks.push(chunk);
+            }).on("end", function() {
+                files = [ chunks.join("") ];
+                resolve();
+            });
+            process.stdin.resume();
+        });
+    }
+
+    await run_cli();
+
+    function convert_ast(fn) {
+        return AST_Node.from_mozilla_ast(Object.keys(files).reduce(fn, null));
+    }
+
+    async function run_cli() {
+        var content = program.sourceMap && program.sourceMap.content;
+        if (content && content !== "inline") {
+            options.sourceMap.content = read_file(content, content);
+        }
+        if (program.timings) options.timings = true;
+
+        try {
+            if (program.parse) {
+                if (program.parse.acorn) {
+                    files = convert_ast(function(toplevel, name) {
+                        return require("acorn").parse(files[name], {
+                            ecmaVersion: 2024,
+                            locations: true,
+                            program: toplevel,
+                            sourceFile: name,
+                            sourceType: options.module || program.parse.module ? "module" : "script"
+                        });
+                    });
+                } else if (program.parse.spidermonkey) {
+                    files = convert_ast(function(toplevel, name) {
+                        var obj = JSON.parse(files[name]);
+                        if (!toplevel) return obj;
+                        toplevel.body = toplevel.body.concat(obj.body);
+                        return toplevel;
+                    });
+                }
+            }
+        } catch (ex) {
+            fatal(ex);
+        }
+
+        let result;
+        try {
+            result = await minify(files, options, fs);
+        } catch (ex) {
+            if (ex.name == "SyntaxError") {
+                print_error("Parse error at " + ex.filename + ":" + ex.line + "," + ex.col);
+                var col = ex.col;
+                var lines = files[ex.filename].split(/\r?\n/);
+                var line = lines[ex.line - 1];
+                if (!line && !col) {
+                    line = lines[ex.line - 2];
+                    col = line.length;
+                }
+                if (line) {
+                    var limit = 70;
+                    if (col > limit) {
+                        line = line.slice(col - limit);
+                        col = limit;
+                    }
+                    print_error(line.slice(0, 80));
+                    print_error(line.slice(0, col).replace(/\S/g, " ") + "^");
+                }
+            }
+            if (ex.defs) {
+                print_error("Supported options:");
+                print_error(format_object(ex.defs));
+            }
+            fatal(ex);
+            return;
+        }
+
+        if (program.output == "ast") {
+            if (!options.compress && !options.mangle) {
+                result.ast.figure_out_scope({});
+            }
+            console.log(JSON.stringify(result.ast, function(key, value) {
+                if (value) switch (key) {
+                  case "thedef":
+                    return symdef(value);
+                  case "enclosed":
+                    return value.length ? value.map(symdef) : undefined;
+                  case "variables":
+                  case "globals":
+                    return value.size ? collect_from_map(value, symdef) : undefined;
+                }
+                if (skip_keys.has(key)) return;
+                if (value instanceof AST_Token) return;
+                if (value instanceof Map) return;
+                if (value instanceof AST_Node) {
+                    var result = {
+                        _class: "AST_" + value.TYPE
+                    };
+                    if (value.block_scope) {
+                        result.variables = value.block_scope.variables;
+                        result.enclosed = value.block_scope.enclosed;
+                    }
+                    value.CTOR.PROPS.forEach(function(prop) {
+                        if (prop !== "block_scope") {
+                            result[prop] = value[prop];
+                        }
+                    });
+                    return result;
+                }
+                return value;
+            }, 2));
+        } else if (program.output == "spidermonkey") {
+            try {
+                const minified = await minify(
+                    result.code,
+                    {
+                        compress: false,
+                        mangle: false,
+                        format: {
+                            ast: true,
+                            code: false
+                        }
+                    },
+                    fs
+                );
+                console.log(JSON.stringify(minified.ast.to_mozilla_ast(), null, 2));
+            } catch (ex) {
+                fatal(ex);
+                return;
+            }
+        } else if (program.output) {
+            fs.mkdirSync(path.dirname(program.output), { recursive: true });
+            fs.writeFileSync(program.output, result.code);
+            if (options.sourceMap && options.sourceMap.url !== "inline" && result.map) {
+                fs.writeFileSync(program.output + ".map", result.map);
+            }
+        } else {
+            console.log(result.code);
+        }
+        if (program.nameCache) {
+            fs.writeFileSync(program.nameCache, JSON.stringify(options.nameCache));
+        }
+        if (result.timings) for (var phase in result.timings) {
+            print_error("- " + phase + ": " + result.timings[phase].toFixed(3) + "s");
+        }
+    }
+
+    function fatal(message) {
+        if (message instanceof Error) message = message.stack.replace(/^\S*?Error:/, "ERROR:");
+        print_error(message);
+        process.exit(1);
+    }
+
+    // A file glob function that only supports "*" and "?" wildcards in the basename.
+    // Example: "foo/bar/*baz??.*.js"
+    // Argument `glob` may be a string or an array of strings.
+    // Returns an array of strings. Garbage in, garbage out.
+    function simple_glob(glob) {
+        if (Array.isArray(glob)) {
+            return [].concat.apply([], glob.map(simple_glob));
+        }
+        if (glob && glob.match(/[*?]/)) {
+            var dir = path.dirname(glob);
+            try {
+                var entries = fs.readdirSync(dir);
+            } catch (ex) {}
+            if (entries) {
+                var pattern = "^" + path.basename(glob)
+                    .replace(/[.+^$[\]\\(){}]/g, "\\$&")
+                    .replace(/\*/g, "[^/\\\\]*")
+                    .replace(/\?/g, "[^/\\\\]") + "$";
+                var mod = process.platform === "win32" ? "i" : "";
+                var rx = new RegExp(pattern, mod);
+                var results = entries.filter(function(name) {
+                    return rx.test(name);
+                }).map(function(name) {
+                    return path.join(dir, name);
+                });
+                if (results.length) return results;
+            }
+        }
+        return [ glob ];
+    }
+
+    function read_file(path, default_value) {
+        try {
+            return fs.readFileSync(path, "utf8");
+        } catch (ex) {
+            if ((ex.code == "ENOENT" || ex.code == "ENAMETOOLONG") && default_value != null) return default_value;
+            fatal(ex);
+        }
+    }
+
+    function parse_js(flag) {
+        return function(value, options) {
+            options = options || {};
+            try {
+                walk(parse(value, { expression: true }), node => {
+                    if (node instanceof AST_Assign) {
+                        var name = node.left.print_to_string();
+                        var value = node.right;
+                        if (flag) {
+                            options[name] = value;
+                        } else if (value instanceof AST_Array) {
+                            options[name] = value.elements.map(to_string);
+                        } else if (value instanceof AST_RegExp) {
+                            value = value.value;
+                            options[name] = new RegExp(value.source, value.flags);
+                        } else {
+                            options[name] = to_string(value);
+                        }
+                        return true;
+                    }
+                    if (node instanceof AST_Symbol || node instanceof AST_PropAccess) {
+                        var name = node.print_to_string();
+                        options[name] = true;
+                        return true;
+                    }
+                    if (!(node instanceof AST_Sequence)) throw node;
+
+                    function to_string(value) {
+                        return value instanceof AST_Constant ? value.getValue() : value.print_to_string({
+                            quote_keys: true
+                        });
+                    }
+                });
+            } catch(ex) {
+                if (flag) {
+                    fatal("Error parsing arguments for '" + flag + "': " + value);
+                } else {
+                    options[value] = null;
+                }
+            }
+            return options;
+        };
+    }
+
+    function symdef(def) {
+        var ret = (1e6 + def.id) + " " + def.name;
+        if (def.mangled_name) ret += " " + def.mangled_name;
+        return ret;
+    }
+
+    function collect_from_map(map, callback) {
+        var result = [];
+        map.forEach(function (def) {
+            result.push(callback(def));
+        });
+        return result;
+    }
+
+    function format_object(obj) {
+        var lines = [];
+        var padding = "";
+        Object.keys(obj).map(function(name) {
+            if (padding.length < name.length) padding = Array(name.length + 1).join(" ");
+            return [ name, JSON.stringify(obj[name]) ];
+        }).forEach(function(tokens) {
+            lines.push("  " + tokens[0] + padding.slice(tokens[0].length - 2) + tokens[1]);
+        });
+        return lines.join("\n");
+    }
+
+    function print_error(msg) {
+        process.stderr.write(msg);
+        process.stderr.write("\n");
+    }
+
+    function describe_ast() {
+        var out = OutputStream({ beautify: true });
+        function doitem(ctor) {
+            out.print("AST_" + ctor.TYPE);
+            const props = ctor.SELF_PROPS.filter(prop => !/^\$/.test(prop));
+
+            if (props.length > 0) {
+                out.space();
+                out.with_parens(function() {
+                    props.forEach(function(prop, i) {
+                        if (i) out.space();
+                        out.print(prop);
+                    });
+                });
+            }
+
+            if (ctor.documentation) {
+                out.space();
+                out.print_string(ctor.documentation);
+            }
+
+            if (ctor.SUBCLASSES.length > 0) {
+                out.space();
+                out.with_block(function() {
+                    ctor.SUBCLASSES.forEach(function(ctor) {
+                        out.indent();
+                        doitem(ctor);
+                        out.newline();
+                    });
+                });
+            }
+        }
+        doitem(AST_Node);
+        return out + "\n";
+    }
+}

node_modules/terser/lib/compress/common.js

@@ -0,0 +1,375 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+import {
+    AST_Array,
+    AST_Arrow,
+    AST_BigInt,
+    AST_BlockStatement,
+    AST_Call,
+    AST_Chain,
+    AST_Class,
+    AST_Const,
+    AST_Constant,
+    AST_DefClass,
+    AST_Defun,
+    AST_EmptyStatement,
+    AST_Export,
+    AST_False,
+    AST_Function,
+    AST_Import,
+    AST_Infinity,
+    AST_LabeledStatement,
+    AST_Lambda,
+    AST_Let,
+    AST_LoopControl,
+    AST_NaN,
+    AST_Node,
+    AST_Null,
+    AST_Number,
+    AST_Object,
+    AST_ObjectKeyVal,
+    AST_PropAccess,
+    AST_RegExp,
+    AST_Scope,
+    AST_Sequence,
+    AST_SimpleStatement,
+    AST_Statement,
+    AST_String,
+    AST_SymbolRef,
+    AST_True,
+    AST_UnaryPrefix,
+    AST_Undefined,
+    AST_Using,
+
+    TreeWalker,
+    walk,
+    walk_abort,
+    walk_parent,
+} from "../ast.js";
+import { make_node, regexp_source_fix, string_template, makePredicate } from "../utils/index.js";
+import { first_in_statement } from "../utils/first_in_statement.js";
+import { has_flag, TOP } from "./compressor-flags.js";
+
+export function merge_sequence(array, node) {
+    if (node instanceof AST_Sequence) {
+        array.push(...node.expressions);
+    } else {
+        array.push(node);
+    }
+    return array;
+}
+
+export function make_sequence(orig, expressions) {
+    if (expressions.length == 1) return expressions[0];
+    if (expressions.length == 0) throw new Error("trying to create a sequence with length zero!");
+    return make_node(AST_Sequence, orig, {
+        expressions: expressions.reduce(merge_sequence, [])
+    });
+}
+
+export function make_empty_function(self) {
+    return make_node(AST_Function, self, {
+        uses_arguments: false,
+        argnames: [],
+        body: [],
+        is_generator: false,
+        async: false,
+        variables: new Map(),
+        uses_with: false,
+        uses_eval: false,
+        parent_scope: null,
+        enclosed: [],
+        cname: 0,
+        block_scope: undefined,
+    });
+}
+
+export function make_node_from_constant(val, orig) {
+    switch (typeof val) {
+      case "string":
+        return make_node(AST_String, orig, {
+            value: val
+        });
+      case "number":
+        if (isNaN(val)) return make_node(AST_NaN, orig);
+        if (isFinite(val)) {
+            return 1 / val < 0 ? make_node(AST_UnaryPrefix, orig, {
+                operator: "-",
+                expression: make_node(AST_Number, orig, { value: -val })
+            }) : make_node(AST_Number, orig, { value: val });
+        }
+        return val < 0 ? make_node(AST_UnaryPrefix, orig, {
+            operator: "-",
+            expression: make_node(AST_Infinity, orig)
+        }) : make_node(AST_Infinity, orig);
+      case "bigint":
+        return make_node(AST_BigInt, orig, { value: val.toString() });
+      case "boolean":
+        return make_node(val ? AST_True : AST_False, orig);
+      case "undefined":
+        return make_node(AST_Undefined, orig);
+      default:
+        if (val === null) {
+            return make_node(AST_Null, orig, { value: null });
+        }
+        if (val instanceof RegExp) {
+            return make_node(AST_RegExp, orig, {
+                value: {
+                    source: regexp_source_fix(val.source),
+                    flags: val.flags
+                }
+            });
+        }
+        throw new Error(string_template("Can't handle constant of type: {type}", {
+            type: typeof val
+        }));
+    }
+}
+
+export function best_of_expression(ast1, ast2) {
+    return ast1.size() > ast2.size() ? ast2 : ast1;
+}
+
+export function best_of_statement(ast1, ast2) {
+    return best_of_expression(
+        make_node(AST_SimpleStatement, ast1, {
+            body: ast1
+        }),
+        make_node(AST_SimpleStatement, ast2, {
+            body: ast2
+        })
+    ).body;
+}
+
+/** Find which node is smaller, and return that */
+export function best_of(compressor, ast1, ast2) {
+    if (first_in_statement(compressor)) {
+        return best_of_statement(ast1, ast2);
+    } else {
+        return best_of_expression(ast1, ast2);
+    }
+}
+
+/** Simplify an object property's key, if possible */
+export function get_simple_key(key) {
+    if (key instanceof AST_Constant) {
+        return key.getValue();
+    }
+    if (key instanceof AST_UnaryPrefix
+        && key.operator == "void"
+        && key.expression instanceof AST_Constant) {
+        return undefined;
+    }
+    return key;
+}
+
+export function read_property(obj, key) {
+    key = get_simple_key(key);
+    if (key instanceof AST_Node) return;
+
+    var value;
+    if (obj instanceof AST_Array) {
+        var elements = obj.elements;
+        if (key == "length") return make_node_from_constant(elements.length, obj);
+        if (typeof key == "number" && key in elements) value = elements[key];
+    } else if (obj instanceof AST_Object) {
+        key = "" + key;
+        var props = obj.properties;
+        for (var i = props.length; --i >= 0;) {
+            var prop = props[i];
+            if (!(prop instanceof AST_ObjectKeyVal)) return;
+            if (!value && props[i].key === key) value = props[i].value;
+        }
+    }
+
+    return value instanceof AST_SymbolRef && value.fixed_value() || value;
+}
+
+export function has_break_or_continue(loop, parent) {
+    var found = false;
+    var tw = new TreeWalker(function(node) {
+        if (found || node instanceof AST_Scope) return true;
+        if (node instanceof AST_LoopControl && tw.loopcontrol_target(node) === loop) {
+            return found = true;
+        }
+    });
+    if (parent instanceof AST_LabeledStatement) tw.push(parent);
+    tw.push(loop);
+    loop.body.walk(tw);
+    return found;
+}
+
+// we shouldn't compress (1,func)(something) to
+// func(something) because that changes the meaning of
+// the func (becomes lexical instead of global).
+export function maintain_this_binding(parent, orig, val) {
+    if (requires_sequence_to_maintain_binding(parent, orig, val)) {
+        const zero = make_node(AST_Number, orig, { value: 0 });
+        return make_sequence(orig, [ zero, val ]);
+    } else {
+        return val;
+    }
+}
+
+/** Detect (1, x.noThis)(), (0, eval)(), which need sequences */
+export function requires_sequence_to_maintain_binding(parent, orig, val) {
+    return (
+        parent instanceof AST_UnaryPrefix && parent.operator == "delete"
+        || parent instanceof AST_Call && parent.expression === orig
+            && (
+                val instanceof AST_Chain
+                || val instanceof AST_PropAccess
+                || val instanceof AST_SymbolRef && val.name == "eval"
+            )
+    );
+}
+
+export function is_func_expr(node) {
+    return node instanceof AST_Arrow || node instanceof AST_Function;
+}
+
+/**
+ * Used to determine whether the node can benefit from negation.
+ * Not the case with arrow functions (you need an extra set of parens). */
+export function is_iife_call(node) {
+    if (node.TYPE != "Call") return false;
+    return node.expression instanceof AST_Function || is_iife_call(node.expression);
+}
+
+export function is_empty(thing) {
+    if (thing === null) return true;
+    if (thing instanceof AST_EmptyStatement) return true;
+    if (thing instanceof AST_BlockStatement) return thing.body.length == 0;
+    return false;
+}
+
+export const identifier_atom = makePredicate("Infinity NaN undefined");
+export function is_identifier_atom(node) {
+    return node instanceof AST_Infinity
+        || node instanceof AST_NaN
+        || node instanceof AST_Undefined;
+}
+
+/** Check if this is a SymbolRef node which has one def of a certain AST type */
+export function is_ref_of(ref, type) {
+    if (!(ref instanceof AST_SymbolRef)) return false;
+    var orig = ref.definition().orig;
+    for (var i = orig.length; --i >= 0;) {
+        if (orig[i] instanceof type) return true;
+    }
+}
+
+/**Can we turn { block contents... } into just the block contents ?
+ * Not if one of these is inside.
+ **/
+export function can_be_evicted_from_block(node) {
+    return !(
+        node instanceof AST_DefClass ||
+        node instanceof AST_Defun ||
+        node instanceof AST_Let ||
+        node instanceof AST_Const ||
+        node instanceof AST_Using ||
+        node instanceof AST_Export ||
+        node instanceof AST_Import
+    );
+}
+
+export function as_statement_array(thing) {
+    if (thing === null) return [];
+    if (thing instanceof AST_BlockStatement) return thing.body;
+    if (thing instanceof AST_EmptyStatement) return [];
+    if (thing instanceof AST_Statement) return [ thing ];
+    throw new Error("Can't convert thing to statement array");
+}
+
+export function is_reachable(scope_node, defs) {
+    const find_ref = node => {
+        if (node instanceof AST_SymbolRef && defs.includes(node.definition())) {
+            return walk_abort;
+        }
+    };
+
+    return walk_parent(scope_node, (node, info) => {
+        if (node instanceof AST_Scope && node !== scope_node) {
+            var parent = info.parent();
+
+            if (
+                parent instanceof AST_Call
+                && parent.expression === node
+                // Async/Generators aren't guaranteed to sync evaluate all of
+                // their body steps, so it's possible they close over the variable.
+                && !(node.async || node.is_generator)
+            ) {
+                return;
+            }
+
+            if (walk(node, find_ref)) return walk_abort;
+
+            return true;
+        }
+    });
+}
+
+/** Check if a ref refers to the name of a function/class it's defined within */
+export function is_recursive_ref(tw, def) {
+    var node;
+    for (var i = 0; node = tw.parent(i); i++) {
+        if (node instanceof AST_Lambda || node instanceof AST_Class) {
+            var name = node.name;
+            if (name && name.definition() === def) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+// TODO this only works with AST_Defun, shouldn't it work for other ways of defining functions?
+export function retain_top_func(fn, compressor) {
+    return compressor.top_retain
+        && fn instanceof AST_Defun
+        && has_flag(fn, TOP)
+        && fn.name
+        && compressor.top_retain(fn.name.definition());
+}

node_modules/terser/lib/compress/compressor-flags.js

@@ -0,0 +1,62 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+// bitfield flags to be stored in node.flags.
+// These are set and unset during compression, and store information in the node without requiring multiple fields.
+export const UNUSED = 0b00000001;
+export const TRUTHY = 0b00000010;
+export const FALSY = 0b00000100;
+export const UNDEFINED = 0b00001000;
+export const INLINED = 0b00010000;
+// Nodes to which values are ever written. Used when keep_assign is part of the unused option string.
+export const WRITE_ONLY = 0b00100000;
+
+// information specific to a single compression pass
+export const SQUEEZED = 0b0000000100000000;
+export const OPTIMIZED = 0b0000001000000000;
+export const TOP = 0b0000010000000000;
+export const CLEAR_BETWEEN_PASSES = SQUEEZED | OPTIMIZED | TOP;
+
+export const has_flag = (node, flag) => node.flags & flag;
+export const set_flag = (node, flag) => { node.flags |= flag; };
+export const clear_flag = (node, flag) => { node.flags &= ~flag; };

node_modules/terser/lib/compress/drop-side-effect-free.js

@@ -0,0 +1,387 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+import {
+    AST_Accessor,
+    AST_Array,
+    AST_Arrow,
+    AST_Assign,
+    AST_Binary,
+    AST_Call,
+    AST_Chain,
+    AST_Class,
+    AST_ClassPrivateProperty,
+    AST_ClassProperty,
+    AST_ClassStaticBlock,
+    AST_ConciseMethod,
+    AST_Conditional,
+    AST_Constant,
+    AST_DefClass,
+    AST_Dot,
+    AST_Expansion,
+    AST_Function,
+    AST_Node,
+    AST_Number,
+    AST_Object,
+    AST_ObjectGetter,
+    AST_ObjectKeyVal,
+    AST_ObjectSetter,
+    AST_PrivateGetter,
+    AST_PrivateSetter,
+    AST_PrivateMethod,
+    AST_PropAccess,
+    AST_Scope,
+    AST_Sequence,
+    AST_SimpleStatement,
+    AST_Sub,
+    AST_SymbolRef,
+    AST_TemplateSegment,
+    AST_TemplateString,
+    AST_This,
+    AST_Unary,
+} from "../ast.js";
+import { make_node, return_null, return_this } from "../utils/index.js";
+import { first_in_statement } from "../utils/first_in_statement.js";
+
+import { pure_prop_access_globals } from "./native-objects.js";
+import { lazy_op, unary_side_effects, is_nullish_shortcircuited } from "./inference.js";
+import { WRITE_ONLY, set_flag, clear_flag } from "./compressor-flags.js";
+import { make_sequence, is_func_expr, is_iife_call } from "./common.js";
+
+// AST_Node#drop_side_effect_free() gets called when we don't care about the value,
+// only about side effects. We'll be defining this method for each node type in this module
+//
+// Examples:
+// foo++ -> foo++
+// 1 + func() -> func()
+// 10 -> (nothing)
+// knownPureFunc(foo++) -> foo++
+
+function def_drop_side_effect_free(node_or_nodes, func) {
+    for (const node of [].concat(node_or_nodes)) {
+        node.DEFMETHOD("drop_side_effect_free", func);
+    }
+}
+
+// Drop side-effect-free elements from an array of expressions.
+// Returns an array of expressions with side-effects or null
+// if all elements were dropped. Note: original array may be
+// returned if nothing changed.
+function trim(nodes, compressor, first_in_statement) {
+    var len = nodes.length;
+    if (!len)  return null;
+
+    var ret = [], changed = false;
+    for (var i = 0; i < len; i++) {
+        var node = nodes[i].drop_side_effect_free(compressor, first_in_statement);
+        changed |= node !== nodes[i];
+        if (node) {
+            ret.push(node);
+            first_in_statement = false;
+        }
+    }
+    return changed ? ret.length ? ret : null : nodes;
+}
+
+def_drop_side_effect_free(AST_Node, return_this);
+def_drop_side_effect_free(AST_Constant, return_null);
+def_drop_side_effect_free(AST_This, return_null);
+
+def_drop_side_effect_free(AST_Call, function (compressor, first_in_statement) {
+    if (is_nullish_shortcircuited(this, compressor)) {
+        return this.expression.drop_side_effect_free(compressor, first_in_statement);
+    }
+
+    if (!this.is_callee_pure(compressor)) {
+        if (this.expression.is_call_pure(compressor)) {
+            var exprs = this.args.slice();
+            exprs.unshift(this.expression.expression);
+            exprs = trim(exprs, compressor, first_in_statement);
+            return exprs && make_sequence(this, exprs);
+        }
+        if (is_func_expr(this.expression)
+            && (!this.expression.name || !this.expression.name.definition().references.length)) {
+            var node = this.clone();
+            node.expression.process_expression(false, compressor);
+            return node;
+        }
+        return this;
+    }
+
+    var args = trim(this.args, compressor, first_in_statement);
+    return args && make_sequence(this, args);
+});
+
+def_drop_side_effect_free(AST_Accessor, return_null);
+
+def_drop_side_effect_free(AST_Function, return_null);
+
+def_drop_side_effect_free(AST_Arrow, return_null);
+
+def_drop_side_effect_free(AST_Class, function (compressor) {
+    const with_effects = [];
+
+    if (this.is_self_referential() && this.has_side_effects(compressor)) {
+        return this;
+    }
+
+    const trimmed_extends = this.extends && this.extends.drop_side_effect_free(compressor);
+    if (trimmed_extends) with_effects.push(trimmed_extends);
+
+    for (const prop of this.properties) {
+        if (prop instanceof AST_ClassStaticBlock) {
+            if (prop.has_side_effects(compressor)) {
+                return this; // Be cautious about these
+            }
+        } else {
+            const trimmed_prop = prop.drop_side_effect_free(compressor);
+            if (trimmed_prop) with_effects.push(trimmed_prop);
+        }
+    }
+
+    if (!with_effects.length)
+        return null;
+
+    const exprs = make_sequence(this, with_effects);
+    if (this instanceof AST_DefClass) {
+        // We want a statement
+        return make_node(AST_SimpleStatement, this, { body: exprs });
+    } else {
+        return exprs;
+    }
+});
+
+def_drop_side_effect_free([
+    AST_ClassProperty,
+    AST_ClassPrivateProperty,
+], function (compressor) {
+    const key = this.computed_key() && this.key.drop_side_effect_free(compressor);
+
+    const value = this.static && this.value
+        && this.value.drop_side_effect_free(compressor);
+
+    if (key && value)
+        return make_sequence(this, [key, value]);
+    return key || value || null;
+});
+
+def_drop_side_effect_free(AST_Binary, function (compressor, first_in_statement) {
+    var right = this.right.drop_side_effect_free(compressor);
+    if (!right)
+        return this.left.drop_side_effect_free(compressor, first_in_statement);
+    if (lazy_op.has(this.operator)) {
+        if (right === this.right)
+            return this;
+        var node = this.clone();
+        node.right = right;
+        return node;
+    } else {
+        var left = this.left.drop_side_effect_free(compressor, first_in_statement);
+        if (!left)
+            return this.right.drop_side_effect_free(compressor, first_in_statement);
+        return make_sequence(this, [left, right]);
+    }
+});
+
+def_drop_side_effect_free(AST_Assign, function (compressor) {
+    if (this.logical)
+        return this;
+
+    var left = this.left;
+    if (left.has_side_effects(compressor)
+        || compressor.has_directive("use strict")
+        && left instanceof AST_PropAccess
+        && left.expression.is_constant()) {
+        return this;
+    }
+    set_flag(this, WRITE_ONLY);
+    while (left instanceof AST_PropAccess) {
+        left = left.expression;
+    }
+    if (left.is_constant_expression(compressor.find_parent(AST_Scope))) {
+        return this.right.drop_side_effect_free(compressor);
+    }
+    return this;
+});
+
+def_drop_side_effect_free(AST_Conditional, function (compressor) {
+    var consequent = this.consequent.drop_side_effect_free(compressor);
+    var alternative = this.alternative.drop_side_effect_free(compressor);
+    if (consequent === this.consequent && alternative === this.alternative)
+        return this;
+    if (!consequent)
+        return alternative ? make_node(AST_Binary, this, {
+            operator: "||",
+            left: this.condition,
+            right: alternative
+        }) : this.condition.drop_side_effect_free(compressor);
+    if (!alternative)
+        return make_node(AST_Binary, this, {
+            operator: "&&",
+            left: this.condition,
+            right: consequent
+        });
+    var node = this.clone();
+    node.consequent = consequent;
+    node.alternative = alternative;
+    return node;
+});
+
+def_drop_side_effect_free(AST_Unary, function (compressor, first_in_statement) {
+    if (unary_side_effects.has(this.operator)) {
+        if (!this.expression.has_side_effects(compressor)) {
+            set_flag(this, WRITE_ONLY);
+        } else {
+            clear_flag(this, WRITE_ONLY);
+        }
+        return this;
+    }
+    if (this.operator == "typeof" && this.expression instanceof AST_SymbolRef)
+        return null;
+    var expression = this.expression.drop_side_effect_free(compressor, first_in_statement);
+    if (first_in_statement && expression && is_iife_call(expression)) {
+        if (expression === this.expression && this.operator == "!")
+            return this;
+        return expression.negate(compressor, first_in_statement);
+    }
+    return expression;
+});
+
+def_drop_side_effect_free(AST_SymbolRef, function (compressor) {
+    const safe_access = this.is_declared(compressor)
+        || pure_prop_access_globals.has(this.name);
+    return safe_access ? null : this;
+});
+
+def_drop_side_effect_free(AST_Object, function (compressor, first_in_statement) {
+    var values = trim(this.properties, compressor, first_in_statement);
+    return values && make_sequence(this, values);
+});
+
+def_drop_side_effect_free(AST_ObjectKeyVal, function (compressor, first_in_statement) {
+    const computed_key = this.key instanceof AST_Node;
+    const key = computed_key && this.key.drop_side_effect_free(compressor, first_in_statement);
+    const value = this.value.drop_side_effect_free(compressor, first_in_statement);
+    if (key && value) {
+        return make_sequence(this, [key, value]);
+    }
+    return key || value;
+});
+
+def_drop_side_effect_free([
+    AST_ConciseMethod,
+    AST_ObjectGetter,
+    AST_ObjectSetter,
+], function () {
+    return this.computed_key() ? this.key : null;
+});
+
+def_drop_side_effect_free([
+    AST_PrivateMethod,
+    AST_PrivateGetter,
+    AST_PrivateSetter,
+], function () {
+    return null;
+});
+
+def_drop_side_effect_free(AST_Array, function (compressor, first_in_statement) {
+    var values = trim(this.elements, compressor, first_in_statement);
+    return values && make_sequence(this, values);
+});
+
+def_drop_side_effect_free(AST_Dot, function (compressor, first_in_statement) {
+    if (is_nullish_shortcircuited(this, compressor)) {
+        return this.expression.drop_side_effect_free(compressor, first_in_statement);
+    }
+    if (!this.optional && this.expression.may_throw_on_access(compressor)) {
+        return this;
+    }
+
+    return this.expression.drop_side_effect_free(compressor, first_in_statement);
+});
+
+def_drop_side_effect_free(AST_Sub, function (compressor, first_in_statement) {
+    if (is_nullish_shortcircuited(this, compressor)) {
+        return this.expression.drop_side_effect_free(compressor, first_in_statement);
+    }
+    if (!this.optional && this.expression.may_throw_on_access(compressor)) {
+        return this;
+    }
+
+    var property = this.property.drop_side_effect_free(compressor);
+    if (property && this.optional) return this;
+
+    var expression = this.expression.drop_side_effect_free(compressor, first_in_statement);
+
+    if (expression && property) return make_sequence(this, [expression, property]);
+    return expression || property;
+});
+
+def_drop_side_effect_free(AST_Chain, function (compressor, first_in_statement) {
+    return this.expression.drop_side_effect_free(compressor, first_in_statement);
+});
+
+def_drop_side_effect_free(AST_Sequence, function (compressor) {
+    var last = this.tail_node();
+    var expr = last.drop_side_effect_free(compressor);
+    if (expr === last)
+        return this;
+    var expressions = this.expressions.slice(0, -1);
+    if (expr)
+        expressions.push(expr);
+    if (!expressions.length) {
+        return make_node(AST_Number, this, { value: 0 });
+    }
+    return make_sequence(this, expressions);
+});
+
+def_drop_side_effect_free(AST_Expansion, function (compressor, first_in_statement) {
+    return this.expression.drop_side_effect_free(compressor, first_in_statement);
+});
+
+def_drop_side_effect_free(AST_TemplateSegment, return_null);
+
+def_drop_side_effect_free(AST_TemplateString, function (compressor) {
+    var values = trim(this.segments, compressor, first_in_statement);
+    return values && make_sequence(this, values);
+});

node_modules/terser/lib/compress/drop-unused.js

@@ -0,0 +1,505 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+import {
+    AST_Accessor,
+    AST_Assign,
+    AST_BlockStatement,
+    AST_Call,
+    AST_Class,
+    AST_ClassExpression,
+    AST_ClassStaticBlock,
+    AST_DefaultAssign,
+    AST_DefClass,
+    AST_Definitions,
+    AST_Defun,
+    AST_Destructuring,
+    AST_EmptyStatement,
+    AST_Expansion,
+    AST_Export,
+    AST_For,
+    AST_ForIn,
+    AST_Function,
+    AST_LabeledStatement,
+    AST_Lambda,
+    AST_Number,
+    AST_Scope,
+    AST_Sequence,
+    AST_SimpleStatement,
+    AST_SymbolBlockDeclaration,
+    AST_SymbolCatch,
+    AST_SymbolDeclaration,
+    AST_SymbolFunarg,
+    AST_SymbolRef,
+    AST_SymbolVar,
+    AST_Toplevel,
+    AST_Unary,
+    AST_Var,
+
+    TreeTransformer,
+    TreeWalker,
+    walk,
+} from "../ast.js";
+import {
+    keep_name,
+    make_node,
+    map_add,
+    MAP,
+    remove,
+    return_false,
+} from "../utils/index.js";
+import { SymbolDef } from "../scope.js";
+
+import {
+    WRITE_ONLY,
+    UNUSED,
+
+    has_flag,
+    set_flag,
+} from "./compressor-flags.js";
+import {
+    make_sequence,
+    maintain_this_binding,
+    is_empty,
+    is_ref_of,
+    can_be_evicted_from_block,
+} from "./common.js";
+import { is_used_in_expression } from "./inference.js";
+
+const r_keep_assign = /keep_assign/;
+
+/** Drop unused variables from this scope */
+AST_Scope.DEFMETHOD("drop_unused", function(compressor) {
+    if (!compressor.option("unused")) return;
+    if (compressor.has_directive("use asm")) return;
+    if (!this.variables) return; // not really a scope (eg: AST_Class)
+
+    var self = this;
+    if (self.pinned()) return;
+    var drop_funcs = !(self instanceof AST_Toplevel) || compressor.toplevel.funcs;
+    var drop_vars = !(self instanceof AST_Toplevel) || compressor.toplevel.vars;
+    const assign_as_unused = r_keep_assign.test(compressor.option("unused")) ? return_false : function(node) {
+        if (node instanceof AST_Assign
+            && !node.logical
+            && (has_flag(node, WRITE_ONLY) || node.operator == "=")
+        ) {
+            return node.left;
+        }
+        if (node instanceof AST_Unary && has_flag(node, WRITE_ONLY)) {
+            return node.expression;
+        }
+    };
+    var in_use_ids = new Map();
+    var fixed_ids = new Map();
+    if (self instanceof AST_Toplevel && compressor.top_retain) {
+        self.variables.forEach(function(def) {
+            if (compressor.top_retain(def)) {
+                in_use_ids.set(def.id, def);
+            }
+        });
+    }
+    var var_defs_by_id = new Map();
+    var initializations = new Map();
+
+    // pass 1: find out which symbols are directly used in
+    // this scope (not in nested scopes).
+    var scope = this;
+    var tw = new TreeWalker(function(node, descend) {
+        if (node instanceof AST_Lambda && node.uses_arguments && !tw.has_directive("use strict")) {
+            node.argnames.forEach(function(argname) {
+                if (!(argname instanceof AST_SymbolDeclaration)) return;
+                var def = argname.definition();
+                in_use_ids.set(def.id, def);
+            });
+        }
+        if (node === self) return;
+        if (node instanceof AST_Class && node.has_side_effects(compressor)) {
+            if (node.is_self_referential()) {
+                descend();
+            } else {
+                node.visit_nondeferred_class_parts(tw);
+            }
+        }
+        if (node instanceof AST_Defun || node instanceof AST_DefClass) {
+            var node_def = node.name.definition();
+            const in_export = tw.parent() instanceof AST_Export;
+            if (in_export || !drop_funcs && scope === self) {
+                if (node_def.global) {
+                    in_use_ids.set(node_def.id, node_def);
+                }
+            }
+
+            map_add(initializations, node_def.id, node);
+            return true; // don't go in nested scopes
+        }
+        // In the root scope, we drop things. In inner scopes, we just check for uses.
+        const in_root_scope = scope === self;
+        if (node instanceof AST_SymbolFunarg && in_root_scope) {
+            map_add(var_defs_by_id, node.definition().id, node);
+        }
+        if (node instanceof AST_Definitions && in_root_scope) {
+            const in_export = tw.parent() instanceof AST_Export;
+            node.definitions.forEach(function(def) {
+                if (def.name instanceof AST_SymbolVar) {
+                    map_add(var_defs_by_id, def.name.definition().id, def);
+                }
+                if (in_export || !drop_vars) {
+                    walk(def.name, node => {
+                        if (node instanceof AST_SymbolDeclaration) {
+                            const def = node.definition();
+                            if (def.global) {
+                                in_use_ids.set(def.id, def);
+                            }
+                        }
+                    });
+                }
+                if (def.name instanceof AST_Destructuring) {
+                    def.walk(tw);
+                }
+                if (def.name instanceof AST_SymbolDeclaration && def.value) {
+                    var node_def = def.name.definition();
+                    map_add(initializations, node_def.id, def.value);
+                    if (!node_def.chained && def.name.fixed_value() === def.value) {
+                        fixed_ids.set(node_def.id, def);
+                    }
+                    if (def.value.has_side_effects(compressor)) {
+                        def.value.walk(tw);
+                    }
+                }
+            });
+            return true;
+        }
+        return scan_ref_scoped(node, descend);
+    });
+    self.walk(tw);
+    // pass 2: for every used symbol we need to walk its
+    // initialization code to figure out if it uses other
+    // symbols (that may not be in_use).
+    tw = new TreeWalker(scan_ref_scoped);
+    in_use_ids.forEach(function (def) {
+        var init = initializations.get(def.id);
+        if (init) init.forEach(function(init) {
+            init.walk(tw);
+        });
+    });
+    // pass 3: we should drop declarations not in_use
+    var tt = new TreeTransformer(
+        function before(node, descend, in_list) {
+            var parent = tt.parent();
+            if (drop_vars) {
+                const sym = assign_as_unused(node);
+                if (sym instanceof AST_SymbolRef) {
+                    var def = sym.definition();
+                    var in_use = in_use_ids.has(def.id);
+                    if (node instanceof AST_Assign) {
+                        if (!in_use || fixed_ids.has(def.id) && fixed_ids.get(def.id) !== node) {
+                            const assignee = node.right.transform(tt);
+                            if (!in_use && !assignee.has_side_effects(compressor) && !is_used_in_expression(tt)) {
+                                return in_list ? MAP.skip : make_node(AST_Number, node, { value: 0 });
+                            }
+                            return maintain_this_binding(parent, node, assignee);
+                        }
+                    } else if (!in_use) {
+                        return in_list ? MAP.skip : make_node(AST_Number, node, { value: 0 });
+                    }
+                }
+            }
+            if (scope !== self) return;
+            var def;
+            if (node.name
+                && (node instanceof AST_ClassExpression
+                    && !keep_name(compressor.option("keep_classnames"), (def = node.name.definition()).name)
+                || node instanceof AST_Function
+                    && !keep_name(compressor.option("keep_fnames"), (def = node.name.definition()).name))) {
+                // any declarations with same name will overshadow
+                // name of this anonymous function and can therefore
+                // never be used anywhere
+                if (!in_use_ids.has(def.id) || def.orig.length > 1) node.name = null;
+            }
+            if (node instanceof AST_Lambda && !(node instanceof AST_Accessor)) {
+                var trim =
+                    !compressor.option("keep_fargs")
+                    // Is this an IIFE that won't refer to its name?
+                    || parent instanceof AST_Call
+                        && parent.expression === node
+                        && !node.pinned()
+                        && (!node.name || node.name.unreferenced());
+                for (var a = node.argnames, i = a.length; --i >= 0;) {
+                    var sym = a[i];
+                    if (sym instanceof AST_Expansion) {
+                        sym = sym.expression;
+                    }
+                    if (sym instanceof AST_DefaultAssign) {
+                        sym = sym.left;
+                    }
+                    // Do not drop destructuring arguments.
+                    // They constitute a type assertion of sorts
+                    if (
+                        !(sym instanceof AST_Destructuring)
+                        && !in_use_ids.has(sym.definition().id)
+                    ) {
+                        set_flag(sym, UNUSED);
+                        if (trim) {
+                            a.pop();
+                        }
+                    } else {
+                        trim = false;
+                    }
+                }
+            }
+            if (node instanceof AST_DefClass && node !== self) {
+                const def = node.name.definition();
+                descend(node, this);
+                const keep_class = def.global && !drop_funcs || in_use_ids.has(def.id);
+                if (!keep_class) {
+                    const kept = node.drop_side_effect_free(compressor);
+                    if (kept == null) {
+                        def.eliminated++;
+                        return in_list ? MAP.skip : make_node(AST_EmptyStatement, node);
+                    }
+                    return kept;
+                }
+                return node;
+            }
+            if (node instanceof AST_Defun && node !== self) {
+                const def = node.name.definition();
+                const keep = def.global && !drop_funcs || in_use_ids.has(def.id);
+                if (!keep) {
+                    def.eliminated++;
+                    return in_list ? MAP.skip : make_node(AST_EmptyStatement, node);
+                }
+            }
+            if (node instanceof AST_Definitions && !(parent instanceof AST_ForIn && parent.init === node)) {
+                var drop_block = !(parent instanceof AST_Toplevel) && !(node instanceof AST_Var);
+                // place uninitialized names at the start
+                var body = [], head = [], tail = [];
+                // for unused names whose initialization has
+                // side effects, we can cascade the init. code
+                // into the next one, or next statement.
+                var side_effects = [];
+                node.definitions.forEach(function(def) {
+                    if (def.value) def.value = def.value.transform(tt);
+                    var is_destructure = def.name instanceof AST_Destructuring;
+                    var sym = is_destructure
+                        ? new SymbolDef(null, { name: "<destructure>" }) /* fake SymbolDef */
+                        : def.name.definition();
+                    if (drop_block && sym.global) return tail.push(def);
+                    if (!(drop_vars || drop_block)
+                        || is_destructure
+                            && (def.name.names.length
+                                || def.name.is_array
+                                || compressor.option("pure_getters") != true)
+                        || in_use_ids.has(sym.id)
+                    ) {
+                        if (def.value && fixed_ids.has(sym.id) && fixed_ids.get(sym.id) !== def) {
+                            def.value = def.value.drop_side_effect_free(compressor);
+                        }
+                        if (def.name instanceof AST_SymbolVar) {
+                            var var_defs = var_defs_by_id.get(sym.id);
+                            if (var_defs.length > 1 && (!def.value || sym.orig.indexOf(def.name) > sym.eliminated)) {
+                                if (def.value) {
+                                    var ref = make_node(AST_SymbolRef, def.name, def.name);
+                                    sym.references.push(ref);
+                                    var assign = make_node(AST_Assign, def, {
+                                        operator: "=",
+                                        logical: false,
+                                        left: ref,
+                                        right: def.value
+                                    });
+                                    if (fixed_ids.get(sym.id) === def) {
+                                        fixed_ids.set(sym.id, assign);
+                                    }
+                                    side_effects.push(assign.transform(tt));
+                                }
+                                remove(var_defs, def);
+                                sym.eliminated++;
+                                return;
+                            }
+                        }
+                        if (def.value) {
+                            if (side_effects.length > 0) {
+                                if (tail.length > 0) {
+                                    side_effects.push(def.value);
+                                    def.value = make_sequence(def.value, side_effects);
+                                } else {
+                                    body.push(make_node(AST_SimpleStatement, node, {
+                                        body: make_sequence(node, side_effects)
+                                    }));
+                                }
+                                side_effects = [];
+                            }
+                            tail.push(def);
+                        } else {
+                            head.push(def);
+                        }
+                    } else if (sym.orig[0] instanceof AST_SymbolCatch) {
+                        var value = def.value && def.value.drop_side_effect_free(compressor);
+                        if (value) side_effects.push(value);
+                        def.value = null;
+                        head.push(def);
+                    } else {
+                        var value = def.value && def.value.drop_side_effect_free(compressor);
+                        if (value) {
+                            side_effects.push(value);
+                        }
+                        sym.eliminated++;
+                    }
+                });
+                if (head.length > 0 || tail.length > 0) {
+                    node.definitions = head.concat(tail);
+                    body.push(node);
+                }
+                if (side_effects.length > 0) {
+                    body.push(make_node(AST_SimpleStatement, node, {
+                        body: make_sequence(node, side_effects)
+                    }));
+                }
+                switch (body.length) {
+                  case 0:
+                    return in_list ? MAP.skip : make_node(AST_EmptyStatement, node);
+                  case 1:
+                    return body[0];
+                  default:
+                    return in_list ? MAP.splice(body) : make_node(AST_BlockStatement, node, { body });
+                }
+            }
+            // certain combination of unused name + side effect leads to:
+            //    https://github.com/mishoo/UglifyJS2/issues/44
+            //    https://github.com/mishoo/UglifyJS2/issues/1830
+            //    https://github.com/mishoo/UglifyJS2/issues/1838
+            // that's an invalid AST.
+            // We fix it at this stage by moving the `var` outside the `for`.
+            if (node instanceof AST_For) {
+                descend(node, this);
+                var block;
+                if (node.init instanceof AST_BlockStatement) {
+                    block = node.init;
+                    node.init = block.body.pop();
+                    block.body.push(node);
+                }
+                if (node.init instanceof AST_SimpleStatement) {
+                    node.init = node.init.body;
+                } else if (is_empty(node.init)) {
+                    node.init = null;
+                }
+                return !block ? node : in_list ? MAP.splice(block.body) : block;
+            }
+            if (node instanceof AST_LabeledStatement
+                && node.body instanceof AST_For
+            ) {
+                descend(node, this);
+                if (node.body instanceof AST_BlockStatement) {
+                    var block = node.body;
+                    node.body = block.body.pop();
+                    block.body.push(node);
+                    return in_list ? MAP.splice(block.body) : block;
+                }
+                return node;
+            }
+            if (node instanceof AST_BlockStatement) {
+                descend(node, this);
+                if (in_list && node.body.every(can_be_evicted_from_block)) {
+                    return MAP.splice(node.body);
+                }
+                return node;
+            }
+            if (node instanceof AST_Scope && !(node instanceof AST_ClassStaticBlock)) {
+                const save_scope = scope;
+                scope = node;
+                descend(node, this);
+                scope = save_scope;
+                return node;
+            }
+        },
+        function after(node, in_list) {
+            if (node instanceof AST_Sequence) {
+                switch (node.expressions.length) {
+                    case 0: return in_list ? MAP.skip : make_node(AST_Number, node, { value: 0 });
+                    case 1: return node.expressions[0];
+                }
+            }
+        }
+    );
+
+    self.transform(tt);
+
+    function scan_ref_scoped(node, descend) {
+        var node_def;
+        const sym = assign_as_unused(node);
+        if (sym instanceof AST_SymbolRef
+            && !is_ref_of(node.left, AST_SymbolBlockDeclaration)
+            && self.variables.get(sym.name) === (node_def = sym.definition())
+        ) {
+            if (node instanceof AST_Assign) {
+                node.right.walk(tw);
+                if (!node_def.chained && node.left.fixed_value() === node.right) {
+                    fixed_ids.set(node_def.id, node);
+                }
+            }
+            return true;
+        }
+        if (node instanceof AST_SymbolRef) {
+            node_def = node.definition();
+            if (!in_use_ids.has(node_def.id)) {
+                in_use_ids.set(node_def.id, node_def);
+                if (node_def.orig[0] instanceof AST_SymbolCatch) {
+                    const redef = node_def.scope.is_block_scope()
+                        && node_def.scope.get_defun_scope().variables.get(node_def.name);
+                    if (redef) in_use_ids.set(redef.id, redef);
+                }
+            }
+            return true;
+        }
+        if (node instanceof AST_Class) {
+            descend();
+            return true;
+        }
+        if (node instanceof AST_Scope && !(node instanceof AST_ClassStaticBlock)) {
+            var save_scope = scope;
+            scope = node;
+            descend();
+            scope = save_scope;
+            return true;
+        }
+    }
+});

node_modules/terser/lib/compress/evaluate.js

@@ -0,0 +1,521 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+import {
+    HOP,
+    makePredicate,
+    return_this,
+    string_template,
+    regexp_source_fix,
+    regexp_is_safe,
+} from "../utils/index.js";
+import {
+    AST_Array,
+    AST_BigInt,
+    AST_Binary,
+    AST_Call,
+    AST_Chain,
+    AST_Class,
+    AST_Conditional,
+    AST_Constant,
+    AST_Dot,
+    AST_Expansion,
+    AST_Function,
+    AST_Lambda,
+    AST_New,
+    AST_Node,
+    AST_Object,
+    AST_PropAccess,
+    AST_RegExp,
+    AST_Statement,
+    AST_Symbol,
+    AST_SymbolRef,
+    AST_TemplateString,
+    AST_UnaryPrefix,
+    AST_With,
+} from "../ast.js";
+import { is_undeclared_ref} from "./inference.js";
+import { is_pure_native_value, is_pure_native_fn, is_pure_native_method } from "./native-objects.js";
+
+// methods to evaluate a constant expression
+
+function def_eval(node, func) {
+    node.DEFMETHOD("_eval", func);
+}
+
+// Used to propagate a nullish short-circuit signal upwards through the chain.
+export const nullish = Symbol("This AST_Chain is nullish");
+
+// If the node has been successfully reduced to a constant,
+// then its value is returned; otherwise the element itself
+// is returned.
+// They can be distinguished as constant value is never a
+// descendant of AST_Node.
+AST_Node.DEFMETHOD("evaluate", function (compressor) {
+    if (!compressor.option("evaluate"))
+        return this;
+    var val = this._eval(compressor, 1);
+    if (!val || val instanceof RegExp)
+        return val;
+    if (typeof val == "function" || typeof val == "object" || val == nullish)
+        return this;
+
+    // Evaluated strings can be larger than the original expression
+    if (typeof val === "string") {
+        const unevaluated_size = this.size(compressor);
+        if (val.length + 2 > unevaluated_size) return this;
+    }
+
+    return val;
+});
+
+var unaryPrefix = makePredicate("! ~ - + void");
+AST_Node.DEFMETHOD("is_constant", function () {
+    // Accomodate when compress option evaluate=false
+    // as well as the common constant expressions !0 and -1
+    if (this instanceof AST_Constant) {
+        return !(this instanceof AST_RegExp);
+    } else {
+        return this instanceof AST_UnaryPrefix
+            && unaryPrefix.has(this.operator)
+            && (
+                // `this.expression` may be an `AST_RegExp`,
+                // so not only `.is_constant()`.
+                this.expression instanceof AST_Constant
+                || this.expression.is_constant()
+            );
+    }
+});
+
+def_eval(AST_Statement, function () {
+    throw new Error(string_template("Cannot evaluate a statement [{file}:{line},{col}]", this.start));
+});
+
+def_eval(AST_Lambda, return_this);
+def_eval(AST_Class, return_this);
+def_eval(AST_Node, return_this);
+def_eval(AST_Constant, function () {
+    return this.getValue();
+});
+
+const supports_bigint = typeof BigInt === "function";
+def_eval(AST_BigInt, function () {
+    if (supports_bigint) {
+        return BigInt(this.value);
+    } else {
+        return this;
+    }
+});
+
+def_eval(AST_RegExp, function (compressor) {
+    let evaluated = compressor.evaluated_regexps.get(this.value);
+    if (evaluated === undefined && regexp_is_safe(this.value.source)) {
+        try {
+            const { source, flags } = this.value;
+            evaluated = new RegExp(source, flags);
+        } catch (e) {
+            evaluated = null;
+        }
+        compressor.evaluated_regexps.set(this.value, evaluated);
+    }
+    return evaluated || this;
+});
+
+def_eval(AST_TemplateString, function () {
+    if (this.segments.length !== 1) return this;
+    return this.segments[0].value;
+});
+
+def_eval(AST_Function, function (compressor) {
+    if (compressor.option("unsafe")) {
+        var fn = function () { };
+        fn.node = this;
+        fn.toString = () => this.print_to_string();
+        return fn;
+    }
+    return this;
+});
+
+def_eval(AST_Array, function (compressor, depth) {
+    if (compressor.option("unsafe")) {
+        var elements = [];
+        for (var i = 0, len = this.elements.length; i < len; i++) {
+            var element = this.elements[i];
+            var value = element._eval(compressor, depth);
+            if (element === value)
+                return this;
+            elements.push(value);
+        }
+        return elements;
+    }
+    return this;
+});
+
+def_eval(AST_Object, function (compressor, depth) {
+    if (compressor.option("unsafe")) {
+        var val = {};
+        for (var i = 0, len = this.properties.length; i < len; i++) {
+            var prop = this.properties[i];
+            if (prop instanceof AST_Expansion)
+                return this;
+            var key = prop.key;
+            if (key instanceof AST_Symbol) {
+                key = key.name;
+            } else if (key instanceof AST_Node) {
+                key = key._eval(compressor, depth);
+                if (key === prop.key)
+                    return this;
+            }
+            if (typeof Object.prototype[key] === "function") {
+                return this;
+            }
+            if (prop.value instanceof AST_Function)
+                continue;
+            val[key] = prop.value._eval(compressor, depth);
+            if (val[key] === prop.value)
+                return this;
+        }
+        return val;
+    }
+    return this;
+});
+
+var non_converting_unary = makePredicate("! typeof void");
+def_eval(AST_UnaryPrefix, function (compressor, depth) {
+    var e = this.expression;
+    if (compressor.option("typeofs")
+        && this.operator == "typeof") {
+        // Function would be evaluated to an array and so typeof would
+        // incorrectly return 'object'. Hence making is a special case.
+        if (e instanceof AST_Lambda
+            || e instanceof AST_SymbolRef
+            && e.fixed_value() instanceof AST_Lambda) {
+            return typeof function () { };
+        }
+        if (
+            (e instanceof AST_Object
+                || e instanceof AST_Array
+                || (e instanceof AST_SymbolRef
+                    && (e.fixed_value() instanceof AST_Object
+                        || e.fixed_value() instanceof AST_Array)))
+            && !e.has_side_effects(compressor)
+        ) {
+            return typeof {};
+        }
+    }
+    if (!non_converting_unary.has(this.operator))
+        depth++;
+    e = e._eval(compressor, depth);
+    if (e === this.expression)
+        return this;
+    switch (this.operator) {
+        case "!": return !e;
+        case "typeof":
+            // typeof <RegExp> returns "object" or "function" on different platforms
+            // so cannot evaluate reliably
+            if (e instanceof RegExp)
+                return this;
+            return typeof e;
+        case "void": return void e;
+        case "~": return ~e;
+        case "-": return -e;
+        case "+": return +e;
+    }
+    return this;
+});
+
+var non_converting_binary = makePredicate("&& || ?? === !==");
+const identity_comparison = makePredicate("== != === !==");
+const has_identity = value => typeof value === "object"
+    || typeof value === "function"
+    || typeof value === "symbol";
+
+def_eval(AST_Binary, function (compressor, depth) {
+    if (!non_converting_binary.has(this.operator))
+        depth++;
+
+    var left = this.left._eval(compressor, depth);
+    if (left === this.left)
+        return this;
+    var right = this.right._eval(compressor, depth);
+    if (right === this.right)
+        return this;
+
+    if (left != null
+        && right != null
+        && identity_comparison.has(this.operator)
+        && has_identity(left)
+        && has_identity(right)
+        && typeof left === typeof right) {
+        // Do not compare by reference
+        return this;
+    }
+
+    // Do not mix BigInt and Number; Don't use `>>>` on BigInt or `/ 0n`
+    if (
+        (typeof left === "bigint") !== (typeof right === "bigint")
+        || typeof left === "bigint"
+            && (this.operator === ">>>"
+                || this.operator === "/" && Number(right) === 0)
+    ) {
+        return this;
+    }
+
+    var result;
+    switch (this.operator) {
+        case "&&": result = left && right; break;
+        case "||": result = left || right; break;
+        case "??": result = left != null ? left : right; break;
+        case "|": result = left | right; break;
+        case "&": result = left & right; break;
+        case "^": result = left ^ right; break;
+        case "+": result = left + right; break;
+        case "*": result = left * right; break;
+        case "**": result = left ** right; break;
+        case "/": result = left / right; break;
+        case "%": result = left % right; break;
+        case "-": result = left - right; break;
+        case "<<": result = left << right; break;
+        case ">>": result = left >> right; break;
+        case ">>>": result = left >>> right; break;
+        case "==": result = left == right; break;
+        case "===": result = left === right; break;
+        case "!=": result = left != right; break;
+        case "!==": result = left !== right; break;
+        case "<": result = left < right; break;
+        case "<=": result = left <= right; break;
+        case ">": result = left > right; break;
+        case ">=": result = left >= right; break;
+        default:
+            return this;
+    }
+    if (typeof result === "number" && isNaN(result) && compressor.find_parent(AST_With)) {
+        // leave original expression as is
+        return this;
+    }
+    return result;
+});
+
+def_eval(AST_Conditional, function (compressor, depth) {
+    var condition = this.condition._eval(compressor, depth);
+    if (condition === this.condition)
+        return this;
+    var node = condition ? this.consequent : this.alternative;
+    var value = node._eval(compressor, depth);
+    return value === node ? this : value;
+});
+
+// Set of AST_SymbolRef which are currently being evaluated.
+// Avoids infinite recursion of ._eval()
+const reentrant_ref_eval = new Set();
+def_eval(AST_SymbolRef, function (compressor, depth) {
+    if (reentrant_ref_eval.has(this))
+        return this;
+
+    var fixed = this.fixed_value();
+    if (!fixed)
+        return this;
+
+    reentrant_ref_eval.add(this);
+    const value = fixed._eval(compressor, depth);
+    reentrant_ref_eval.delete(this);
+
+    if (value === fixed)
+        return this;
+
+    if (value && typeof value == "object") {
+        var escaped = this.definition().escaped;
+        if (escaped && depth > escaped)
+            return this;
+    }
+    return value;
+});
+
+const global_objs = { Array, Math, Number, Object, String };
+
+const regexp_flags = new Set([
+    "dotAll",
+    "global",
+    "ignoreCase",
+    "multiline",
+    "sticky",
+    "unicode",
+]);
+
+def_eval(AST_PropAccess, function (compressor, depth) {
+    let obj = this.expression._eval(compressor, depth + 1);
+    if (obj === nullish || (this.optional && obj == null)) return nullish;
+
+    // `.length` of strings and arrays is always safe
+    if (this.property === "length") {
+        if (typeof obj === "string") {
+            return obj.length;
+        }
+
+        const is_spreadless_array =
+            obj instanceof AST_Array
+            && obj.elements.every(el => !(el instanceof AST_Expansion));
+
+        if (
+            is_spreadless_array
+            && obj.elements.every(el => !el.has_side_effects(compressor))
+        ) {
+            return obj.elements.length;
+        }
+    }
+
+    if (compressor.option("unsafe")) {
+        var key = this.property;
+        if (key instanceof AST_Node) {
+            key = key._eval(compressor, depth);
+            if (key === this.property)
+                return this;
+        }
+
+        var exp = this.expression;
+        if (is_undeclared_ref(exp)) {
+            var aa;
+            var first_arg = exp.name === "hasOwnProperty"
+                && key === "call"
+                && (aa = compressor.parent() && compressor.parent().args)
+                && (aa && aa[0]
+                    && aa[0].evaluate(compressor));
+
+            first_arg = first_arg instanceof AST_Dot ? first_arg.expression : first_arg;
+
+            if (first_arg == null || first_arg.thedef && first_arg.thedef.undeclared) {
+                return this.clone();
+            }
+            if (!is_pure_native_value(exp.name, key))
+                return this;
+            obj = global_objs[exp.name];
+        } else {
+            if (obj instanceof RegExp) {
+                if (key == "source") {
+                    return regexp_source_fix(obj.source);
+                } else if (key == "flags" || regexp_flags.has(key)) {
+                    return obj[key];
+                }
+            }
+            if (!obj || obj === exp || !HOP(obj, key))
+                return this;
+
+            if (typeof obj == "function")
+                switch (key) {
+                    case "name":
+                        return obj.node.name ? obj.node.name.name : "";
+                    case "length":
+                        return obj.node.length_property();
+                    default:
+                        return this;
+                }
+        }
+        return obj[key];
+    }
+    return this;
+});
+
+def_eval(AST_Chain, function (compressor, depth) {
+    const evaluated = this.expression._eval(compressor, depth);
+    return evaluated === nullish
+        ? undefined
+        : evaluated === this.expression
+          ? this
+          : evaluated;
+});
+
+def_eval(AST_Call, function (compressor, depth) {
+    var exp = this.expression;
+
+    const callee = exp._eval(compressor, depth);
+    if (callee === nullish || (this.optional && callee == null)) return nullish;
+
+    if (compressor.option("unsafe") && exp instanceof AST_PropAccess) {
+        var key = exp.property;
+        if (key instanceof AST_Node) {
+            key = key._eval(compressor, depth);
+            if (key === exp.property)
+                return this;
+        }
+        var val;
+        var e = exp.expression;
+        if (is_undeclared_ref(e)) {
+            var first_arg = e.name === "hasOwnProperty" &&
+                key === "call" &&
+                (this.args[0] && this.args[0].evaluate(compressor));
+
+            first_arg = first_arg instanceof AST_Dot ? first_arg.expression : first_arg;
+
+            if ((first_arg == null || first_arg.thedef && first_arg.thedef.undeclared)) {
+                return this.clone();
+            }
+            if (!is_pure_native_fn(e.name, key)) return this;
+            val = global_objs[e.name];
+        } else {
+            val = e._eval(compressor, depth + 1);
+            if (val === e || !val)
+                return this;
+            if (!is_pure_native_method(val.constructor.name, key))
+                return this;
+        }
+        var args = [];
+        for (var i = 0, len = this.args.length; i < len; i++) {
+            var arg = this.args[i];
+            var value = arg._eval(compressor, depth);
+            if (arg === value)
+                return this;
+            if (arg instanceof AST_Lambda)
+                return this;
+            args.push(value);
+        }
+        try {
+            return val[key].apply(val, args);
+        } catch (ex) {
+            // We don't really care
+        }
+    }
+    return this;
+});
+
+// Also a subclass of AST_Call
+def_eval(AST_New, return_this);

node_modules/terser/lib/compress/global-defs.js

@@ -0,0 +1,92 @@
+import {
+    AST_Array,
+    AST_Chain,
+    AST_Constant,
+    AST_Dot,
+    AST_ImportMeta,
+    AST_Node,
+    AST_Object,
+    AST_ObjectKeyVal,
+    AST_PropAccess,
+    AST_SymbolDeclaration,
+    AST_SymbolRef,
+    AST_Toplevel,
+    TreeTransformer,
+} from "../ast.js";
+import { make_node, noop, HOP } from "../utils/index.js";
+import { make_node_from_constant } from "./common.js";
+import { is_lhs } from "./inference.js";
+
+(function(def_find_defs) {
+    function to_node(value, orig) {
+        if (value instanceof AST_Node) {
+            if (!(value instanceof AST_Constant)) {
+                // Value may be a function, an array including functions and even a complex assign / block expression,
+                // so it should never be shared in different places.
+                // Otherwise wrong information may be used in the compression phase
+                value = value.clone(true);
+            }
+            return make_node(value.CTOR, orig, value);
+        }
+        if (Array.isArray(value)) return make_node(AST_Array, orig, {
+            elements: value.map(function(value) {
+                return to_node(value, orig);
+            })
+        });
+        if (value && typeof value == "object") {
+            var props = [];
+            for (var key in value) if (HOP(value, key)) {
+                props.push(make_node(AST_ObjectKeyVal, orig, {
+                    key: key,
+                    value: to_node(value[key], orig)
+                }));
+            }
+            return make_node(AST_Object, orig, {
+                properties: props
+            });
+        }
+        return make_node_from_constant(value, orig);
+    }
+
+    AST_Toplevel.DEFMETHOD("resolve_defines", function(compressor) {
+        if (!compressor.option("global_defs")) return this;
+        this.figure_out_scope({ ie8: compressor.option("ie8") });
+        return this.transform(new TreeTransformer(function(node) {
+            var def = node._find_defs(compressor, "");
+            if (!def) return;
+            var level = 0, child = node, parent;
+            while (parent = this.parent(level++)) {
+                if (!(parent instanceof AST_PropAccess)) break;
+                if (parent.expression !== child) break;
+                child = parent;
+            }
+            if (is_lhs(child, parent)) {
+                return;
+            }
+            return def;
+        }));
+    });
+    def_find_defs(AST_Node, noop);
+    def_find_defs(AST_Chain, function(compressor, suffix) {
+        return this.expression._find_defs(compressor, suffix);
+    });
+    def_find_defs(AST_Dot, function(compressor, suffix) {
+        return this.expression._find_defs(compressor, "." + this.property + suffix);
+    });
+    def_find_defs(AST_SymbolDeclaration, function() {
+        if (!this.global()) return;
+    });
+    def_find_defs(AST_SymbolRef, function(compressor, suffix) {
+        if (!this.global()) return;
+        var defines = compressor.option("global_defs");
+        var name = this.name + suffix;
+        if (HOP(defines, name)) return to_node(defines[name], this);
+    });
+    def_find_defs(AST_ImportMeta, function(compressor, suffix) {
+        var defines = compressor.option("global_defs");
+        var name = "import.meta" + suffix;
+        if (HOP(defines, name)) return to_node(defines[name], this);
+    });
+})(function(node, func) {
+    node.DEFMETHOD("_find_defs", func);
+});

node_modules/terser/lib/compress/inline.js

@@ -0,0 +1,684 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+import {
+    AST_Array,
+    AST_Assign,
+    AST_Block,
+    AST_Call,
+    AST_Catch,
+    AST_Class,
+    AST_ClassExpression,
+    AST_DefaultAssign,
+    AST_DefClass,
+    AST_Defun,
+    AST_Destructuring,
+    AST_EmptyStatement,
+    AST_Expansion,
+    AST_Export,
+    AST_Function,
+    AST_IterationStatement,
+    AST_Lambda,
+    AST_Node,
+    AST_Number,
+    AST_Object,
+    AST_ObjectKeyVal,
+    AST_PropAccess,
+    AST_Return,
+    AST_Scope,
+    AST_SimpleStatement,
+    AST_Statement,
+    AST_SymbolDefun,
+    AST_SymbolFunarg,
+    AST_SymbolLambda,
+    AST_SymbolRef,
+    AST_SymbolVar,
+    AST_This,
+    AST_Toplevel,
+    AST_UnaryPrefix,
+    AST_Undefined,
+    AST_Var,
+    AST_VarDef,
+
+    walk,
+
+    _INLINE,
+    _NOINLINE,
+    _PURE,
+} from "../ast.js";
+import { make_node, has_annotation } from "../utils/index.js";
+import "../size.js";
+
+import "./evaluate.js";
+import "./drop-side-effect-free.js";
+import "./reduce-vars.js";
+import {
+    SQUEEZED,
+    INLINED,
+    UNUSED,
+
+    has_flag,
+    set_flag,
+} from "./compressor-flags.js";
+import {
+    make_sequence,
+    best_of,
+    make_node_from_constant,
+    identifier_atom,
+    is_empty,
+    is_func_expr,
+    is_iife_call,
+    is_reachable,
+    is_recursive_ref,
+    retain_top_func,
+} from "./common.js";
+
+/**
+ * Module that contains the inlining logic.
+ *
+ * @module
+ *
+ * The stars of the show are `inline_into_symbolref` and `inline_into_call`.
+ */
+
+function within_array_or_object_literal(compressor) {
+    var node, level = 0;
+    while (node = compressor.parent(level++)) {
+        if (node instanceof AST_Statement) return false;
+        if (node instanceof AST_Array
+            || node instanceof AST_ObjectKeyVal
+            || node instanceof AST_Object) {
+            return true;
+        }
+    }
+    return false;
+}
+
+function scope_encloses_variables_in_this_scope(scope, pulled_scope) {
+    for (const enclosed of pulled_scope.enclosed) {
+        if (pulled_scope.variables.has(enclosed.name)) {
+            continue;
+        }
+        const looked_up = scope.find_variable(enclosed.name);
+        if (looked_up) {
+            if (looked_up === enclosed) continue;
+            return true;
+        }
+    }
+    return false;
+}
+
+/**
+ * An extra check function for `top_retain` option, compare the length of const identifier
+ * and init value length and return true if init value is longer than identifier. for example:
+ * ```
+ * // top_retain: ["example"]
+ * const example = 100
+ * ```
+ * it will return false because length of "100" is short than identifier "example".
+ */
+function is_const_symbol_short_than_init_value(def, fixed_value) {
+    if (def.orig.length === 1 && fixed_value) {
+        const init_value_length = fixed_value.size();
+        const identifer_length = def.name.length;
+        return init_value_length > identifer_length;
+    }
+    return true;
+}
+
+export function inline_into_symbolref(self, compressor) {
+    if (compressor.in_computed_key()) return self;
+
+    const parent = compressor.parent();
+    const def = self.definition();
+    const nearest_scope = compressor.find_scope();
+    let fixed = self.fixed_value();
+    if (
+        compressor.top_retain &&
+        def.global && 
+        compressor.top_retain(def) && 
+        // when identifier is in top_retain option dose not mean we can always inline it.
+        // if identifier name is longer then init value, we can replace it.
+        is_const_symbol_short_than_init_value(def, fixed)
+    ) {
+        // keep it
+        def.fixed = false;
+        def.single_use = false;
+        return self;
+    }
+
+    if (dont_inline_lambda_in_loop(compressor, fixed)) return self;
+
+    let single_use = def.single_use
+        && !(parent instanceof AST_Call
+            && (parent.is_callee_pure(compressor))
+                || has_annotation(parent, _NOINLINE))
+        && !(parent instanceof AST_Export
+            && fixed instanceof AST_Lambda
+            && fixed.name);
+
+    if (single_use && fixed instanceof AST_Node) {
+        single_use =
+            !fixed.has_side_effects(compressor)
+            && !fixed.may_throw(compressor);
+    }
+
+    if (fixed instanceof AST_Class && def.scope !== self.scope) {
+        return self;
+    }
+
+    if (single_use && (fixed instanceof AST_Lambda || fixed instanceof AST_Class)) {
+        if (retain_top_func(fixed, compressor)) {
+            single_use = false;
+        } else if (def.scope !== self.scope
+            && (def.escaped == 1
+                || has_flag(fixed, INLINED)
+                || within_array_or_object_literal(compressor)
+                || !compressor.option("reduce_funcs"))) {
+            single_use = false;
+        } else if (is_recursive_ref(compressor, def)) {
+            single_use = false;
+        } else if (def.scope !== self.scope || def.orig[0] instanceof AST_SymbolFunarg) {
+            single_use = fixed.is_constant_expression(self.scope);
+            if (single_use == "f") {
+                var scope = self.scope;
+                do {
+                    if (scope instanceof AST_Defun || is_func_expr(scope)) {
+                        set_flag(scope, INLINED);
+                    }
+                } while (scope = scope.parent_scope);
+            }
+        }
+    }
+
+    if (single_use && (fixed instanceof AST_Lambda || fixed instanceof AST_Class)) {
+        single_use =
+            def.scope === self.scope
+                && !scope_encloses_variables_in_this_scope(nearest_scope, fixed)
+            || parent instanceof AST_Call
+                && parent.expression === self
+                && !scope_encloses_variables_in_this_scope(nearest_scope, fixed)
+                && !(fixed.name && fixed.name.definition().recursive_refs > 0);
+    }
+
+    if (single_use && fixed) {
+        if (fixed instanceof AST_DefClass) {
+            set_flag(fixed, SQUEEZED);
+            fixed = make_node(AST_ClassExpression, fixed, fixed);
+        }
+        if (fixed instanceof AST_Defun) {
+            set_flag(fixed, SQUEEZED);
+            fixed = make_node(AST_Function, fixed, fixed);
+        }
+        if (def.recursive_refs > 0 && fixed.name instanceof AST_SymbolDefun) {
+            const defun_def = fixed.name.definition();
+            let lambda_def = fixed.variables.get(fixed.name.name);
+            let name = lambda_def && lambda_def.orig[0];
+            if (!(name instanceof AST_SymbolLambda)) {
+                name = make_node(AST_SymbolLambda, fixed.name, fixed.name);
+                name.scope = fixed;
+                fixed.name = name;
+                lambda_def = fixed.def_function(name);
+            }
+            walk(fixed, node => {
+                if (node instanceof AST_SymbolRef && node.definition() === defun_def) {
+                    node.thedef = lambda_def;
+                    lambda_def.references.push(node);
+                }
+            });
+        }
+        if (
+            (fixed instanceof AST_Lambda || fixed instanceof AST_Class)
+            && fixed.parent_scope !== nearest_scope
+        ) {
+            fixed = fixed.clone(true, compressor.get_toplevel());
+
+            nearest_scope.add_child_scope(fixed);
+        }
+        return fixed.optimize(compressor);
+    }
+
+    // multiple uses
+    if (fixed) {
+        let replace;
+
+        if (fixed instanceof AST_This) {
+            if (!(def.orig[0] instanceof AST_SymbolFunarg)
+                && def.references.every((ref) =>
+                    def.scope === ref.scope
+                )) {
+                replace = fixed;
+            }
+        } else {
+            var ev = fixed.evaluate(compressor);
+            if (
+                ev !== fixed
+                && (compressor.option("unsafe_regexp") || !(ev instanceof RegExp))
+            ) {
+                replace = make_node_from_constant(ev, fixed);
+            }
+        }
+
+        if (replace) {
+            const name_length = self.size(compressor);
+            const replace_size = replace.size(compressor);
+
+            let overhead = 0;
+            if (compressor.option("unused") && !compressor.exposed(def)) {
+                overhead =
+                    (name_length + 2 + fixed.size(compressor)) /
+                    (def.references.length - def.assignments);
+            }
+
+            if (replace_size <= name_length + overhead) {
+                return replace;
+            }
+        }
+    }
+
+    return self;
+}
+
+export function inline_into_call(self, compressor) {
+    if (compressor.in_computed_key()) return self;
+
+    var exp = self.expression;
+    var fn = exp;
+    var simple_args = self.args.every((arg) => !(arg instanceof AST_Expansion));
+
+    if (compressor.option("reduce_vars")
+        && fn instanceof AST_SymbolRef
+        && !has_annotation(self, _NOINLINE)
+    ) {
+        const fixed = fn.fixed_value();
+
+        if (
+            retain_top_func(fixed, compressor)
+            || !compressor.toplevel.funcs && exp.definition().global
+        ) {
+            return self;
+        }
+
+        fn = fixed;
+    }
+
+    if (
+        dont_inline_lambda_in_loop(compressor, fn)
+        && !has_annotation(self, _INLINE)
+    ) return self;
+
+    var is_func = fn instanceof AST_Lambda;
+
+    var stat = is_func && fn.body[0];
+    var is_regular_func = is_func && !fn.is_generator && !fn.async;
+    var can_inline = is_regular_func && compressor.option("inline") && !self.is_callee_pure(compressor);
+    if (can_inline && stat instanceof AST_Return) {
+        let returned = stat.value;
+        if (!returned || returned.is_constant_expression()) {
+            if (returned) {
+                returned = returned.clone(true);
+            } else {
+                returned = make_node(AST_Undefined, self);
+            }
+            const args = self.args.concat(returned);
+            return make_sequence(self, args).optimize(compressor);
+        }
+
+        // optimize identity function
+        if (
+            fn.argnames.length === 1
+            && (fn.argnames[0] instanceof AST_SymbolFunarg)
+            && self.args.length < 2
+            && !(self.args[0] instanceof AST_Expansion)
+            && returned instanceof AST_SymbolRef
+            && returned.name === fn.argnames[0].name
+        ) {
+            const replacement =
+                (self.args[0] || make_node(AST_Undefined)).optimize(compressor);
+
+            let parent;
+            if (
+                replacement instanceof AST_PropAccess
+                && (parent = compressor.parent()) instanceof AST_Call
+                && parent.expression === self
+            ) {
+                // identity function was being used to remove `this`, like in
+                //
+                // id(bag.no_this)(...)
+                //
+                // Replace with a larger but more effish (0, bag.no_this) wrapper.
+
+                return make_sequence(self, [
+                    make_node(AST_Number, self, { value: 0 }),
+                    replacement
+                ]);
+            }
+            // replace call with first argument or undefined if none passed
+            return replacement;
+        }
+    }
+
+    if (can_inline) {
+        var scope, in_loop, level = -1;
+        let def;
+        let returned_value;
+        let nearest_scope;
+        if (simple_args
+            && !fn.uses_arguments
+            && !(compressor.parent() instanceof AST_Class)
+            && !(fn.name && fn instanceof AST_Function)
+            && (returned_value = can_flatten_body(stat))
+            && (exp === fn
+                || has_annotation(self, _INLINE)
+                || compressor.option("unused")
+                    && (def = exp.definition()).references.length == 1
+                    && !is_recursive_ref(compressor, def)
+                    && fn.is_constant_expression(exp.scope))
+            && !has_annotation(self, _PURE | _NOINLINE)
+            && !fn.contains_this()
+            && can_inject_symbols()
+            && (nearest_scope = compressor.find_scope())
+            && !scope_encloses_variables_in_this_scope(nearest_scope, fn)
+            && !(function in_default_assign() {
+                    // Due to the fact function parameters have their own scope
+                    // which can't use `var something` in the function body within,
+                    // we simply don't inline into DefaultAssign.
+                    let i = 0;
+                    let p;
+                    while ((p = compressor.parent(i++))) {
+                        if (p instanceof AST_DefaultAssign) return true;
+                        if (p instanceof AST_Block) break;
+                    }
+                    return false;
+                })()
+            && !(scope instanceof AST_Class)
+        ) {
+            set_flag(fn, SQUEEZED);
+            nearest_scope.add_child_scope(fn);
+            return make_sequence(self, flatten_fn(returned_value)).optimize(compressor);
+        }
+    }
+
+    if (can_inline && has_annotation(self, _INLINE)) {
+        set_flag(fn, SQUEEZED);
+        fn = make_node(fn.CTOR === AST_Defun ? AST_Function : fn.CTOR, fn, fn);
+        fn = fn.clone(true);
+        fn.figure_out_scope({}, {
+            parent_scope: compressor.find_scope(),
+            toplevel: compressor.get_toplevel()
+        });
+
+        return make_node(AST_Call, self, {
+            expression: fn,
+            args: self.args,
+        }).optimize(compressor);
+    }
+
+    const can_drop_this_call = is_regular_func && compressor.option("side_effects") && fn.body.every(is_empty);
+    if (can_drop_this_call) {
+        var args = self.args.concat(make_node(AST_Undefined, self));
+        return make_sequence(self, args).optimize(compressor);
+    }
+
+    if (compressor.option("negate_iife")
+        && compressor.parent() instanceof AST_SimpleStatement
+        && is_iife_call(self)) {
+        return self.negate(compressor, true);
+    }
+
+    var ev = self.evaluate(compressor);
+    if (ev !== self) {
+        ev = make_node_from_constant(ev, self).optimize(compressor);
+        return best_of(compressor, ev, self);
+    }
+
+    return self;
+
+    function return_value(stat) {
+        if (!stat) return make_node(AST_Undefined, self);
+        if (stat instanceof AST_Return) {
+            if (!stat.value) return make_node(AST_Undefined, self);
+            return stat.value.clone(true);
+        }
+        if (stat instanceof AST_SimpleStatement) {
+            return make_node(AST_UnaryPrefix, stat, {
+                operator: "void",
+                expression: stat.body.clone(true)
+            });
+        }
+    }
+
+    function can_flatten_body(stat) {
+        var body = fn.body;
+        var len = body.length;
+        if (compressor.option("inline") < 3) {
+            return len == 1 && return_value(stat);
+        }
+        stat = null;
+        for (var i = 0; i < len; i++) {
+            var line = body[i];
+            if (line instanceof AST_Var) {
+                if (stat && !line.definitions.every((var_def) =>
+                    !var_def.value
+                )) {
+                    return false;
+                }
+            } else if (stat) {
+                return false;
+            } else if (!(line instanceof AST_EmptyStatement)) {
+                stat = line;
+            }
+        }
+        return return_value(stat);
+    }
+
+    function can_inject_args(block_scoped, safe_to_inject) {
+        for (var i = 0, len = fn.argnames.length; i < len; i++) {
+            var arg = fn.argnames[i];
+            if (arg instanceof AST_DefaultAssign) {
+                if (has_flag(arg.left, UNUSED)) continue;
+                return false;
+            }
+            if (arg instanceof AST_Destructuring) return false;
+            if (arg instanceof AST_Expansion) {
+                if (has_flag(arg.expression, UNUSED)) continue;
+                return false;
+            }
+            if (has_flag(arg, UNUSED)) continue;
+            if (!safe_to_inject
+                || block_scoped.has(arg.name)
+                || identifier_atom.has(arg.name)
+                || scope.conflicting_def(arg.name)) {
+                return false;
+            }
+            if (in_loop) in_loop.push(arg.definition());
+        }
+        return true;
+    }
+
+    function can_inject_vars(block_scoped, safe_to_inject) {
+        var len = fn.body.length;
+        for (var i = 0; i < len; i++) {
+            var stat = fn.body[i];
+            if (!(stat instanceof AST_Var)) continue;
+            if (!safe_to_inject) return false;
+            for (var j = stat.definitions.length; --j >= 0;) {
+                var name = stat.definitions[j].name;
+                if (name instanceof AST_Destructuring
+                    || block_scoped.has(name.name)
+                    || identifier_atom.has(name.name)
+                    || scope.conflicting_def(name.name)) {
+                    return false;
+                }
+                if (in_loop) in_loop.push(name.definition());
+            }
+        }
+        return true;
+    }
+
+    function can_inject_symbols() {
+        var block_scoped = new Set();
+        do {
+            scope = compressor.parent(++level);
+            if (scope.is_block_scope() && scope.block_scope) {
+                // TODO this is sometimes undefined during compression.
+                // But it should always have a value!
+                scope.block_scope.variables.forEach(function (variable) {
+                    block_scoped.add(variable.name);
+                });
+            }
+            if (scope instanceof AST_Catch) {
+                // TODO can we delete? AST_Catch is a block scope.
+                if (scope.argname) {
+                    block_scoped.add(scope.argname.name);
+                }
+            } else if (scope instanceof AST_IterationStatement) {
+                in_loop = [];
+            } else if (scope instanceof AST_SymbolRef) {
+                if (scope.fixed_value() instanceof AST_Scope) return false;
+            }
+        } while (!(scope instanceof AST_Scope));
+
+        var safe_to_inject = !(scope instanceof AST_Toplevel) || compressor.toplevel.vars;
+        var inline = compressor.option("inline");
+        if (!can_inject_vars(block_scoped, inline >= 3 && safe_to_inject)) return false;
+        if (!can_inject_args(block_scoped, inline >= 2 && safe_to_inject)) return false;
+        return !in_loop || in_loop.length == 0 || !is_reachable(fn, in_loop);
+    }
+
+    function append_var(decls, expressions, name, value) {
+        var def = name.definition();
+
+        // Name already exists, only when a function argument had the same name
+        const already_appended = scope.variables.has(name.name);
+        if (!already_appended) {
+            scope.variables.set(name.name, def);
+            scope.enclosed.push(def);
+            decls.push(make_node(AST_VarDef, name, {
+                name: name,
+                value: null
+            }));
+        }
+
+        var sym = make_node(AST_SymbolRef, name, name);
+        def.references.push(sym);
+        if (value) expressions.push(make_node(AST_Assign, self, {
+            operator: "=",
+            logical: false,
+            left: sym,
+            right: value.clone()
+        }));
+    }
+
+    function flatten_args(decls, expressions) {
+        var len = fn.argnames.length;
+        for (var i = self.args.length; --i >= len;) {
+            expressions.push(self.args[i]);
+        }
+        for (i = len; --i >= 0;) {
+            var name = fn.argnames[i];
+            var value = self.args[i];
+            if (has_flag(name, UNUSED) || !name.name || scope.conflicting_def(name.name)) {
+                if (value) expressions.push(value);
+            } else {
+                var symbol = make_node(AST_SymbolVar, name, name);
+                name.definition().orig.push(symbol);
+                if (!value && in_loop) value = make_node(AST_Undefined, self);
+                append_var(decls, expressions, symbol, value);
+            }
+        }
+        decls.reverse();
+        expressions.reverse();
+    }
+
+    function flatten_vars(decls, expressions) {
+        var pos = expressions.length;
+        for (var i = 0, lines = fn.body.length; i < lines; i++) {
+            var stat = fn.body[i];
+            if (!(stat instanceof AST_Var)) continue;
+            for (var j = 0, defs = stat.definitions.length; j < defs; j++) {
+                var var_def = stat.definitions[j];
+                var name = var_def.name;
+                append_var(decls, expressions, name, var_def.value);
+                if (in_loop && fn.argnames.every((argname) =>
+                    argname.name != name.name
+                )) {
+                    var def = fn.variables.get(name.name);
+                    var sym = make_node(AST_SymbolRef, name, name);
+                    def.references.push(sym);
+                    expressions.splice(pos++, 0, make_node(AST_Assign, var_def, {
+                        operator: "=",
+                        logical: false,
+                        left: sym,
+                        right: make_node(AST_Undefined, name)
+                    }));
+                }
+            }
+        }
+    }
+
+    function flatten_fn(returned_value) {
+        var decls = [];
+        var expressions = [];
+        flatten_args(decls, expressions);
+        flatten_vars(decls, expressions);
+        expressions.push(returned_value);
+
+        if (decls.length) {
+            const i = scope.body.indexOf(compressor.parent(level - 1)) + 1;
+            scope.body.splice(i, 0, make_node(AST_Var, fn, {
+                definitions: decls
+            }));
+        }
+
+        return expressions.map(exp => exp.clone(true));
+    }
+}
+
+/** prevent inlining functions into loops, for performance reasons */
+function dont_inline_lambda_in_loop(compressor, maybe_lambda) {
+    return (
+        (maybe_lambda instanceof AST_Lambda || maybe_lambda instanceof AST_Class)
+        && !!compressor.is_within_loop()
+    );
+}

node_modules/terser/lib/compress/native-objects.js

@@ -0,0 +1,206 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+import { makePredicate } from "../utils/index.js";
+
+// Lists of native methods, useful for `unsafe` option which assumes they exist.
+// Note: Lots of methods and functions are missing here, in case they aren't pure
+// or not available in all JS environments.
+
+function make_nested_lookup(obj) {
+    const out = new Map();
+    for (var key of Object.keys(obj)) {
+        out.set(key, makePredicate(obj[key]));
+    }
+
+    const does_have = (global_name, fname) => {
+        const inner_map = out.get(global_name);
+        return inner_map != null && inner_map.has(fname);
+    };
+    return does_have;
+}
+
+// Objects which are safe to access without throwing or causing a side effect.
+// Usually we'd check the `unsafe` option first but these are way too common for that
+export const pure_prop_access_globals = new Set([
+    "Number",
+    "String",
+    "Array",
+    "Object",
+    "Function",
+    "Promise",
+]);
+
+const object_methods = [
+    "constructor",
+    "toString",
+    "valueOf",
+];
+
+export const is_pure_native_method = make_nested_lookup({
+    Array: [
+        "at",
+        "flat",
+        "includes",
+        "indexOf",
+        "join",
+        "lastIndexOf",
+        "slice",
+        ...object_methods,
+    ],
+    Boolean: object_methods,
+    Function: object_methods,
+    Number: [
+        "toExponential",
+        "toFixed",
+        "toPrecision",
+        ...object_methods,
+    ],
+    Object: object_methods,
+    RegExp: [
+        "test",
+        ...object_methods,
+    ],
+    String: [
+        "at",
+        "charAt",
+        "charCodeAt",
+        "charPointAt",
+        "concat",
+        "endsWith",
+        "fromCharCode",
+        "fromCodePoint",
+        "includes",
+        "indexOf",
+        "italics",
+        "lastIndexOf",
+        "localeCompare",
+        "match",
+        "matchAll",
+        "normalize",
+        "padStart",
+        "padEnd",
+        "repeat",
+        "replace",
+        "replaceAll",
+        "search",
+        "slice",
+        "split",
+        "startsWith",
+        "substr",
+        "substring",
+        "repeat",
+        "toLocaleLowerCase",
+        "toLocaleUpperCase",
+        "toLowerCase",
+        "toUpperCase",
+        "trim",
+        "trimEnd",
+        "trimStart",
+        ...object_methods,
+    ],
+});
+
+export const is_pure_native_fn = make_nested_lookup({
+    Array: [
+        "isArray",
+    ],
+    Math: [
+        "abs",
+        "acos",
+        "asin",
+        "atan",
+        "ceil",
+        "cos",
+        "exp",
+        "floor",
+        "log",
+        "round",
+        "sin",
+        "sqrt",
+        "tan",
+        "atan2",
+        "pow",
+        "max",
+        "min",
+    ],
+    Number: [
+        "isFinite",
+        "isNaN",
+    ],
+    Object: [
+        "create",
+        "getOwnPropertyDescriptor",
+        "getOwnPropertyNames",
+        "getPrototypeOf",
+        "isExtensible",
+        "isFrozen",
+        "isSealed",
+        "hasOwn",
+        "keys",
+    ],
+    String: [
+        "fromCharCode",
+    ],
+});
+
+// Known numeric values which come with JS environments
+export const is_pure_native_value = make_nested_lookup({
+    Math: [
+        "E",
+        "LN10",
+        "LN2",
+        "LOG2E",
+        "LOG10E",
+        "PI",
+        "SQRT1_2",
+        "SQRT2",
+    ],
+    Number: [
+        "MAX_VALUE",
+        "MIN_VALUE",
+        "NaN",
+        "NEGATIVE_INFINITY",
+        "POSITIVE_INFINITY",
+    ],
+});

node_modules/terser/lib/compress/reduce-vars.js

@@ -0,0 +1,865 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+import {
+    AST_Accessor,
+    AST_Array,
+    AST_Assign,
+    AST_Await,
+    AST_Binary,
+    AST_Block,
+    AST_Call,
+    AST_Case,
+    AST_Chain,
+    AST_Class,
+    AST_ClassStaticBlock,
+    AST_ClassExpression,
+    AST_Conditional,
+    AST_Default,
+    AST_Defun,
+    AST_Destructuring,
+    AST_Do,
+    AST_Exit,
+    AST_Expansion,
+    AST_For,
+    AST_ForIn,
+    AST_If,
+    AST_LabeledStatement,
+    AST_Lambda,
+    AST_New,
+    AST_Node,
+    AST_Number,
+    AST_ObjectKeyVal,
+    AST_PropAccess,
+    AST_Scope,
+    AST_Sequence,
+    AST_SimpleStatement,
+    AST_Symbol,
+    AST_SymbolCatch,
+    AST_SymbolConst,
+    AST_SymbolDeclaration,
+    AST_SymbolDefun,
+    AST_SymbolFunarg,
+    AST_SymbolLambda,
+    AST_SymbolRef,
+    AST_This,
+    AST_Toplevel,
+    AST_Try,
+    AST_Unary,
+    AST_UnaryPrefix,
+    AST_Undefined,
+    AST_UsingDef,
+    AST_VarDef,
+    AST_VarDefLike,
+    AST_While,
+    AST_Yield,
+
+    walk,
+    walk_body,
+    walk_parent,
+} from "../ast.js";
+import { HOP, make_node, noop } from "../utils/index.js";
+
+import { lazy_op, is_modified, is_lhs } from "./inference.js";
+import { INLINED, clear_flag } from "./compressor-flags.js";
+import { read_property, has_break_or_continue, is_recursive_ref } from "./common.js";
+
+/**
+ * Define the method AST_Node#reduce_vars, which goes through the AST in
+ * execution order to perform basic flow analysis
+ */
+function def_reduce_vars(node, func) {
+    node.DEFMETHOD("reduce_vars", func);
+}
+
+def_reduce_vars(AST_Node, noop);
+
+/** Clear definition properties */
+function reset_def(compressor, def) {
+    def.assignments = 0;
+    def.chained = false;
+    def.direct_access = false;
+    def.escaped = 0;
+    def.recursive_refs = 0;
+    def.references = [];
+    def.single_use = undefined;
+    if (
+        def.scope.pinned()
+        || (def.orig[0] instanceof AST_SymbolFunarg && def.scope.uses_arguments)
+    ) {
+        def.fixed = false;
+    } else if (def.orig[0] instanceof AST_SymbolConst || !compressor.exposed(def)) {
+        def.fixed = def.init;
+    } else {
+        def.fixed = false;
+    }
+}
+
+function reset_variables(tw, compressor, node) {
+    node.variables.forEach(function(def) {
+        reset_def(compressor, def);
+        if (def.fixed === null) {
+            tw.defs_to_safe_ids.set(def.id, tw.safe_ids);
+            mark(tw, def, true);
+        } else if (def.fixed) {
+            tw.loop_ids.set(def.id, tw.in_loop);
+            mark(tw, def, true);
+        }
+    });
+}
+
+function reset_block_variables(compressor, node) {
+    if (node.block_scope) node.block_scope.variables.forEach((def) => {
+        reset_def(compressor, def);
+    });
+}
+
+function push(tw) {
+    tw.safe_ids = Object.create(tw.safe_ids);
+}
+
+function pop(tw) {
+    tw.safe_ids = Object.getPrototypeOf(tw.safe_ids);
+}
+
+function mark(tw, def, safe) {
+    tw.safe_ids[def.id] = safe;
+}
+
+function safe_to_read(tw, def) {
+    if (def.single_use == "m") return false;
+    if (tw.safe_ids[def.id]) {
+        if (def.fixed == null) {
+            var orig = def.orig[0];
+            if (orig instanceof AST_SymbolFunarg || orig.name == "arguments") return false;
+            def.fixed = make_node(AST_Undefined, orig);
+        }
+        return true;
+    }
+    return def.fixed instanceof AST_Defun;
+}
+
+function safe_to_assign(tw, def, scope, value) {
+    if (def.fixed === undefined) return true;
+    let def_safe_ids;
+    if (def.fixed === null
+        && (def_safe_ids = tw.defs_to_safe_ids.get(def.id))
+    ) {
+        def_safe_ids[def.id] = false;
+        tw.defs_to_safe_ids.delete(def.id);
+        return true;
+    }
+    if (!HOP(tw.safe_ids, def.id)) return false;
+    if (!safe_to_read(tw, def)) return false;
+    if (def.fixed === false) return false;
+    if (def.fixed != null && (!value || def.references.length > def.assignments)) return false;
+    if (def.fixed instanceof AST_Defun) {
+        return value instanceof AST_Node && def.fixed.parent_scope === scope;
+    }
+    return def.orig.every((sym) => {
+        return !(sym instanceof AST_SymbolConst
+            || sym instanceof AST_SymbolDefun
+            || sym instanceof AST_SymbolLambda);
+    });
+}
+
+function ref_once(tw, compressor, def) {
+    return compressor.option("unused")
+        && !def.scope.pinned()
+        && def.references.length - def.recursive_refs == 1
+        && tw.loop_ids.get(def.id) === tw.in_loop;
+}
+
+function is_immutable(value) {
+    if (!value) return false;
+    return value.is_constant()
+        || value instanceof AST_Lambda
+        || value instanceof AST_This;
+}
+
+// A definition "escapes" when its value can leave the point of use.
+// Example: `a = b || c`
+// In this example, "b" and "c" are escaping, because they're going into "a"
+//
+// def.escaped is != 0 when it escapes.
+//
+// When greater than 1, it means that N chained properties will be read off
+// of that def before an escape occurs. This is useful for evaluating
+// property accesses, where you need to know when to stop.
+function mark_escaped(tw, d, scope, node, value, level = 0, depth = 1) {
+    var parent = tw.parent(level);
+    if (value) {
+        if (value.is_constant()) return;
+        if (value instanceof AST_ClassExpression) return;
+    }
+
+    if (
+        parent instanceof AST_Assign && (parent.operator === "=" || parent.logical) && node === parent.right
+        || parent instanceof AST_Call && (node !== parent.expression || parent instanceof AST_New)
+        || parent instanceof AST_Exit && node === parent.value && node.scope !== d.scope
+        || parent instanceof AST_VarDefLike && node === parent.value
+        || parent instanceof AST_Yield && node === parent.value && node.scope !== d.scope
+    ) {
+        if (depth > 1 && !(value && value.is_constant_expression(scope))) depth = 1;
+        if (!d.escaped || d.escaped > depth) d.escaped = depth;
+        return;
+    } else if (
+        parent instanceof AST_Array
+        || parent instanceof AST_Await
+        || parent instanceof AST_Binary && lazy_op.has(parent.operator)
+        || parent instanceof AST_Conditional && node !== parent.condition
+        || parent instanceof AST_Expansion
+        || parent instanceof AST_Sequence && node === parent.tail_node()
+    ) {
+        mark_escaped(tw, d, scope, parent, parent, level + 1, depth);
+    } else if (parent instanceof AST_ObjectKeyVal && node === parent.value) {
+        var obj = tw.parent(level + 1);
+
+        mark_escaped(tw, d, scope, obj, obj, level + 2, depth);
+    } else if (parent instanceof AST_PropAccess && node === parent.expression) {
+        value = read_property(value, parent.property);
+
+        mark_escaped(tw, d, scope, parent, value, level + 1, depth + 1);
+        if (value) return;
+    }
+
+    if (level > 0) return;
+    if (parent instanceof AST_Sequence && node !== parent.tail_node()) return;
+    if (parent instanceof AST_SimpleStatement) return;
+
+    d.direct_access = true;
+}
+
+const suppress = node => walk(node, node => {
+    if (!(node instanceof AST_Symbol)) return;
+    var d = node.definition();
+    if (!d) return;
+    if (node instanceof AST_SymbolRef) d.references.push(node);
+    d.fixed = false;
+});
+
+def_reduce_vars(AST_Accessor, function(tw, descend, compressor) {
+    push(tw);
+    reset_variables(tw, compressor, this);
+    descend();
+    pop(tw);
+    return true;
+});
+
+def_reduce_vars(AST_Assign, function(tw, descend, compressor) {
+    var node = this;
+    if (node.left instanceof AST_Destructuring) {
+        suppress(node.left);
+        return;
+    }
+
+    const finish_walk = () => {
+        if (node.logical) {
+            node.left.walk(tw);
+
+            push(tw);
+            node.right.walk(tw);
+            pop(tw);
+
+            return true;
+        }
+    };
+
+    var sym = node.left;
+    if (!(sym instanceof AST_SymbolRef)) return finish_walk();
+
+    var def = sym.definition();
+    var safe = safe_to_assign(tw, def, sym.scope, node.right);
+    def.assignments++;
+    if (!safe) return finish_walk();
+
+    var fixed = def.fixed;
+    if (!fixed && node.operator != "=" && !node.logical) return finish_walk();
+
+    var eq = node.operator == "=";
+    var value = eq ? node.right : node;
+    if (is_modified(compressor, tw, node, value, 0)) return finish_walk();
+
+    def.references.push(sym);
+
+    if (!node.logical) {
+        if (!eq) def.chained = true;
+
+        def.fixed = eq ? function() {
+            return node.right;
+        } : function() {
+            return make_node(AST_Binary, node, {
+                operator: node.operator.slice(0, -1),
+                left: fixed instanceof AST_Node ? fixed : fixed(),
+                right: node.right
+            });
+        };
+    }
+
+    if (node.logical) {
+        mark(tw, def, false);
+        push(tw);
+        node.right.walk(tw);
+        pop(tw);
+        return true;
+    }
+
+    mark(tw, def, false);
+    node.right.walk(tw);
+    mark(tw, def, true);
+
+    mark_escaped(tw, def, sym.scope, node, value, 0, 1);
+
+    return true;
+});
+
+def_reduce_vars(AST_Binary, function(tw) {
+    if (!lazy_op.has(this.operator)) return;
+    this.left.walk(tw);
+    push(tw);
+    this.right.walk(tw);
+    pop(tw);
+    return true;
+});
+
+def_reduce_vars(AST_Block, function(tw, descend, compressor) {
+    reset_block_variables(compressor, this);
+});
+
+def_reduce_vars(AST_Case, function(tw) {
+    push(tw);
+    this.expression.walk(tw);
+    pop(tw);
+    push(tw);
+    walk_body(this, tw);
+    pop(tw);
+    return true;
+});
+
+def_reduce_vars(AST_Class, function(tw, descend) {
+    clear_flag(this, INLINED);
+    push(tw);
+    descend();
+    pop(tw);
+    return true;
+});
+
+def_reduce_vars(AST_ClassStaticBlock, function(tw, descend, compressor) {
+    reset_block_variables(compressor, this);
+});
+
+def_reduce_vars(AST_Conditional, function(tw) {
+    this.condition.walk(tw);
+    push(tw);
+    this.consequent.walk(tw);
+    pop(tw);
+    push(tw);
+    this.alternative.walk(tw);
+    pop(tw);
+    return true;
+});
+
+def_reduce_vars(AST_Chain, function(tw, descend) {
+    // Chains' conditions apply left-to-right, cumulatively.
+    // If we walk normally we don't go in that order because we would pop before pushing again
+    // Solution: AST_PropAccess and AST_Call push when they are optional, and never pop.
+    // Then we pop everything when they are done being walked.
+    const safe_ids = tw.safe_ids;
+
+    descend();
+
+    // Unroll back to start
+    tw.safe_ids = safe_ids;
+    return true;
+});
+
+def_reduce_vars(AST_Call, function (tw) {
+    this.expression.walk(tw);
+
+    if (this.optional) {
+        // Never pop -- it's popped at AST_Chain above
+        push(tw);
+    }
+
+    for (const arg of this.args) arg.walk(tw);
+
+    return true;
+});
+
+def_reduce_vars(AST_PropAccess, function (tw) {
+    if (!this.optional) return;
+
+    this.expression.walk(tw);
+
+    // Never pop -- it's popped at AST_Chain above
+    push(tw);
+
+    if (this.property instanceof AST_Node) this.property.walk(tw);
+
+    return true;
+});
+
+def_reduce_vars(AST_Default, function(tw, descend) {
+    push(tw);
+    descend();
+    pop(tw);
+    return true;
+});
+
+function mark_lambda(tw, descend, compressor) {
+    clear_flag(this, INLINED);
+    push(tw);
+    reset_variables(tw, compressor, this);
+
+    var iife;
+    if (!this.name
+        && !this.uses_arguments
+        && !this.pinned()
+        && (iife = tw.parent()) instanceof AST_Call
+        && iife.expression === this
+        && !iife.args.some(arg => arg instanceof AST_Expansion)
+        && this.argnames.every(arg_name => arg_name instanceof AST_Symbol)
+    ) {
+        // Virtually turn IIFE parameters into variable definitions:
+        //   (function(a,b) {...})(c,d) => (function() {var a=c,b=d; ...})()
+        // So existing transformation rules can work on them.
+        this.argnames.forEach((arg, i) => {
+            if (!arg.definition) return;
+            var d = arg.definition();
+            // Avoid setting fixed when there's more than one origin for a variable value
+            if (d.orig.length > 1) return;
+            if (d.fixed === undefined && (!this.uses_arguments || tw.has_directive("use strict"))) {
+                d.fixed = function() {
+                    return iife.args[i] || make_node(AST_Undefined, iife);
+                };
+                tw.loop_ids.set(d.id, tw.in_loop);
+                mark(tw, d, true);
+            } else {
+                d.fixed = false;
+            }
+        });
+    }
+
+    descend();
+    pop(tw);
+
+    handle_defined_after_hoist(this);
+
+    return true;
+}
+
+/**
+ * It's possible for a hoisted function to use something that's not defined yet. Example:
+ *
+ * hoisted();
+ * var defined_after = true;
+ * function hoisted() {
+ *   // use defined_after
+ * }
+ *
+ * Or even indirectly:
+ *
+ * B();
+ * var defined_after = true;
+ * function A() {
+ *   // use defined_after
+ * }
+ * function B() {
+ *   A();
+ * }
+ *
+ * Access a variable before declaration will either throw a ReferenceError
+ * (if the variable is declared with `let` or `const`),
+ * or get an `undefined` (if the variable is declared with `var`).
+ *
+ * If the variable is inlined into the function, the behavior will change.
+ *
+ * This function is called on the parent to disallow inlining of such variables,
+ */
+function handle_defined_after_hoist(parent) {
+    const defuns = [];
+    walk(parent, node => {
+        if (node === parent) return;
+        if (node instanceof AST_Defun) {
+            defuns.push(node);
+            return true;
+        }
+        if (
+            node instanceof AST_Scope
+            || node instanceof AST_SimpleStatement
+        ) return true;
+    });
+
+    // `defun` id to array of `defun` it uses
+    const defun_dependencies_map = new Map();
+    // `defun` id to array of enclosing `def` that are used by the function
+    const dependencies_map = new Map();
+    // all symbol ids that will be tracked for read/write
+    const symbols_of_interest = new Set();
+    const defuns_of_interest = new Set();
+
+    for (const defun of defuns) {
+        const fname_def = defun.name.definition();
+        const enclosing_defs = [];
+
+        for (const def of defun.enclosed) {
+            if (
+                def.fixed === false
+                || def === fname_def
+                || def.scope.get_defun_scope() !== parent
+            ) {
+                continue;
+            }
+
+            symbols_of_interest.add(def.id);
+
+            // found a reference to another function
+            if (
+                def.assignments === 0
+                && def.orig.length === 1
+                && def.orig[0] instanceof AST_SymbolDefun
+            ) {
+                defuns_of_interest.add(def.id);
+                symbols_of_interest.add(def.id);
+
+                defuns_of_interest.add(fname_def.id);
+                symbols_of_interest.add(fname_def.id);
+
+                if (!defun_dependencies_map.has(fname_def.id)) {
+                    defun_dependencies_map.set(fname_def.id, []);
+                }
+                defun_dependencies_map.get(fname_def.id).push(def.id);
+
+                continue;
+            }
+
+            enclosing_defs.push(def);
+        }
+
+        if (enclosing_defs.length) {
+            dependencies_map.set(fname_def.id, enclosing_defs);
+            defuns_of_interest.add(fname_def.id);
+            symbols_of_interest.add(fname_def.id);
+        }
+    }
+
+    // No defuns use outside constants
+    if (!dependencies_map.size) {
+        return;
+    }
+
+    // Increment to count "symbols of interest" (defuns or defs) that we found.
+    // These are tracked in AST order so we can check which is after which.
+    let symbol_index = 1;
+    // Map a defun ID to its first read (a `symbol_index`)
+    const defun_first_read_map = new Map();
+    // Map a symbol ID to its last write (a `symbol_index`)
+    const symbol_last_write_map = new Map();
+
+    walk_parent(parent, (node, walk_info) => {
+        if (node instanceof AST_Symbol && node.thedef) {
+            const id = node.definition().id;
+
+            symbol_index++;
+
+            // Track last-writes to symbols
+            if (symbols_of_interest.has(id)) {
+                if (node instanceof AST_SymbolDeclaration || is_lhs(node, walk_info.parent())) {
+                    symbol_last_write_map.set(id, symbol_index);
+                }
+            }
+
+            // Track first-reads of defuns (refined later)
+            if (defuns_of_interest.has(id)) {
+                if (!defun_first_read_map.has(id) && !is_recursive_ref(walk_info, id)) {
+                    defun_first_read_map.set(id, symbol_index);
+                }
+            }
+        }
+    });
+
+    // Refine `defun_first_read_map` to be as high as possible
+    for (const [defun, defun_first_read] of defun_first_read_map) {
+        // Update all dependencies of `defun`
+        const queue = new Set(defun_dependencies_map.get(defun));
+        for (const enclosed_defun of queue) {
+            let enclosed_defun_first_read = defun_first_read_map.get(enclosed_defun);
+            if (enclosed_defun_first_read != null && enclosed_defun_first_read < defun_first_read) {
+                continue;
+            }
+
+            defun_first_read_map.set(enclosed_defun, defun_first_read);
+
+            for (const enclosed_enclosed_defun of defun_dependencies_map.get(enclosed_defun) || []) {
+                queue.add(enclosed_enclosed_defun);
+            }
+        }
+    }
+
+    // ensure write-then-read order, otherwise clear `fixed`
+    // This is safe because last-writes (found_symbol_writes) are assumed to be as late as possible, and first-reads (defun_first_read_map) are assumed to be as early as possible.
+    for (const [defun, defs] of dependencies_map) {
+        const defun_first_read = defun_first_read_map.get(defun);
+        if (defun_first_read === undefined) {
+            continue;
+        }
+
+        for (const def of defs) {
+            if (def.fixed === false) {
+                continue;
+            }
+
+            let def_last_write = symbol_last_write_map.get(def.id) || 0;
+
+            if (defun_first_read < def_last_write) {
+                def.fixed = false;
+            }
+        }
+    }
+}
+
+def_reduce_vars(AST_Lambda, mark_lambda);
+
+def_reduce_vars(AST_Do, function(tw, descend, compressor) {
+    reset_block_variables(compressor, this);
+    const saved_loop = tw.in_loop;
+    tw.in_loop = this;
+    push(tw);
+    this.body.walk(tw);
+    if (has_break_or_continue(this)) {
+        pop(tw);
+        push(tw);
+    }
+    this.condition.walk(tw);
+    pop(tw);
+    tw.in_loop = saved_loop;
+    return true;
+});
+
+def_reduce_vars(AST_For, function(tw, descend, compressor) {
+    reset_block_variables(compressor, this);
+    if (this.init) this.init.walk(tw);
+    const saved_loop = tw.in_loop;
+    tw.in_loop = this;
+    push(tw);
+    if (this.condition) this.condition.walk(tw);
+    this.body.walk(tw);
+    if (this.step) {
+        if (has_break_or_continue(this)) {
+            pop(tw);
+            push(tw);
+        }
+        this.step.walk(tw);
+    }
+    pop(tw);
+    tw.in_loop = saved_loop;
+    return true;
+});
+
+def_reduce_vars(AST_ForIn, function(tw, descend, compressor) {
+    reset_block_variables(compressor, this);
+    suppress(this.init);
+    this.object.walk(tw);
+    const saved_loop = tw.in_loop;
+    tw.in_loop = this;
+    push(tw);
+    this.body.walk(tw);
+    pop(tw);
+    tw.in_loop = saved_loop;
+    return true;
+});
+
+def_reduce_vars(AST_If, function(tw) {
+    this.condition.walk(tw);
+    push(tw);
+    this.body.walk(tw);
+    pop(tw);
+    if (this.alternative) {
+        push(tw);
+        this.alternative.walk(tw);
+        pop(tw);
+    }
+    return true;
+});
+
+def_reduce_vars(AST_LabeledStatement, function(tw) {
+    push(tw);
+    this.body.walk(tw);
+    pop(tw);
+    return true;
+});
+
+def_reduce_vars(AST_SymbolCatch, function() {
+    this.definition().fixed = false;
+});
+
+def_reduce_vars(AST_SymbolRef, function(tw, descend, compressor) {
+    var d = this.definition();
+    d.references.push(this);
+    if (d.references.length == 1
+        && !d.fixed
+        && d.orig[0] instanceof AST_SymbolDefun) {
+        tw.loop_ids.set(d.id, tw.in_loop);
+    }
+    var fixed_value;
+    if (d.fixed === undefined || !safe_to_read(tw, d)) {
+        d.fixed = false;
+    } else if (d.fixed) {
+        fixed_value = this.fixed_value();
+        if (
+            fixed_value instanceof AST_Lambda
+            && is_recursive_ref(tw, d)
+        ) {
+            d.recursive_refs++;
+        } else if (fixed_value
+            && !compressor.exposed(d)
+            && ref_once(tw, compressor, d)
+        ) {
+            d.single_use =
+                fixed_value instanceof AST_Lambda && !fixed_value.pinned()
+                || fixed_value instanceof AST_Class
+                || d.scope === this.scope && fixed_value.is_constant_expression();
+        } else {
+            d.single_use = false;
+        }
+        if (is_modified(compressor, tw, this, fixed_value, 0, is_immutable(fixed_value))) {
+            if (d.single_use) {
+                d.single_use = "m";
+            } else {
+                d.fixed = false;
+            }
+        }
+    }
+    mark_escaped(tw, d, this.scope, this, fixed_value, 0, 1);
+});
+
+def_reduce_vars(AST_Toplevel, function(tw, descend, compressor) {
+    this.globals.forEach(function(def) {
+        reset_def(compressor, def);
+    });
+    reset_variables(tw, compressor, this);
+    descend();
+    handle_defined_after_hoist(this);
+    return true;
+});
+
+def_reduce_vars(AST_Try, function(tw, descend, compressor) {
+    reset_block_variables(compressor, this);
+    push(tw);
+    this.body.walk(tw);
+    pop(tw);
+    if (this.bcatch) {
+        push(tw);
+        this.bcatch.walk(tw);
+        pop(tw);
+    }
+    if (this.bfinally) this.bfinally.walk(tw);
+    return true;
+});
+
+def_reduce_vars(AST_Unary, function(tw) {
+    var node = this;
+    if (node.operator !== "++" && node.operator !== "--") return;
+    var exp = node.expression;
+    if (!(exp instanceof AST_SymbolRef)) return;
+    var def = exp.definition();
+    var safe = safe_to_assign(tw, def, exp.scope, true);
+    def.assignments++;
+    if (!safe) return;
+    var fixed = def.fixed;
+    if (!fixed) return;
+    def.references.push(exp);
+    def.chained = true;
+    def.fixed = function() {
+        return make_node(AST_Binary, node, {
+            operator: node.operator.slice(0, -1),
+            left: make_node(AST_UnaryPrefix, node, {
+                operator: "+",
+                expression: fixed instanceof AST_Node ? fixed : fixed()
+            }),
+            right: make_node(AST_Number, node, {
+                value: 1
+            })
+        });
+    };
+    mark(tw, def, true);
+    return true;
+});
+
+def_reduce_vars(AST_VarDef, function(tw, descend) {
+    var node = this;
+    if (node.name instanceof AST_Destructuring) {
+        suppress(node.name);
+        return;
+    }
+    var d = node.name.definition();
+    if (node.value) {
+        if (safe_to_assign(tw, d, node.name.scope, node.value)) {
+            d.fixed = function() {
+                return node.value;
+            };
+            tw.loop_ids.set(d.id, tw.in_loop);
+            mark(tw, d, false);
+            descend();
+            mark(tw, d, true);
+            return true;
+        } else {
+            d.fixed = false;
+        }
+    }
+});
+
+def_reduce_vars(AST_UsingDef, function() {
+    suppress(this.name);
+});
+
+def_reduce_vars(AST_While, function(tw, descend, compressor) {
+    reset_block_variables(compressor, this);
+    const saved_loop = tw.in_loop;
+    tw.in_loop = this;
+    push(tw);
+    descend();
+    pop(tw);
+    tw.in_loop = saved_loop;
+    return true;
+});

node_modules/terser/lib/equivalent-to.js

@@ -0,0 +1,303 @@
+import {
+    AST_Array,
+    AST_Atom,
+    AST_Await,
+    AST_BigInt,
+    AST_Binary,
+    AST_Block,
+    AST_Call,
+    AST_Catch,
+    AST_Chain,
+    AST_Class,
+    AST_ClassProperty,
+    AST_ClassPrivateProperty,
+    AST_ConciseMethod,
+    AST_Conditional,
+    AST_Debugger,
+    AST_DefinitionsLike,
+    AST_Destructuring,
+    AST_Directive,
+    AST_Do,
+    AST_Dot,
+    AST_DotHash,
+    AST_EmptyStatement,
+    AST_Expansion,
+    AST_Export,
+    AST_Finally,
+    AST_For,
+    AST_ForIn,
+    AST_ForOf,
+    AST_If,
+    AST_Import,
+    AST_ImportMeta,
+    AST_Jump,
+    AST_LabeledStatement,
+    AST_Lambda,
+    AST_LoopControl,
+    AST_NameMapping,
+    AST_NewTarget,
+    AST_Node,
+    AST_Number,
+    AST_Object,
+    AST_ObjectGetter,
+    AST_ObjectKeyVal,
+    AST_ObjectProperty,
+    AST_ObjectSetter,
+    AST_PrefixedTemplateString,
+    AST_PrivateIn,
+    AST_PrivateMethod,
+    AST_PropAccess,
+    AST_RegExp,
+    AST_Sequence,
+    AST_SimpleStatement,
+    AST_String,
+    AST_Super,
+    AST_Switch,
+    AST_SwitchBranch,
+    AST_Symbol,
+    AST_TemplateSegment,
+    AST_TemplateString,
+    AST_This,
+    AST_Toplevel,
+    AST_Try,
+    AST_Unary,
+    AST_VarDefLike,
+    AST_While,
+    AST_With,
+    AST_Yield
+} from "./ast.js";
+
+const shallow_cmp = (node1, node2) => {
+    return (
+        node1 === null && node2 === null
+        || node1.TYPE === node2.TYPE && node1.shallow_cmp(node2)
+    );
+};
+
+export const equivalent_to = (tree1, tree2) => {
+    if (!shallow_cmp(tree1, tree2)) return false;
+    const walk_1_state = [tree1];
+    const walk_2_state = [tree2];
+
+    const walk_1_push = walk_1_state.push.bind(walk_1_state);
+    const walk_2_push = walk_2_state.push.bind(walk_2_state);
+
+    while (walk_1_state.length && walk_2_state.length) {
+        const node_1 = walk_1_state.pop();
+        const node_2 = walk_2_state.pop();
+
+        if (!shallow_cmp(node_1, node_2)) return false;
+
+        node_1._children_backwards(walk_1_push);
+        node_2._children_backwards(walk_2_push);
+
+        if (walk_1_state.length !== walk_2_state.length) {
+            // Different number of children
+            return false;
+        }
+    }
+
+    return walk_1_state.length == 0 && walk_2_state.length == 0;
+};
+
+const pass_through = () => true;
+
+AST_Node.prototype.shallow_cmp = function () {
+    throw new Error("did not find a shallow_cmp function for " + this.constructor.name);
+};
+
+AST_Debugger.prototype.shallow_cmp = pass_through;
+
+AST_Directive.prototype.shallow_cmp = function(other) {
+    return this.value === other.value;
+};
+
+AST_SimpleStatement.prototype.shallow_cmp = pass_through;
+
+AST_Block.prototype.shallow_cmp = pass_through;
+
+AST_EmptyStatement.prototype.shallow_cmp = pass_through;
+
+AST_LabeledStatement.prototype.shallow_cmp = function(other) {
+    return this.label.name === other.label.name;
+};
+
+AST_Do.prototype.shallow_cmp = pass_through;
+
+AST_While.prototype.shallow_cmp = pass_through;
+
+AST_For.prototype.shallow_cmp = function(other) {
+    return (this.init == null ? other.init == null : this.init === other.init) && (this.condition == null ? other.condition == null : this.condition === other.condition) && (this.step == null ? other.step == null : this.step === other.step);
+};
+
+AST_ForIn.prototype.shallow_cmp = pass_through;
+
+AST_ForOf.prototype.shallow_cmp = pass_through;
+
+AST_With.prototype.shallow_cmp = pass_through;
+
+AST_Toplevel.prototype.shallow_cmp = pass_through;
+
+AST_Expansion.prototype.shallow_cmp = pass_through;
+
+AST_Lambda.prototype.shallow_cmp = function(other) {
+    return this.is_generator === other.is_generator && this.async === other.async;
+};
+
+AST_Destructuring.prototype.shallow_cmp = function(other) {
+    return this.is_array === other.is_array;
+};
+
+AST_PrefixedTemplateString.prototype.shallow_cmp = pass_through;
+
+AST_TemplateString.prototype.shallow_cmp = pass_through;
+
+AST_TemplateSegment.prototype.shallow_cmp = function(other) {
+    return this.value === other.value;
+};
+
+AST_Jump.prototype.shallow_cmp = pass_through;
+
+AST_LoopControl.prototype.shallow_cmp = pass_through;
+
+AST_Await.prototype.shallow_cmp = pass_through;
+
+AST_Yield.prototype.shallow_cmp = function(other) {
+    return this.is_star === other.is_star;
+};
+
+AST_If.prototype.shallow_cmp = function(other) {
+    return this.alternative == null ? other.alternative == null : this.alternative === other.alternative;
+};
+
+AST_Switch.prototype.shallow_cmp = pass_through;
+
+AST_SwitchBranch.prototype.shallow_cmp = pass_through;
+
+AST_Try.prototype.shallow_cmp = function(other) {
+    return (this.body === other.body) && (this.bcatch == null ? other.bcatch == null : this.bcatch === other.bcatch) && (this.bfinally == null ? other.bfinally == null : this.bfinally === other.bfinally);
+};
+
+AST_Catch.prototype.shallow_cmp = function(other) {
+    return this.argname == null ? other.argname == null : this.argname === other.argname;
+};
+
+AST_Finally.prototype.shallow_cmp = pass_through;
+
+AST_DefinitionsLike.prototype.shallow_cmp = pass_through;
+
+AST_VarDefLike.prototype.shallow_cmp = function(other) {
+    return this.value == null ? other.value == null : this.value === other.value;
+};
+
+AST_NameMapping.prototype.shallow_cmp = pass_through;
+
+AST_Import.prototype.shallow_cmp = function(other) {
+    return (this.imported_name == null ? other.imported_name == null : this.imported_name === other.imported_name) && (this.imported_names == null ? other.imported_names == null : this.imported_names === other.imported_names) && (this.attributes == null ? other.attributes == null : this.attributes === other.attributes);
+};
+
+AST_ImportMeta.prototype.shallow_cmp = pass_through;
+
+AST_Export.prototype.shallow_cmp = function(other) {
+    return (this.exported_definition == null ? other.exported_definition == null : this.exported_definition === other.exported_definition) && (this.exported_value == null ? other.exported_value == null : this.exported_value === other.exported_value) && (this.exported_names == null ? other.exported_names == null : this.exported_names === other.exported_names) && (this.attributes == null ? other.attributes == null : this.attributes === other.attributes) && this.module_name === other.module_name && this.is_default === other.is_default;
+};
+
+AST_Call.prototype.shallow_cmp = pass_through;
+
+AST_Sequence.prototype.shallow_cmp = pass_through;
+
+AST_PropAccess.prototype.shallow_cmp = pass_through;
+
+AST_Chain.prototype.shallow_cmp = pass_through;
+
+AST_Dot.prototype.shallow_cmp = function(other) {
+    return this.property === other.property;
+};
+
+AST_DotHash.prototype.shallow_cmp = function(other) {
+    return this.property === other.property;
+};
+
+AST_Unary.prototype.shallow_cmp = function(other) {
+    return this.operator === other.operator;
+};
+
+AST_Binary.prototype.shallow_cmp = function(other) {
+    return this.operator === other.operator;
+};
+
+AST_PrivateIn.prototype.shallow_cmp = pass_through;
+
+AST_Conditional.prototype.shallow_cmp = pass_through;
+
+AST_Array.prototype.shallow_cmp = pass_through;
+
+AST_Object.prototype.shallow_cmp = pass_through;
+
+AST_ObjectProperty.prototype.shallow_cmp = pass_through;
+
+AST_ObjectKeyVal.prototype.shallow_cmp = function(other) {
+    return this.key === other.key && this.quote === other.quote;
+};
+
+AST_ObjectSetter.prototype.shallow_cmp = function(other) {
+    return this.static === other.static;
+};
+
+AST_ObjectGetter.prototype.shallow_cmp = function(other) {
+    return this.static === other.static;
+};
+
+AST_ConciseMethod.prototype.shallow_cmp = function(other) {
+    return this.static === other.static;
+};
+
+AST_PrivateMethod.prototype.shallow_cmp = function(other) {
+    return this.static === other.static;
+};
+
+AST_Class.prototype.shallow_cmp = function(other) {
+    return (this.name == null ? other.name == null : this.name === other.name) && (this.extends == null ? other.extends == null : this.extends === other.extends);
+};
+
+AST_ClassProperty.prototype.shallow_cmp = function(other) {
+    return this.static === other.static
+        && (typeof this.key === "string"
+            ? this.key === other.key
+            : true /* AST_Node handled elsewhere */);
+};
+
+AST_ClassPrivateProperty.prototype.shallow_cmp = function(other) {
+    return this.static === other.static;
+};
+
+AST_Symbol.prototype.shallow_cmp = function(other) {
+    return this.name === other.name;
+};
+
+AST_NewTarget.prototype.shallow_cmp = pass_through;
+
+AST_This.prototype.shallow_cmp = pass_through;
+
+AST_Super.prototype.shallow_cmp = pass_through;
+
+AST_String.prototype.shallow_cmp = function(other) {
+    return this.value === other.value;
+};
+
+AST_Number.prototype.shallow_cmp = function(other) {
+    return this.value === other.value;
+};
+
+AST_BigInt.prototype.shallow_cmp = function(other) {
+    return this.value === other.value;
+};
+
+AST_RegExp.prototype.shallow_cmp = function (other) {
+    return (
+        this.value.flags === other.value.flags
+        && this.value.source === other.value.source
+    );
+};
+
+AST_Atom.prototype.shallow_cmp = pass_through;

node_modules/terser/lib/minify.js

@@ -0,0 +1,412 @@
+"use strict";
+/* eslint-env browser, es6, node */
+
+import {
+    defaults,
+    map_from_object,
+    map_to_object,
+    HOP,
+} from "./utils/index.js";
+import { AST_Toplevel, AST_Node, walk, AST_Scope } from "./ast.js";
+import { parse } from "./parse.js";
+import { OutputStream } from "./output.js";
+import { Compressor } from "./compress/index.js";
+import { base54 } from "./scope.js";
+import { SourceMap } from "./sourcemap.js";
+import {
+    mangle_properties,
+    mangle_private_properties,
+    reserve_quoted_keys,
+    find_annotated_props,
+} from "./propmangle.js";
+
+// to/from base64 functions
+// Prefer built-in Buffer, if available, then use hack
+// https://developer.mozilla.org/en-US/docs/Glossary/Base64#The_Unicode_Problem
+var to_ascii = typeof Buffer !== "undefined"
+    ? (b64) => Buffer.from(b64, "base64").toString()
+    : (b64) => decodeURIComponent(escape(atob(b64)));
+var to_base64 = typeof Buffer !== "undefined"
+    ? (str) => Buffer.from(str).toString("base64")
+    : (str) => btoa(unescape(encodeURIComponent(str)));
+
+function read_source_map(code) {
+    var match = /(?:^|[^.])\/\/# sourceMappingURL=data:application\/json(;[\w=-]*)?;base64,([+/0-9A-Za-z]*=*)\s*$/.exec(code);
+    if (!match) {
+        console.warn("inline source map not found");
+        return null;
+    }
+    return to_ascii(match[2]);
+}
+
+function set_shorthand(name, options, keys) {
+    if (options[name]) {
+        keys.forEach(function(key) {
+            if (options[key]) {
+                if (typeof options[key] != "object") options[key] = {};
+                if (!(name in options[key])) options[key][name] = options[name];
+            }
+        });
+    }
+}
+
+function init_cache(cache) {
+    if (!cache) return;
+    if (!("props" in cache)) {
+        cache.props = new Map();
+    } else if (!(cache.props instanceof Map)) {
+        cache.props = map_from_object(cache.props);
+    }
+}
+
+function cache_to_json(cache) {
+    return {
+        props: map_to_object(cache.props)
+    };
+}
+
+function log_input(files, options, fs, debug_folder) {
+    if (!(fs && fs.writeFileSync && fs.mkdirSync)) {
+        return;
+    }
+
+    try {
+        fs.mkdirSync(debug_folder);
+    } catch (e) {
+        if (e.code !== "EEXIST") throw e;
+    }
+
+    const log_path = `${debug_folder}/terser-debug-${(Math.random() * 9999999) | 0}.log`;
+
+    options = options || {};
+
+    const options_str = JSON.stringify(options, (_key, thing) => {
+        if (typeof thing === "function") return "[Function " + thing.toString() + "]";
+        if (thing instanceof RegExp) return "[RegExp " + thing.toString() + "]";
+        return thing;
+    }, 4);
+
+    const files_str = (file) => {
+        if (typeof file === "object" && options.parse && options.parse.spidermonkey) {
+            return JSON.stringify(file, null, 2);
+        } else if (typeof file === "object") {
+            return Object.keys(file)
+                .map((key) => key + ": " + files_str(file[key]))
+                .join("\n\n");
+        } else if (typeof file === "string") {
+            return "```\n" + file + "\n```";
+        } else {
+            return file; // What do?
+        }
+    };
+
+    fs.writeFileSync(log_path, "Options: \n" + options_str + "\n\nInput files:\n\n" + files_str(files) + "\n");
+}
+
+function* minify_sync_or_async(files, options, _fs_module) {
+    if (
+        _fs_module
+        && typeof process === "object"
+        && process.env
+        && typeof process.env.TERSER_DEBUG_DIR === "string"
+    ) {
+        log_input(files, options, _fs_module, process.env.TERSER_DEBUG_DIR);
+    }
+
+    options = defaults(options, {
+        compress: {},
+        ecma: undefined,
+        enclose: false,
+        ie8: false,
+        keep_classnames: undefined,
+        keep_fnames: false,
+        mangle: {},
+        module: false,
+        nameCache: null,
+        output: null,
+        format: null,
+        parse: {},
+        rename: undefined,
+        safari10: false,
+        sourceMap: false,
+        spidermonkey: false,
+        timings: false,
+        toplevel: false,
+        warnings: false,
+        wrap: false,
+    }, true);
+
+    var timings = options.timings && {
+        start: Date.now()
+    };
+    if (options.keep_classnames === undefined) {
+        options.keep_classnames = options.keep_fnames;
+    }
+    if (options.rename === undefined) {
+        options.rename = options.compress && options.mangle;
+    }
+    if (options.output && options.format) {
+        throw new Error("Please only specify either output or format option, preferrably format.");
+    }
+    options.format = options.format || options.output || {};
+    set_shorthand("ecma", options, [ "parse", "compress", "format" ]);
+    set_shorthand("ie8", options, [ "compress", "mangle", "format" ]);
+    set_shorthand("keep_classnames", options, [ "compress", "mangle" ]);
+    set_shorthand("keep_fnames", options, [ "compress", "mangle" ]);
+    set_shorthand("module", options, [ "parse", "compress", "mangle" ]);
+    set_shorthand("safari10", options, [ "mangle", "format" ]);
+    set_shorthand("toplevel", options, [ "compress", "mangle" ]);
+    set_shorthand("warnings", options, [ "compress" ]); // legacy
+    var quoted_props;
+    if (options.mangle) {
+        options.mangle = defaults(options.mangle, {
+            cache: options.nameCache && (options.nameCache.vars || {}),
+            eval: false,
+            ie8: false,
+            keep_classnames: false,
+            keep_fnames: false,
+            module: false,
+            nth_identifier: base54,
+            properties: false,
+            reserved: [],
+            safari10: false,
+            toplevel: false,
+        }, true);
+        if (options.mangle.properties) {
+            if (typeof options.mangle.properties != "object") {
+                options.mangle.properties = {};
+            }
+            if (options.mangle.properties.keep_quoted) {
+                quoted_props = options.mangle.properties.reserved;
+                if (!Array.isArray(quoted_props)) quoted_props = [];
+                options.mangle.properties.reserved = quoted_props;
+            }
+            if (options.nameCache && !("cache" in options.mangle.properties)) {
+                options.mangle.properties.cache = options.nameCache.props || {};
+            }
+        }
+        init_cache(options.mangle.cache);
+        init_cache(options.mangle.properties.cache);
+    }
+    if (options.sourceMap) {
+        options.sourceMap = defaults(options.sourceMap, {
+            asObject: false,
+            content: null,
+            filename: null,
+            includeSources: false,
+            root: null,
+            url: null,
+        }, true);
+    }
+
+    // -- Parse phase --
+    if (timings) timings.parse = Date.now();
+    var toplevel;
+    if (files instanceof AST_Toplevel) {
+        toplevel = files;
+    } else {
+        if (typeof files == "string" || (options.parse.spidermonkey && !Array.isArray(files))) {
+            files = [ files ];
+        }
+        options.parse = options.parse || {};
+        options.parse.toplevel = null;
+
+        if (options.parse.spidermonkey) {
+            options.parse.toplevel = AST_Node.from_mozilla_ast(Object.keys(files).reduce(function(toplevel, name) {
+                if (!toplevel) return files[name];
+                toplevel.body = toplevel.body.concat(files[name].body);
+                return toplevel;
+            }, null));
+        } else {
+            delete options.parse.spidermonkey;
+
+            for (var name in files) if (HOP(files, name)) {
+                options.parse.filename = name;
+                options.parse.toplevel = parse(files[name], options.parse);
+                if (options.sourceMap && options.sourceMap.content == "inline") {
+                    if (Object.keys(files).length > 1)
+                        throw new Error("inline source map only works with singular input");
+                    options.sourceMap.content = read_source_map(files[name]);
+                }
+            }
+        }
+        if (options.parse.toplevel === null) {
+            throw new Error("no source file given");
+        }
+
+        toplevel = options.parse.toplevel;
+    }
+    if (quoted_props && options.mangle.properties.keep_quoted !== "strict") {
+        reserve_quoted_keys(toplevel, quoted_props);
+    }
+    var annotated_props;
+    if (options.mangle && options.mangle.properties) {
+        annotated_props = find_annotated_props(toplevel);
+    }
+    if (options.wrap) {
+        toplevel = toplevel.wrap_commonjs(options.wrap);
+    }
+    if (options.enclose) {
+        toplevel = toplevel.wrap_enclose(options.enclose);
+    }
+    if (timings) timings.rename = Date.now();
+    // disable rename on harmony due to expand_names bug in for-of loops
+    // https://github.com/mishoo/UglifyJS2/issues/2794
+    if (0 && options.rename) {
+        toplevel.figure_out_scope(options.mangle);
+        toplevel.expand_names(options.mangle);
+    }
+
+    // -- Compress phase --
+    if (timings) timings.compress = Date.now();
+    if (options.compress) {
+        toplevel = new Compressor(options.compress, {
+            mangle_options: options.mangle
+        }).compress(toplevel);
+    }
+
+    // -- Mangle phase --
+    if (timings) timings.scope = Date.now();
+    if (options.mangle) toplevel.figure_out_scope(options.mangle);
+    if (timings) timings.mangle = Date.now();
+    if (options.mangle) {
+        toplevel.compute_char_frequency(options.mangle);
+        toplevel.mangle_names(options.mangle);
+        toplevel = mangle_private_properties(toplevel, options.mangle);
+    }
+    if (timings) timings.properties = Date.now();
+    if (options.mangle && options.mangle.properties) {
+        toplevel = mangle_properties(toplevel, options.mangle.properties, annotated_props);
+    }
+
+    // Format phase
+    if (timings) timings.format = Date.now();
+    var result = {};
+    if (options.format.ast) {
+        result.ast = toplevel;
+    }
+    if (options.format.spidermonkey) {
+        result.ast = toplevel.to_mozilla_ast();
+    }
+    let format_options;
+    if (!HOP(options.format, "code") || options.format.code) {
+        // Make a shallow copy so that we can modify without mutating the user's input.
+        format_options = {...options.format};
+        if (!format_options.ast) {
+            // Destroy stuff to save RAM. (unless the deprecated `ast` option is on)
+            format_options._destroy_ast = true;
+
+            walk(toplevel, node => {
+                if (node instanceof AST_Scope) {
+                    node.variables = undefined;
+                    node.enclosed = undefined;
+                    node.parent_scope = undefined;
+                }
+                if (node.block_scope) {
+                    node.block_scope.variables = undefined;
+                    node.block_scope.enclosed = undefined;
+                    node.block_scope.parent_scope = undefined;
+                }
+            });
+        }
+
+        if (options.sourceMap) {
+            if (options.sourceMap.includeSources && files instanceof AST_Toplevel) {
+                throw new Error("original source content unavailable");
+            }
+            format_options.source_map = yield* SourceMap({
+                file: options.sourceMap.filename,
+                orig: options.sourceMap.content,
+                root: options.sourceMap.root,
+                files: options.sourceMap.includeSources ? files : null,
+            });
+        }
+        delete format_options.ast;
+        delete format_options.code;
+        delete format_options.spidermonkey;
+        var stream = OutputStream(format_options);
+        toplevel.print(stream);
+        result.code = stream.get();
+        if (options.sourceMap) {
+            Object.defineProperty(result, "map", {
+                configurable: true,
+                enumerable: true,
+                get() {
+                    const map = format_options.source_map.getEncoded();
+                    return (result.map = options.sourceMap.asObject ? map : JSON.stringify(map));
+                },
+                set(value) {
+                    Object.defineProperty(result, "map", {
+                        value,
+                        writable: true,
+                    });
+                }
+            });
+            result.decoded_map = format_options.source_map.getDecoded();
+            if (options.sourceMap.url == "inline") {
+                var sourceMap = typeof result.map === "object" ? JSON.stringify(result.map) : result.map;
+                result.code += "\n//# sourceMappingURL=data:application/json;charset=utf-8;base64," + to_base64(sourceMap);
+            } else if (options.sourceMap.url) {
+                result.code += "\n//# sourceMappingURL=" + options.sourceMap.url;
+            }
+        }
+    }
+    if (options.nameCache && options.mangle) {
+        if (options.mangle.cache) options.nameCache.vars = cache_to_json(options.mangle.cache);
+        if (options.mangle.properties && options.mangle.properties.cache) {
+            options.nameCache.props = cache_to_json(options.mangle.properties.cache);
+        }
+    }
+    if (format_options && format_options.source_map) {
+        format_options.source_map.destroy();
+    }
+    if (timings) {
+        timings.end = Date.now();
+        result.timings = {
+            parse: 1e-3 * (timings.rename - timings.parse),
+            rename: 1e-3 * (timings.compress - timings.rename),
+            compress: 1e-3 * (timings.scope - timings.compress),
+            scope: 1e-3 * (timings.mangle - timings.scope),
+            mangle: 1e-3 * (timings.properties - timings.mangle),
+            properties: 1e-3 * (timings.format - timings.properties),
+            format: 1e-3 * (timings.end - timings.format),
+            total: 1e-3 * (timings.end - timings.start)
+        };
+    }
+    return result;
+}
+
+async function minify(files, options, _fs_module) {
+    const gen = minify_sync_or_async(files, options, _fs_module);
+
+    let yielded;
+    let val;
+    do {
+        val = gen.next(await yielded);
+        yielded = val.value;
+    } while (!val.done);
+
+    return val.value;
+}
+
+function minify_sync(files, options, _fs_module) {
+    const gen = minify_sync_or_async(files, options, _fs_module);
+
+    let yielded;
+    let val;
+    do {
+        if (yielded && typeof yielded.then === "function") {
+            throw new Error("minify_sync cannot be used with the legacy source-map module");
+        }
+        val = gen.next(yielded);
+        yielded = val.value;
+    } while (!val.done);
+
+    return val.value;
+}
+
+export {
+  minify,
+  minify_sync,
+  to_ascii,
+};

node_modules/terser/lib/propmangle.js

@@ -0,0 +1,434 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+/* global global, self */
+
+import {
+    defaults,
+    push_uniq,
+    has_annotation,
+    clear_annotation,
+} from "./utils/index.js";
+import { base54 } from "./scope.js";
+import {
+    AST_Binary,
+    AST_Call,
+    AST_ClassPrivateProperty,
+    AST_Conditional,
+    AST_Dot,
+    AST_DotHash,
+    AST_ObjectKeyVal,
+    AST_ObjectProperty,
+    AST_PrivateMethod,
+    AST_PrivateGetter,
+    AST_PrivateSetter,
+    AST_PrivateIn,
+    AST_Sequence,
+    AST_String,
+    AST_Sub,
+    TreeTransformer,
+    TreeWalker,
+    _KEY,
+    _MANGLEPROP,
+
+    walk,
+} from "./ast.js";
+import { domprops } from "../tools/domprops.js";
+
+function find_builtins(reserved) {
+    domprops.forEach(add);
+
+    // Compatibility fix for some standard defined globals not defined on every js environment
+    var new_globals = ["Symbol", "Map", "Promise", "Proxy", "Reflect", "Set", "WeakMap", "WeakSet"];
+    var objects = {};
+    var global_ref = typeof global === "object" ? global : self;
+
+    new_globals.forEach(function (new_global) {
+        objects[new_global] = global_ref[new_global] || function() {};
+    });
+
+    [
+        "null",
+        "true",
+        "false",
+        "NaN",
+        "Infinity",
+        "-Infinity",
+        "undefined",
+    ].forEach(add);
+    [ Object, Array, Function, Number,
+      String, Boolean, Error, Math,
+      Date, RegExp, objects.Symbol, ArrayBuffer,
+      DataView, decodeURI, decodeURIComponent,
+      encodeURI, encodeURIComponent, eval, EvalError,
+      Float32Array, Float64Array, Int8Array, Int16Array,
+      Int32Array, isFinite, isNaN, JSON, objects.Map, parseFloat,
+      parseInt, objects.Promise, objects.Proxy, RangeError, ReferenceError,
+      objects.Reflect, objects.Set, SyntaxError, TypeError, Uint8Array,
+      Uint8ClampedArray, Uint16Array, Uint32Array, URIError,
+      objects.WeakMap, objects.WeakSet
+    ].forEach(function(ctor) {
+        Object.getOwnPropertyNames(ctor).map(add);
+        if (ctor.prototype) {
+            Object.getOwnPropertyNames(ctor.prototype).map(add);
+        }
+    });
+    function add(name) {
+        reserved.add(name);
+    }
+}
+
+function reserve_quoted_keys(ast, reserved) {
+    function add(name) {
+        push_uniq(reserved, name);
+    }
+
+    ast.walk(new TreeWalker(function(node) {
+        if (node instanceof AST_ObjectKeyVal && node.quote) {
+            add(node.key);
+        } else if (node instanceof AST_ObjectProperty && node.quote) {
+            add(node.key.name);
+        } else if (node instanceof AST_Sub) {
+            addStrings(node.property, add);
+        }
+    }));
+}
+
+function addStrings(node, add) {
+    node.walk(new TreeWalker(function(node) {
+        if (node instanceof AST_Sequence) {
+            addStrings(node.tail_node(), add);
+        } else if (node instanceof AST_String) {
+            add(node.value);
+        } else if (node instanceof AST_Conditional) {
+            addStrings(node.consequent, add);
+            addStrings(node.alternative, add);
+        }
+        return true;
+    }));
+}
+
+function mangle_private_properties(ast, options) {
+    var cprivate = -1;
+    var private_cache = new Map();
+    var nth_identifier = options.nth_identifier || base54;
+
+    ast =  ast.transform(new TreeTransformer(function(node) {
+        if (
+            node instanceof AST_ClassPrivateProperty
+            || node instanceof AST_PrivateMethod
+            || node instanceof AST_PrivateGetter
+            || node instanceof AST_PrivateSetter
+            || node instanceof AST_PrivateIn
+        ) {
+            node.key.name = mangle_private(node.key.name);
+        } else if (node instanceof AST_DotHash) {
+            node.property = mangle_private(node.property);
+        }
+    }));
+    return ast;
+
+    function mangle_private(name) {
+        let mangled = private_cache.get(name);
+        if (!mangled) {
+            mangled = nth_identifier.get(++cprivate);
+            private_cache.set(name, mangled);
+        }
+
+        return mangled;
+    }
+}
+
+function find_annotated_props(ast) {
+    var annotated_props = new Set();
+    walk(ast, node => {
+        if (
+            node instanceof AST_ClassPrivateProperty
+            || node instanceof AST_PrivateMethod
+            || node instanceof AST_PrivateGetter
+            || node instanceof AST_PrivateSetter
+            || node instanceof AST_DotHash
+        ) {
+            // handled by mangle_private_properties
+        } else if (node instanceof AST_ObjectKeyVal) {
+            if (typeof node.key == "string" && has_annotation(node, _MANGLEPROP)) {
+                annotated_props.add(node.key);
+            }
+        } else if (node instanceof AST_ObjectProperty) {
+            // setter or getter, since KeyVal is handled above
+            if (has_annotation(node, _MANGLEPROP)) {
+                annotated_props.add(node.key.name);
+            }
+        } else if (node instanceof AST_Dot) {
+            if (has_annotation(node, _MANGLEPROP)) {
+                annotated_props.add(node.property);
+            }
+        } else if (node instanceof AST_Sub) {
+            if (node.property instanceof AST_String && has_annotation(node, _MANGLEPROP)) {
+                annotated_props.add(node.property.value);
+            }
+        }
+    });
+    return annotated_props;
+}
+
+function mangle_properties(ast, options, annotated_props = find_annotated_props(ast)) {
+    options = defaults(options, {
+        builtins: false,
+        cache: null,
+        debug: false,
+        keep_quoted: false,
+        nth_identifier: base54,
+        only_cache: false,
+        regex: null,
+        reserved: null,
+        undeclared: false,
+        only_annotated: false,
+    }, true);
+
+    var nth_identifier = options.nth_identifier;
+
+    var reserved_option = options.reserved;
+    if (!Array.isArray(reserved_option)) reserved_option = [reserved_option];
+    var reserved = new Set(reserved_option);
+    if (!options.builtins) find_builtins(reserved);
+
+    var cname = -1;
+
+    var cache;
+    if (options.cache) {
+        cache = options.cache.props;
+    } else {
+        cache = new Map();
+    }
+
+    var only_annotated = options.only_annotated;
+    var regex = options.regex && new RegExp(options.regex);
+
+    // note debug is either false (disabled), or a string of the debug suffix to use (enabled).
+    // note debug may be enabled as an empty string, which is falsey. Also treat passing 'true'
+    // the same as passing an empty string.
+    var debug = options.debug !== false;
+    var debug_name_suffix;
+    if (debug) {
+        debug_name_suffix = (options.debug === true ? "" : options.debug);
+    }
+
+    var names_to_mangle = new Set();
+    var unmangleable = new Set();
+    // Track each already-mangled name to prevent nth_identifier from generating
+    // the same name.
+    cache.forEach((mangled_name) => unmangleable.add(mangled_name));
+
+    var keep_quoted = !!options.keep_quoted;
+
+    // step 1: find candidates to mangle
+    ast.walk(new TreeWalker(function(node) {
+        if (
+            node instanceof AST_ClassPrivateProperty
+            || node instanceof AST_PrivateMethod
+            || node instanceof AST_PrivateGetter
+            || node instanceof AST_PrivateSetter
+            || node instanceof AST_DotHash
+        ) {
+            // handled by mangle_private_properties
+        } else if (node instanceof AST_ObjectKeyVal) {
+            if (typeof node.key == "string" && (!keep_quoted || !node.quote)) {
+                add(node.key);
+            }
+        } else if (node instanceof AST_ObjectProperty) {
+            // setter or getter, since KeyVal is handled above
+            if (!keep_quoted || !node.quote) {
+                add(node.key.name);
+            }
+        } else if (node instanceof AST_Dot) {
+            var declared = !!options.undeclared;
+            if (!declared) {
+                var root = node;
+                while (root.expression) {
+                    root = root.expression;
+                }
+                declared = !(root.thedef && root.thedef.undeclared);
+            }
+            if (declared &&
+                (!keep_quoted || !node.quote)) {
+                add(node.property);
+            }
+        } else if (node instanceof AST_Sub) {
+            if (!keep_quoted) {
+                addStrings(node.property, add);
+            }
+        } else if (node instanceof AST_Call
+            && node.expression.print_to_string() == "Object.defineProperty") {
+            addStrings(node.args[1], add);
+        } else if (node instanceof AST_Binary && node.operator === "in") {
+            addStrings(node.left, add);
+        } else if (node instanceof AST_String && has_annotation(node, _KEY)) {
+            add(node.value);
+        }
+    }));
+
+    // step 2: transform the tree, renaming properties
+    return ast.transform(new TreeTransformer(function(node) {
+        if (
+            node instanceof AST_ClassPrivateProperty
+            || node instanceof AST_PrivateMethod
+            || node instanceof AST_PrivateGetter
+            || node instanceof AST_PrivateSetter
+            || node instanceof AST_DotHash
+        ) {
+            // handled by mangle_private_properties
+        } else if (node instanceof AST_ObjectKeyVal) {
+            if (typeof node.key == "string" && (!keep_quoted || !node.quote)) {
+                node.key = mangle(node.key);
+            }
+        } else if (node instanceof AST_ObjectProperty) {
+            // setter, getter, method or class field
+            if (!keep_quoted || !node.quote) {
+                if (!node.computed_key()) {
+                    node.key.name = mangle(node.key.name);
+                }
+            }
+        } else if (node instanceof AST_Dot) {
+            if (!keep_quoted || !node.quote) {
+                node.property = mangle(node.property);
+            }
+        } else if (!keep_quoted && node instanceof AST_Sub) {
+            node.property = mangleStrings(node.property);
+        } else if (node instanceof AST_Call
+            && node.expression.print_to_string() == "Object.defineProperty") {
+            node.args[1] = mangleStrings(node.args[1]);
+        } else if (node instanceof AST_Binary && node.operator === "in") {
+            node.left = mangleStrings(node.left);
+        } else if (node instanceof AST_String && has_annotation(node, _KEY)) {
+            // Clear _KEY annotation to prevent double mangling
+            clear_annotation(node, _KEY);
+            node.value = mangle(node.value);
+        }
+    }));
+
+    // only function declarations after this line
+
+    function can_mangle(name) {
+        if (unmangleable.has(name)) return false;
+        if (reserved.has(name)) return false;
+        if (options.only_cache) {
+            return cache.has(name);
+        }
+        if (/^-?[0-9]+(\.[0-9]+)?(e[+-][0-9]+)?$/.test(name)) return false;
+        return true;
+    }
+
+    function should_mangle(name) {
+        if (only_annotated && !annotated_props.has(name)) return false;
+        if (regex && !regex.test(name)) {
+            return annotated_props.has(name);
+        }
+        if (reserved.has(name)) return false;
+        return cache.has(name)
+            || names_to_mangle.has(name);
+    }
+
+    function add(name) {
+        if (can_mangle(name)) {
+            names_to_mangle.add(name);
+        }
+
+        if (!should_mangle(name)) {
+            unmangleable.add(name);
+        }
+    }
+
+    function mangle(name) {
+        if (!should_mangle(name)) {
+            return name;
+        }
+
+        var mangled = cache.get(name);
+        if (!mangled) {
+            if (debug) {
+                // debug mode: use a prefix and suffix to preserve readability, e.g. o.foo -> o._$foo$NNN_.
+                var debug_mangled = "_$" + name + "$" + debug_name_suffix + "_";
+
+                if (can_mangle(debug_mangled)) {
+                    mangled = debug_mangled;
+                }
+            }
+
+            // either debug mode is off, or it is on and we could not use the mangled name
+            if (!mangled) {
+                do {
+                    mangled = nth_identifier.get(++cname);
+                } while (!can_mangle(mangled));
+            }
+
+            cache.set(name, mangled);
+        }
+        return mangled;
+    }
+
+    function mangleStrings(node) {
+        return node.transform(new TreeTransformer(function(node) {
+            if (node instanceof AST_Sequence) {
+                var last = node.expressions.length - 1;
+                node.expressions[last] = mangleStrings(node.expressions[last]);
+            } else if (node instanceof AST_String) {
+                // Clear _KEY annotation to prevent double mangling
+                clear_annotation(node, _KEY);
+                node.value = mangle(node.value);
+            } else if (node instanceof AST_Conditional) {
+                node.consequent = mangleStrings(node.consequent);
+                node.alternative = mangleStrings(node.alternative);
+            }
+            return node;
+        }));
+    }
+}
+
+export {
+    reserve_quoted_keys,
+    mangle_properties,
+    mangle_private_properties,
+    find_annotated_props,
+};

node_modules/terser/lib/size.js

@@ -0,0 +1,505 @@
+import {
+    AST_Accessor,
+    AST_Array,
+    AST_Arrow,
+    AST_Await,
+    AST_BigInt,
+    AST_Binary,
+    AST_Block,
+    AST_Break,
+    AST_Call,
+    AST_Case,
+    AST_Class,
+    AST_ClassStaticBlock,
+    AST_ClassPrivateProperty,
+    AST_ClassProperty,
+    AST_ConciseMethod,
+    AST_Conditional,
+    AST_Const,
+    AST_Continue,
+    AST_Debugger,
+    AST_Default,
+    AST_Defun,
+    AST_Destructuring,
+    AST_Directive,
+    AST_Do,
+    AST_Dot,
+    AST_DotHash,
+    AST_EmptyStatement,
+    AST_Expansion,
+    AST_Export,
+    AST_False,
+    AST_For,
+    AST_ForIn,
+    AST_Function,
+    AST_Hole,
+    AST_If,
+    AST_Import,
+    AST_ImportMeta,
+    AST_Infinity,
+    AST_LabeledStatement,
+    AST_Let,
+    AST_NameMapping,
+    AST_NaN,
+    AST_New,
+    AST_NewTarget,
+    AST_Node,
+    AST_Null,
+    AST_Number,
+    AST_Object,
+    AST_ObjectKeyVal,
+    AST_ObjectGetter,
+    AST_ObjectSetter,
+    AST_PrivateGetter,
+    AST_PrivateMethod,
+    AST_PrivateSetter,
+    AST_PrivateIn,
+    AST_RegExp,
+    AST_Return,
+    AST_Sequence,
+    AST_String,
+    AST_Sub,
+    AST_Super,
+    AST_Switch,
+    AST_Symbol,
+    AST_SymbolClassProperty,
+    AST_SymbolExportForeign,
+    AST_SymbolImportForeign,
+    AST_SymbolRef,
+    AST_SymbolDeclaration,
+    AST_TemplateSegment,
+    AST_TemplateString,
+    AST_This,
+    AST_Throw,
+    AST_Toplevel,
+    AST_True,
+    AST_Try,
+    AST_Catch,
+    AST_Finally,
+    AST_Unary,
+    AST_Undefined,
+    AST_Using,
+    AST_Var,
+    AST_VarDefLike,
+    AST_While,
+    AST_With,
+    AST_Yield,
+    walk_parent
+} from "./ast.js";
+import { first_in_statement } from "./utils/first_in_statement.js";
+
+let mangle_options = undefined;
+AST_Node.prototype.size = function (compressor, stack) {
+    mangle_options = compressor && compressor._mangle_options;
+
+    let size = 0;
+    walk_parent(this, (node, info) => {
+        size += node._size(info);
+
+        // Braceless arrow functions have fake "return" statements
+        if (node instanceof AST_Arrow && node.is_braceless()) {
+            size += node.body[0].value._size(info);
+            return true;
+        }
+    }, stack || (compressor && compressor.stack));
+
+    // just to save a bit of memory
+    mangle_options = undefined;
+
+    return size;
+};
+
+AST_Node.prototype._size = () => 0;
+
+AST_Debugger.prototype._size = () => 8;
+
+AST_Directive.prototype._size = function () {
+    // TODO string encoding stuff
+    return 2 + this.value.length;
+};
+
+/** Count commas/semicolons necessary to show a list of expressions/statements */
+const list_overhead = (array) => array.length && array.length - 1;
+
+AST_Block.prototype._size = function () {
+    return 2 + list_overhead(this.body);
+};
+
+AST_Toplevel.prototype._size = function() {
+    return list_overhead(this.body);
+};
+
+AST_EmptyStatement.prototype._size = () => 1;
+
+AST_LabeledStatement.prototype._size = () => 2;  // x:
+
+AST_Do.prototype._size = () => 9;
+
+AST_While.prototype._size = () => 7;
+
+AST_For.prototype._size = () => 8;
+
+AST_ForIn.prototype._size = () => 8;
+// AST_ForOf inherits ^
+
+AST_With.prototype._size = () => 6;
+
+AST_Expansion.prototype._size = () => 3;
+
+const lambda_modifiers = func =>
+    (func.is_generator ? 1 : 0) + (func.async ? 6 : 0);
+
+AST_Accessor.prototype._size = function () {
+    return lambda_modifiers(this) + 4 + list_overhead(this.argnames) + list_overhead(this.body);
+};
+
+AST_Function.prototype._size = function (info) {
+    const first = !!first_in_statement(info);
+    return (first * 2) + lambda_modifiers(this) + 12 + list_overhead(this.argnames) + list_overhead(this.body);
+};
+
+AST_Defun.prototype._size = function () {
+    return lambda_modifiers(this) + 13 + list_overhead(this.argnames) + list_overhead(this.body);
+};
+
+AST_Arrow.prototype._size = function () {
+    let args_and_arrow = 2 + list_overhead(this.argnames);
+
+    if (
+        !(
+            this.argnames.length === 1
+            && this.argnames[0] instanceof AST_Symbol
+        )
+    ) {
+        args_and_arrow += 2; // parens around the args
+    }
+
+    const body_overhead = this.is_braceless() ? 0 : list_overhead(this.body) + 2;
+
+    return lambda_modifiers(this) + args_and_arrow + body_overhead;
+};
+
+AST_Destructuring.prototype._size = () => 2;
+
+AST_TemplateString.prototype._size = function () {
+    return 2 + (Math.floor(this.segments.length / 2) * 3);  /* "${}" */
+};
+
+AST_TemplateSegment.prototype._size = function () {
+    return this.value.length;
+};
+
+AST_Return.prototype._size = function () {
+    return this.value ? 7 : 6;
+};
+
+AST_Throw.prototype._size = () => 6;
+
+AST_Break.prototype._size = function () {
+    return this.label ? 6 : 5;
+};
+
+AST_Continue.prototype._size = function () {
+    return this.label ? 9 : 8;
+};
+
+AST_If.prototype._size = () => 4;
+
+AST_Switch.prototype._size = function () {
+    return 8 + list_overhead(this.body);
+};
+
+AST_Case.prototype._size = function () {
+    return 5 + list_overhead(this.body);
+};
+
+AST_Default.prototype._size = function () {
+    return 8 + list_overhead(this.body);
+};
+
+AST_Try.prototype._size = () => 3;
+
+AST_Catch.prototype._size = function () {
+    let size = 7 + list_overhead(this.body);
+    if (this.argname) {
+        size += 2;
+    }
+    return size;
+};
+
+AST_Finally.prototype._size = function () {
+    return 7 + list_overhead(this.body);
+};
+
+AST_Var.prototype._size = function () {
+    return 4 + list_overhead(this.definitions);
+};
+
+AST_Let.prototype._size = function () {
+    return 4 + list_overhead(this.definitions);
+};
+
+AST_Const.prototype._size = function () {
+    return 6 + list_overhead(this.definitions);
+};
+
+AST_Using.prototype._size = function () {
+    const await_size = this.await ? 6 : 0;
+    return await_size + 6 + list_overhead(this.definitions);
+};
+
+AST_VarDefLike.prototype._size = function () {
+    return this.value ? 1 : 0;
+};
+
+AST_NameMapping.prototype._size = function () {
+    // foreign name isn't mangled
+    return this.name ? 4 : 0;
+};
+
+AST_Import.prototype._size = function () {
+    // import
+    let size = 6;
+
+    if (this.imported_name) size += 1;
+
+    // from
+    if (this.imported_name || this.imported_names) size += 5;
+
+    // braces, and the commas
+    if (this.imported_names) {
+        size += 2 + list_overhead(this.imported_names);
+    }
+
+    return size;
+};
+
+AST_ImportMeta.prototype._size = () => 11;
+
+AST_Export.prototype._size = function () {
+    let size = 7 + (this.is_default ? 8 : 0);
+
+    if (this.exported_value) {
+        size += this.exported_value._size();
+    }
+
+    if (this.exported_names) {
+        // Braces and commas
+        size += 2 + list_overhead(this.exported_names);
+    }
+
+    if (this.module_name) {
+        // "from "
+        size += 5;
+    }
+
+    return size;
+};
+
+AST_Call.prototype._size = function () {
+    if (this.optional) {
+        return 4 + list_overhead(this.args);
+    }
+    return 2 + list_overhead(this.args);
+};
+
+AST_New.prototype._size = function () {
+    return 6 + list_overhead(this.args);
+};
+
+AST_Sequence.prototype._size = function () {
+    return list_overhead(this.expressions);
+};
+
+AST_Dot.prototype._size = function () {
+    if (this.optional) {
+        return this.property.length + 2;
+    }
+    return this.property.length + 1;
+};
+
+AST_DotHash.prototype._size = function () {
+    if (this.optional) {
+        return this.property.length + 3;
+    }
+    return this.property.length + 2;
+};
+
+AST_Sub.prototype._size = function () {
+    return this.optional ? 4 : 2;
+};
+
+AST_Unary.prototype._size = function () {
+    if (this.operator === "typeof") return 7;
+    if (this.operator === "void") return 5;
+    return this.operator.length;
+};
+
+AST_Binary.prototype._size = function (info) {
+    if (this.operator === "in") return 4;
+
+    let size = this.operator.length;
+
+    if (
+        (this.operator === "+" || this.operator === "-")
+        && this.right instanceof AST_Unary && this.right.operator === this.operator
+    ) {
+        // 1+ +a > needs space between the +
+        size += 1;
+    }
+
+    if (this.needs_parens(info)) {
+        size += 2;
+    }
+
+    return size;
+};
+
+AST_Conditional.prototype._size = () => 3;
+
+AST_Array.prototype._size = function () {
+    return 2 + list_overhead(this.elements);
+};
+
+AST_Object.prototype._size = function (info) {
+    let base = 2;
+    if (first_in_statement(info)) {
+        base += 2; // parens
+    }
+    return base + list_overhead(this.properties);
+};
+
+/*#__INLINE__*/
+const key_size = key =>
+    typeof key === "string" ? key.length : 0;
+
+AST_ObjectKeyVal.prototype._size = function () {
+    return key_size(this.key) + 1;
+};
+
+/*#__INLINE__*/
+const static_size = is_static => is_static ? 7 : 0;
+
+AST_ObjectGetter.prototype._size = function () {
+    return 5 + static_size(this.static) + key_size(this.key);
+};
+
+AST_ObjectSetter.prototype._size = function () {
+    return 5 + static_size(this.static) + key_size(this.key);
+};
+
+AST_ConciseMethod.prototype._size = function () {
+    return static_size(this.static) + key_size(this.key);
+};
+
+AST_PrivateMethod.prototype._size = function () {
+    return AST_ConciseMethod.prototype._size.call(this) + 1;
+};
+
+AST_PrivateGetter.prototype._size = function () {
+    return AST_ConciseMethod.prototype._size.call(this) + 4;
+};
+
+AST_PrivateSetter.prototype._size = function () {
+    return AST_ConciseMethod.prototype._size.call(this) + 4;
+};
+
+AST_PrivateIn.prototype._size = function () {
+    return 5; // "#", and " in "
+};
+
+AST_Class.prototype._size = function () {
+    return (
+        (this.name ? 8 : 7)
+        + (this.extends ? 8 : 0)
+    );
+};
+
+AST_ClassStaticBlock.prototype._size = function () {
+    // "static{}" + semicolons
+    return 8 + list_overhead(this.body);
+};
+
+AST_ClassProperty.prototype._size = function () {
+    return (
+        static_size(this.static)
+        + (typeof this.key === "string" ? this.key.length + 2 : 0)
+        + (this.value ? 1 : 0)
+    );
+};
+
+AST_ClassPrivateProperty.prototype._size = function () {
+    return AST_ClassProperty.prototype._size.call(this) + 1;
+};
+
+AST_Symbol.prototype._size = function () {
+    if (!(mangle_options && this.thedef && !this.thedef.unmangleable(mangle_options))) {
+        return this.name.length;
+    } else {
+        return 1;
+    }
+};
+
+// TODO take propmangle into account
+AST_SymbolClassProperty.prototype._size = function () {
+    return this.name.length;
+};
+
+AST_SymbolRef.prototype._size = AST_SymbolDeclaration.prototype._size = function () {
+    if (this.name === "arguments") return 9;
+
+    return AST_Symbol.prototype._size.call(this);
+};
+
+AST_NewTarget.prototype._size = () => 10;
+
+AST_SymbolImportForeign.prototype._size = function () {
+    return this.name.length;
+};
+
+AST_SymbolExportForeign.prototype._size = function () {
+    return this.name.length;
+};
+
+AST_This.prototype._size = () => 4;
+
+AST_Super.prototype._size = () => 5;
+
+AST_String.prototype._size = function () {
+    return this.value.length + 2;
+};
+
+AST_Number.prototype._size = function () {
+    const { value } = this;
+    if (value === 0) return 1;
+    if (value > 0 && Math.floor(value) === value) {
+        return Math.floor(Math.log10(value) + 1);
+    }
+    return value.toString().length;
+};
+
+AST_BigInt.prototype._size = function () {
+    return this.value.length;
+};
+
+AST_RegExp.prototype._size = function () {
+    return this.value.toString().length;
+};
+
+AST_Null.prototype._size = () => 4;
+
+AST_NaN.prototype._size = () => 3;
+
+AST_Undefined.prototype._size = () => 6; // "void 0"
+
+AST_Hole.prototype._size = () => 0;  // comma is taken into account by list_overhead()
+
+AST_Infinity.prototype._size = () => 8;
+
+AST_True.prototype._size = () => 4;
+
+AST_False.prototype._size = () => 5;
+
+AST_Await.prototype._size = () => 6;
+
+AST_Yield.prototype._size = () => 6;

node_modules/terser/lib/sourcemap.js

@@ -0,0 +1,148 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+
+import {SourceMapConsumer, SourceMapGenerator} from "@jridgewell/source-map";
+import {defaults, HOP} from "./utils/index.js";
+
+// a small wrapper around source-map and @jridgewell/source-map
+function* SourceMap(options) {
+    options = defaults(options, {
+        file : null,
+        root : null,
+        orig : null,
+        files: {},
+    });
+
+    var orig_map;
+    var generator = new SourceMapGenerator({
+        file       : options.file,
+        sourceRoot : options.root
+    });
+
+    let sourcesContent = {__proto__: null};
+    let files = options.files;
+    for (var name in files) if (HOP(files, name)) {
+        sourcesContent[name] = files[name];
+    }
+    if (options.orig) {
+        // We support both @jridgewell/source-map (which has a sync
+        // SourceMapConsumer) and source-map (which has an async
+        // SourceMapConsumer).
+        orig_map = yield new SourceMapConsumer(options.orig);
+        if (orig_map.sourcesContent) {
+            orig_map.sources.forEach(function(source, i) {
+                var content = orig_map.sourcesContent[i];
+                if (content) {
+                    sourcesContent[source] = content;
+                }
+            });
+        }
+    }
+
+    function add(source, gen_line, gen_col, orig_line, orig_col, name) {
+        let generatedPos = { line: gen_line, column: gen_col };
+
+        if (orig_map) {
+            var info = orig_map.originalPositionFor({
+                line: orig_line,
+                column: orig_col
+            });
+            if (info.source === null) {
+                generator.addMapping({
+                    generated: generatedPos,
+                    original: null,
+                    source: null,
+                    name: null
+                });
+                return;
+            }
+            source = info.source;
+            orig_line = info.line;
+            orig_col = info.column;
+            name = info.name || name;
+        }
+        generator.addMapping({
+            generated : generatedPos,
+            original  : { line: orig_line, column: orig_col },
+            source    : source,
+            name      : name
+        });
+        generator.setSourceContent(source, sourcesContent[source]);
+    }
+
+    function clean(map) {
+        const allNull = map.sourcesContent && map.sourcesContent.every(c => c == null);
+        if (allNull) delete map.sourcesContent;
+        if (map.file === undefined) delete map.file;
+        if (map.sourceRoot === undefined) delete map.sourceRoot;
+        return map;
+    }
+
+    function getDecoded() {
+        if (!generator.toDecodedMap) return null;
+        return clean(generator.toDecodedMap());
+    }
+
+    function getEncoded() {
+        return clean(generator.toJSON());
+    }
+
+    function destroy() {
+        // @jridgewell/source-map's SourceMapConsumer does not need to be
+        // manually freed.
+        if (orig_map && orig_map.destroy) orig_map.destroy();
+    }
+
+    return {
+        add,
+        getDecoded,
+        getEncoded,
+        destroy,
+    };
+}
+
+export {
+    SourceMap,
+};

node_modules/terser/lib/transform.js

@@ -0,0 +1,323 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+
+import {
+    AST_Array,
+    AST_Await,
+    AST_Binary,
+    AST_PrivateIn,
+    AST_Block,
+    AST_Call,
+    AST_Case,
+    AST_Catch,
+    AST_Chain,
+    AST_Class,
+    AST_ClassStaticBlock,
+    AST_Conditional,
+    AST_DefinitionsLike,
+    AST_Destructuring,
+    AST_Do,
+    AST_Exit,
+    AST_Expansion,
+    AST_Export,
+    AST_For,
+    AST_ForIn,
+    AST_If,
+    AST_Import,
+    AST_LabeledStatement,
+    AST_Lambda,
+    AST_LoopControl,
+    AST_NameMapping,
+    AST_Node,
+    AST_Number,
+    AST_Object,
+    AST_ObjectProperty,
+    AST_PrefixedTemplateString,
+    AST_PropAccess,
+    AST_Sequence,
+    AST_SimpleStatement,
+    AST_Sub,
+    AST_Switch,
+    AST_TemplateString,
+    AST_Try,
+    AST_Unary,
+    AST_VarDefLike,
+    AST_While,
+    AST_With,
+    AST_Yield,
+} from "./ast.js";
+import {
+    MAP as do_list,
+    noop,
+} from "./utils/index.js";
+
+function def_transform(node, descend) {
+    node.DEFMETHOD("transform", function(tw, in_list) {
+        let transformed = undefined;
+        tw.push(this);
+        if (tw.before) transformed = tw.before(this, descend, in_list);
+        if (transformed === undefined) {
+            transformed = this;
+            descend(transformed, tw);
+            if (tw.after) {
+                const after_ret = tw.after(transformed, in_list);
+                if (after_ret !== undefined) transformed = after_ret;
+            }
+        }
+        tw.pop();
+        return transformed;
+    });
+}
+
+def_transform(AST_Node, noop);
+
+def_transform(AST_LabeledStatement, function(self, tw) {
+    self.label = self.label.transform(tw);
+    self.body = self.body.transform(tw);
+});
+
+def_transform(AST_SimpleStatement, function(self, tw) {
+    self.body = self.body.transform(tw);
+});
+
+def_transform(AST_Block, function(self, tw) {
+    self.body = do_list(self.body, tw);
+});
+
+def_transform(AST_Do, function(self, tw) {
+    self.body = self.body.transform(tw);
+    self.condition = self.condition.transform(tw);
+});
+
+def_transform(AST_While, function(self, tw) {
+    self.condition = self.condition.transform(tw);
+    self.body = self.body.transform(tw);
+});
+
+def_transform(AST_For, function(self, tw) {
+    if (self.init) self.init = self.init.transform(tw);
+    if (self.condition) self.condition = self.condition.transform(tw);
+    if (self.step) self.step = self.step.transform(tw);
+    self.body = self.body.transform(tw);
+});
+
+def_transform(AST_ForIn, function(self, tw) {
+    self.init = self.init.transform(tw);
+    self.object = self.object.transform(tw);
+    self.body = self.body.transform(tw);
+});
+
+def_transform(AST_With, function(self, tw) {
+    self.expression = self.expression.transform(tw);
+    self.body = self.body.transform(tw);
+});
+
+def_transform(AST_Exit, function(self, tw) {
+    if (self.value) self.value = self.value.transform(tw);
+});
+
+def_transform(AST_LoopControl, function(self, tw) {
+    if (self.label) self.label = self.label.transform(tw);
+});
+
+def_transform(AST_If, function(self, tw) {
+    self.condition = self.condition.transform(tw);
+    self.body = self.body.transform(tw);
+    if (self.alternative) self.alternative = self.alternative.transform(tw);
+});
+
+def_transform(AST_Switch, function(self, tw) {
+    self.expression = self.expression.transform(tw);
+    self.body = do_list(self.body, tw);
+});
+
+def_transform(AST_Case, function(self, tw) {
+    self.expression = self.expression.transform(tw);
+    self.body = do_list(self.body, tw);
+});
+
+def_transform(AST_Try, function(self, tw) {
+    self.body = self.body.transform(tw);
+    if (self.bcatch) self.bcatch = self.bcatch.transform(tw);
+    if (self.bfinally) self.bfinally = self.bfinally.transform(tw);
+});
+
+def_transform(AST_Catch, function(self, tw) {
+    if (self.argname) self.argname = self.argname.transform(tw);
+    self.body = do_list(self.body, tw);
+});
+
+def_transform(AST_DefinitionsLike, function(self, tw) {
+    self.definitions = do_list(self.definitions, tw);
+});
+
+def_transform(AST_VarDefLike, function(self, tw) {
+    self.name = self.name.transform(tw);
+    if (self.value) self.value = self.value.transform(tw);
+});
+
+def_transform(AST_Destructuring, function(self, tw) {
+    self.names = do_list(self.names, tw);
+});
+
+def_transform(AST_Lambda, function(self, tw) {
+    if (self.name) self.name = self.name.transform(tw);
+    self.argnames = do_list(self.argnames, tw, /* allow_splicing */ false);
+    if (self.body instanceof AST_Node) {
+        self.body = self.body.transform(tw);
+    } else {
+        self.body = do_list(self.body, tw);
+    }
+});
+
+def_transform(AST_Call, function(self, tw) {
+    self.expression = self.expression.transform(tw);
+    self.args = do_list(self.args, tw, /* allow_splicing */ false);
+});
+
+def_transform(AST_Sequence, function(self, tw) {
+    const result = do_list(self.expressions, tw);
+    self.expressions = result.length
+        ? result
+        : [new AST_Number({ value: 0 })];
+});
+
+def_transform(AST_PropAccess, function(self, tw) {
+    self.expression = self.expression.transform(tw);
+});
+
+def_transform(AST_Sub, function(self, tw) {
+    self.expression = self.expression.transform(tw);
+    self.property = self.property.transform(tw);
+});
+
+def_transform(AST_Chain, function(self, tw) {
+    self.expression = self.expression.transform(tw);
+});
+
+def_transform(AST_Yield, function(self, tw) {
+    if (self.expression) self.expression = self.expression.transform(tw);
+});
+
+def_transform(AST_Await, function(self, tw) {
+    self.expression = self.expression.transform(tw);
+});
+
+def_transform(AST_Unary, function(self, tw) {
+    self.expression = self.expression.transform(tw);
+});
+
+def_transform(AST_Binary, function(self, tw) {
+    self.left = self.left.transform(tw);
+    self.right = self.right.transform(tw);
+});
+
+def_transform(AST_PrivateIn, function(self, tw) {
+    self.key = self.key.transform(tw);
+    self.value = self.value.transform(tw);
+});
+
+def_transform(AST_Conditional, function(self, tw) {
+    self.condition = self.condition.transform(tw);
+    self.consequent = self.consequent.transform(tw);
+    self.alternative = self.alternative.transform(tw);
+});
+
+def_transform(AST_Array, function(self, tw) {
+    self.elements = do_list(self.elements, tw);
+});
+
+def_transform(AST_Object, function(self, tw) {
+    self.properties = do_list(self.properties, tw);
+});
+
+def_transform(AST_ObjectProperty, function(self, tw) {
+    if (self.key instanceof AST_Node) {
+        self.key = self.key.transform(tw);
+    }
+    if (self.value) self.value = self.value.transform(tw);
+});
+
+def_transform(AST_Class, function(self, tw) {
+    if (self.name) self.name = self.name.transform(tw);
+    if (self.extends) self.extends = self.extends.transform(tw);
+    self.properties = do_list(self.properties, tw);
+});
+
+def_transform(AST_ClassStaticBlock, function(self, tw) {
+    self.body = do_list(self.body, tw);
+});
+
+def_transform(AST_Expansion, function(self, tw) {
+    self.expression = self.expression.transform(tw);
+});
+
+def_transform(AST_NameMapping, function(self, tw) {
+    self.foreign_name = self.foreign_name.transform(tw);
+    self.name = self.name.transform(tw);
+});
+
+def_transform(AST_Import, function(self, tw) {
+    if (self.imported_name) self.imported_name = self.imported_name.transform(tw);
+    if (self.imported_names) do_list(self.imported_names, tw);
+    self.module_name = self.module_name.transform(tw);
+});
+
+def_transform(AST_Export, function(self, tw) {
+    if (self.exported_definition) self.exported_definition = self.exported_definition.transform(tw);
+    if (self.exported_value) self.exported_value = self.exported_value.transform(tw);
+    if (self.exported_names) do_list(self.exported_names, tw);
+    if (self.module_name) self.module_name = self.module_name.transform(tw);
+});
+
+def_transform(AST_TemplateString, function(self, tw) {
+    self.segments = do_list(self.segments, tw);
+});
+
+def_transform(AST_PrefixedTemplateString, function(self, tw) {
+    self.prefix = self.prefix.transform(tw);
+    self.template_string = self.template_string.transform(tw);
+});
+

node_modules/terser/lib/utils/first_in_statement.js

@@ -0,0 +1,53 @@
+import {
+    AST_Binary,
+    AST_Conditional,
+    AST_Chain,
+    AST_Dot,
+    AST_Object,
+    AST_Sequence,
+    AST_Statement,
+    AST_Sub,
+    AST_UnaryPostfix,
+    AST_PrefixedTemplateString
+} from "../ast.js";
+
+// return true if the node at the top of the stack (that means the
+// innermost node in the current output) is lexically the first in
+// a statement.
+function first_in_statement(stack) {
+    let node = stack.parent(-1);
+    for (let i = 0, p; p = stack.parent(i); i++) {
+        if (p instanceof AST_Statement && p.body === node)
+            return true;
+        if ((p instanceof AST_Sequence && p.expressions[0] === node) ||
+            (p.TYPE === "Call" && p.expression === node) ||
+            (p instanceof AST_PrefixedTemplateString && p.prefix === node) ||
+            (p instanceof AST_Dot && p.expression === node) ||
+            (p instanceof AST_Sub && p.expression === node) ||
+            (p instanceof AST_Chain && p.expression === node) ||
+            (p instanceof AST_Conditional && p.condition === node) ||
+            (p instanceof AST_Binary && p.left === node) ||
+            (p instanceof AST_UnaryPostfix && p.expression === node)
+        ) {
+            node = p;
+        } else {
+            return false;
+        }
+    }
+}
+
+// Returns whether the leftmost item in the expression is an object
+function left_is_object(node) {
+    if (node instanceof AST_Object) return true;
+    if (node instanceof AST_Sequence) return left_is_object(node.expressions[0]);
+    if (node.TYPE === "Call") return left_is_object(node.expression);
+    if (node instanceof AST_PrefixedTemplateString) return left_is_object(node.prefix);
+    if (node instanceof AST_Dot || node instanceof AST_Sub) return left_is_object(node.expression);
+    if (node instanceof AST_Chain) return left_is_object(node.expression);
+    if (node instanceof AST_Conditional) return left_is_object(node.condition);
+    if (node instanceof AST_Binary) return left_is_object(node.left);
+    if (node instanceof AST_UnaryPostfix) return left_is_object(node.expression);
+    return false;
+}
+
+export { first_in_statement, left_is_object };

node_modules/terser/lib/utils/index.js

@@ -0,0 +1,295 @@
+/***********************************************************************
+
+  A JavaScript tokenizer / parser / beautifier / compressor.
+  https://github.com/mishoo/UglifyJS2
+
+  -------------------------------- (C) ---------------------------------
+
+                           Author: Mihai Bazon
+                         <mihai.bazon@gmail.com>
+                       http://mihai.bazon.net/blog
+
+  Distributed under the BSD license:
+
+    Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions
+    are met:
+
+        * Redistributions of source code must retain the above
+          copyright notice, this list of conditions and the following
+          disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+          copyright notice, this list of conditions and the following
+          disclaimer in the documentation and/or other materials
+          provided with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
+    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+    PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
+    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+    OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+    PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+    PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+    TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+    THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+    SUCH DAMAGE.
+
+ ***********************************************************************/
+
+"use strict";
+
+import { AST_Node } from "../ast.js";
+
+function characters(str) {
+    return str.split("");
+}
+
+function member(name, array) {
+    return array.includes(name);
+}
+
+class DefaultsError extends Error {
+    constructor(msg, defs) {
+        super();
+
+        this.name = "DefaultsError";
+        this.message = msg;
+        this.defs = defs;
+    }
+}
+
+function defaults(args, defs, croak) {
+    if (args === true) {
+        args = {};
+    } else if (args != null && typeof args === "object") {
+        args = {...args};
+    }
+
+    const ret = args || {};
+
+    if (croak) for (const i in ret) if (HOP(ret, i) && !HOP(defs, i)) {
+        throw new DefaultsError("`" + i + "` is not a supported option", defs);
+    }
+
+    for (const i in defs) if (HOP(defs, i)) {
+        if (!args || !HOP(args, i)) {
+            ret[i] = defs[i];
+        } else if (i === "ecma") {
+            let ecma = args[i] | 0;
+            if (ecma > 5 && ecma < 2015) ecma += 2009;
+            ret[i] = ecma;
+        } else {
+            ret[i] = (args && HOP(args, i)) ? args[i] : defs[i];
+        }
+    }
+
+    return ret;
+}
+
+function noop() {}
+function return_false() { return false; }
+function return_true() { return true; }
+function return_this() { return this; }
+function return_null() { return null; }
+
+var MAP = (function() {
+    function MAP(a, tw, allow_splicing = true) {
+        const new_a = [];
+
+        for (let i = 0; i < a.length; ++i) {
+            let item = a[i];
+            let ret = item.transform(tw, allow_splicing);
+
+            if (ret instanceof AST_Node) {
+                new_a.push(ret);
+            } else if (ret instanceof Splice) {
+                new_a.push(...ret.v);
+            }
+        }
+
+        return new_a;
+    }
+
+    MAP.splice = function(val) { return new Splice(val); };
+    MAP.skip = {};
+    function Splice(val) { this.v = val; }
+    return MAP;
+})();
+
+function make_node(ctor, orig, props) {
+    if (!props) props = {};
+    if (orig) {
+        if (!props.start) props.start = orig.start;
+        if (!props.end) props.end = orig.end;
+    }
+    return new ctor(props);
+}
+
+function push_uniq(array, el) {
+    if (!array.includes(el))
+        array.push(el);
+}
+
+function string_template(text, props) {
+    return text.replace(/{(.+?)}/g, function(str, p) {
+        return props && props[p];
+    });
+}
+
+function remove(array, el) {
+    for (var i = array.length; --i >= 0;) {
+        if (array[i] === el) array.splice(i, 1);
+    }
+}
+
+function mergeSort(array, cmp) {
+    if (array.length < 2) return array.slice();
+    function merge(a, b) {
+        var r = [], ai = 0, bi = 0, i = 0;
+        while (ai < a.length && bi < b.length) {
+            cmp(a[ai], b[bi]) <= 0
+                ? r[i++] = a[ai++]
+                : r[i++] = b[bi++];
+        }
+        if (ai < a.length) r.push.apply(r, a.slice(ai));
+        if (bi < b.length) r.push.apply(r, b.slice(bi));
+        return r;
+    }
+    function _ms(a) {
+        if (a.length <= 1)
+            return a;
+        var m = Math.floor(a.length / 2), left = a.slice(0, m), right = a.slice(m);
+        left = _ms(left);
+        right = _ms(right);
+        return merge(left, right);
+    }
+    return _ms(array);
+}
+
+function makePredicate(words) {
+    if (!Array.isArray(words)) words = words.split(" ");
+
+    return new Set(words.sort());
+}
+
+function map_add(map, key, value) {
+    if (map.has(key)) {
+        map.get(key).push(value);
+    } else {
+        map.set(key, [ value ]);
+    }
+}
+
+function map_from_object(obj) {
+    var map = new Map();
+    for (var key in obj) {
+        if (HOP(obj, key) && key.charAt(0) === "$") {
+            map.set(key.substr(1), obj[key]);
+        }
+    }
+    return map;
+}
+
+function map_to_object(map) {
+    var obj = Object.create(null);
+    map.forEach(function (value, key) {
+        obj["$" + key] = value;
+    });
+    return obj;
+}
+
+function HOP(obj, prop) {
+    return Object.prototype.hasOwnProperty.call(obj, prop);
+}
+
+function keep_name(keep_setting, name) {
+    return keep_setting === true
+        || (keep_setting instanceof RegExp && keep_setting.test(name));
+}
+
+var lineTerminatorEscape = {
+    "\0": "0",
+    "\n": "n",
+    "\r": "r",
+    "\u2028": "u2028",
+    "\u2029": "u2029",
+};
+function regexp_source_fix(source) {
+    // V8 does not escape line terminators in regexp patterns in node 12
+    // We'll also remove literal \0
+    return source.replace(/[\0\n\r\u2028\u2029]/g, function (match, offset) {
+        var escaped = source[offset - 1] == "\\"
+            && (source[offset - 2] != "\\"
+            || /(?:^|[^\\])(?:\\{2})*$/.test(source.slice(0, offset - 1)));
+        return (escaped ? "" : "\\") + lineTerminatorEscape[match];
+    });
+}
+
+// Subset of regexps that is not going to cause regexp based DDOS
+// https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS
+const re_safe_regexp = /^[\\/|\0\s\w^$.[\]()]*$/;
+
+/** Check if the regexp is safe for Terser to create without risking a RegExp DOS */
+export const regexp_is_safe = (source) => re_safe_regexp.test(source);
+
+const all_flags = "dgimsuyv";
+function sort_regexp_flags(flags) {
+    const existing_flags = new Set(flags.split(""));
+    let out = "";
+    for (const flag of all_flags) {
+        if (existing_flags.has(flag)) {
+            out += flag;
+            existing_flags.delete(flag);
+        }
+    }
+    if (existing_flags.size) {
+        // Flags Terser doesn't know about
+        existing_flags.forEach(flag => { out += flag; });
+    }
+    return out;
+}
+
+function has_annotation(node, annotation) {
+    return node._annotations & annotation;
+}
+
+function set_annotation(node, annotation) {
+    node._annotations |= annotation;
+}
+
+function clear_annotation(node, annotation) {
+    node._annotations &= ~annotation;
+}
+
+export {
+    characters,
+    defaults,
+    HOP,
+    keep_name,
+    make_node,
+    makePredicate,
+    map_add,
+    map_from_object,
+    map_to_object,
+    MAP,
+    member,
+    mergeSort,
+    noop,
+    push_uniq,
+    regexp_source_fix,
+    remove,
+    return_false,
+    return_null,
+    return_this,
+    return_true,
+    sort_regexp_flags,
+    string_template,
+    has_annotation,
+    set_annotation,
+    clear_annotation,
+};

node_modules/terser/main.js

@@ -0,0 +1,27 @@
+import "./lib/transform.js";
+import "./lib/mozilla-ast.js";
+import { minify } from "./lib/minify.js";
+
+export { minify, minify_sync } from "./lib/minify.js";
+export { run_cli as _run_cli } from "./lib/cli.js";
+
+export async function _default_options() {
+    const defs = {};
+
+    Object.keys(infer_options({ 0: 0 })).forEach((component) => {
+        const options = infer_options({
+            [component]: {0: 0}
+        });
+
+        if (options) defs[component] = options;
+    });
+    return defs;
+}
+
+async function infer_options(options) {
+    try {
+        await minify("", options);
+    } catch (error) {
+        return error.defs;
+    }
+}

node_modules/terser/node_modules/commander/CHANGELOG.md

@@ -0,0 +1,419 @@
+2.20.3 / 2019-10-11
+==================
+
+  * Support Node.js 0.10 (Revert #1059)
+  * Ran "npm unpublish commander@2.20.2". There is no 2.20.2.
+
+2.20.1 / 2019-09-29
+==================
+
+  * Improve executable subcommand tracking
+  * Update dev dependencies
+
+2.20.0 / 2019-04-02
+==================
+
+  * fix: resolve symbolic links completely when hunting for subcommands (#935)
+  * Update index.d.ts (#930)
+  * Update Readme.md (#924)
+  * Remove --save option as it isn't required anymore (#918)
+  * Add link to the license file (#900)
+  * Added example of receiving args from options (#858)
+  * Added missing semicolon (#882)
+  * Add extension to .eslintrc (#876)
+
+2.19.0 / 2018-10-02
+==================
+
+  * Removed newline after Options and Commands headers (#864)
+  * Bugfix - Error output (#862)
+  * Fix to change default value to string (#856)
+
+2.18.0 / 2018-09-07
+==================
+
+  * Standardize help output (#853)
+  * chmod 644 travis.yml (#851)
+  * add support for execute typescript subcommand via ts-node (#849)
+
+2.17.1 / 2018-08-07
+==================
+
+  * Fix bug in command emit (#844)
+
+2.17.0 / 2018-08-03
+==================
+
+  * fixed newline output after help information (#833)
+  * Fix to emit the action even without command (#778)
+  * npm update (#823)
+
+2.16.0 / 2018-06-29
+==================
+
+  * Remove Makefile and `test/run` (#821)
+  * Make 'npm test' run on Windows (#820)
+  * Add badge to display install size (#807)
+  * chore: cache node_modules (#814)
+  * chore: remove Node.js 4 (EOL), add Node.js 10 (#813)
+  * fixed typo in readme (#812)
+  * Fix types (#804)
+  * Update eslint to resolve vulnerabilities in lodash (#799)
+  * updated readme with custom event listeners. (#791)
+  * fix tests (#794)
+
+2.15.0 / 2018-03-07
+==================
+
+  * Update downloads badge to point to graph of downloads over time instead of duplicating link to npm
+  * Arguments description
+
+2.14.1 / 2018-02-07
+==================
+
+  * Fix typing of help function
+
+2.14.0 / 2018-02-05
+==================
+
+  * only register the option:version event once
+  * Fixes issue #727: Passing empty string for option on command is set to undefined
+  * enable eqeqeq rule
+  * resolves #754 add linter configuration to project
+  * resolves #560 respect custom name for version option
+  * document how to override the version flag
+  * document using options per command
+
+2.13.0 / 2018-01-09
+==================
+
+  * Do not print default for --no-
+  * remove trailing spaces in command help
+  * Update CI's Node.js to LTS and latest version
+  * typedefs: Command and Option types added to commander namespace
+
+2.12.2 / 2017-11-28
+==================
+
+  * fix: typings are not shipped
+
+2.12.1 / 2017-11-23
+==================
+
+  * Move @types/node to dev dependency
+
+2.12.0 / 2017-11-22
+==================
+
+  * add attributeName() method to Option objects
+  * Documentation updated for options with --no prefix
+  * typings: `outputHelp` takes a string as the first parameter
+  * typings: use overloads
+  * feat(typings): update to match js api
+  * Print default value in option help
+  * Fix translation error
+  * Fail when using same command and alias (#491)
+  * feat(typings): add help callback
+  * fix bug when description is add after command with options (#662)
+  * Format js code
+  * Rename History.md to CHANGELOG.md (#668)
+  * feat(typings): add typings to support TypeScript (#646)
+  * use current node
+
+2.11.0 / 2017-07-03
+==================
+
+  * Fix help section order and padding (#652)
+  * feature: support for signals to subcommands (#632)
+  * Fixed #37, --help should not display first (#447)
+  * Fix translation errors. (#570)
+  * Add package-lock.json
+  * Remove engines
+  * Upgrade package version
+  * Prefix events to prevent conflicts between commands and options (#494)
+  * Removing dependency on graceful-readlink
+  * Support setting name in #name function and make it chainable
+  * Add .vscode directory to .gitignore (Visual Studio Code metadata)
+  * Updated link to ruby commander in readme files
+
+2.10.0 / 2017-06-19
+==================
+
+  * Update .travis.yml. drop support for older node.js versions.
+  * Fix require arguments in README.md
+  * On SemVer you do not start from 0.0.1
+  * Add missing semi colon in readme
+  * Add save param to npm install
+  * node v6 travis test
+  * Update Readme_zh-CN.md
+  * Allow literal '--' to be passed-through as an argument
+  * Test subcommand alias help
+  * link build badge to master branch
+  * Support the alias of Git style sub-command
+  * added keyword commander for better search result on npm
+  * Fix Sub-Subcommands
+  * test node.js stable
+  * Fixes TypeError when a command has an option called `--description`
+  * Update README.md to make it beginner friendly and elaborate on the difference between angled and square brackets.
+  * Add chinese Readme file
+
+2.9.0 / 2015-10-13
+==================
+
+  * Add option `isDefault` to set default subcommand #415 @Qix-
+  * Add callback to allow filtering or post-processing of help text #434 @djulien
+  * Fix `undefined` text in help information close #414 #416 @zhiyelee
+
+2.8.1 / 2015-04-22
+==================
+
+ * Back out `support multiline description` Close #396 #397
+
+2.8.0 / 2015-04-07
+==================
+
+  * Add `process.execArg` support, execution args like `--harmony` will be passed to sub-commands #387 @DigitalIO @zhiyelee
+  * Fix bug in Git-style sub-commands #372 @zhiyelee
+  * Allow commands to be hidden from help #383 @tonylukasavage
+  * When git-style sub-commands are in use, yet none are called, display help #382 @claylo
+  * Add ability to specify arguments syntax for top-level command #258 @rrthomas
+  * Support multiline descriptions #208 @zxqfox
+
+2.7.1 / 2015-03-11
+==================
+
+ * Revert #347 (fix collisions when option and first arg have same name) which causes a bug in #367.
+
+2.7.0 / 2015-03-09
+==================
+
+ * Fix git-style bug when installed globally. Close #335 #349 @zhiyelee
+ * Fix collisions when option and first arg have same name. Close #346 #347 @tonylukasavage
+ * Add support for camelCase on `opts()`. Close #353  @nkzawa
+ * Add node.js 0.12 and io.js to travis.yml
+ * Allow RegEx options. #337 @palanik
+ * Fixes exit code when sub-command failing.  Close #260 #332 @pirelenito
+ * git-style `bin` files in $PATH make sense. Close #196 #327  @zhiyelee
+
+2.6.0 / 2014-12-30
+==================
+
+  * added `Command#allowUnknownOption` method. Close #138 #318 @doozr @zhiyelee
+  * Add application description to the help msg. Close #112 @dalssoft
+
+2.5.1 / 2014-12-15
+==================
+
+  * fixed two bugs incurred by variadic arguments. Close #291 @Quentin01 #302 @zhiyelee
+
+2.5.0 / 2014-10-24
+==================
+
+ * add support for variadic arguments. Closes #277 @whitlockjc
+
+2.4.0 / 2014-10-17
+==================
+
+ * fixed a bug on executing the coercion function of subcommands option. Closes #270
+ * added `Command.prototype.name` to retrieve command name. Closes #264 #266 @tonylukasavage
+ * added `Command.prototype.opts` to retrieve all the options as a simple object of key-value pairs. Closes #262 @tonylukasavage
+ * fixed a bug on subcommand name. Closes #248 @jonathandelgado
+ * fixed function normalize doesn’t honor option terminator. Closes #216 @abbr
+
+2.3.0 / 2014-07-16
+==================
+
+ * add command alias'. Closes PR #210
+ * fix: Typos. Closes #99
+ * fix: Unused fs module. Closes #217
+
+2.2.0 / 2014-03-29
+==================
+
+ * add passing of previous option value
+ * fix: support subcommands on windows. Closes #142
+ * Now the defaultValue passed as the second argument of the coercion function.
+
+2.1.0 / 2013-11-21
+==================
+
+ * add: allow cflag style option params, unit test, fixes #174
+
+2.0.0 / 2013-07-18
+==================
+
+ * remove input methods (.prompt, .confirm, etc)
+
+1.3.2 / 2013-07-18
+==================
+
+ * add support for sub-commands to co-exist with the original command
+
+1.3.1 / 2013-07-18
+==================
+
+ * add quick .runningCommand hack so you can opt-out of other logic when running a sub command
+
+1.3.0 / 2013-07-09
+==================
+
+ * add EACCES error handling
+ * fix sub-command --help
+
+1.2.0 / 2013-06-13
+==================
+
+ * allow "-" hyphen as an option argument
+ * support for RegExp coercion
+
+1.1.1 / 2012-11-20
+==================
+
+  * add more sub-command padding
+  * fix .usage() when args are present. Closes #106
+
+1.1.0 / 2012-11-16
+==================
+
+  * add git-style executable subcommand support. Closes #94
+
+1.0.5 / 2012-10-09
+==================
+
+  * fix `--name` clobbering. Closes #92
+  * fix examples/help. Closes #89
+
+1.0.4 / 2012-09-03
+==================
+
+  * add `outputHelp()` method.
+
+1.0.3 / 2012-08-30
+==================
+
+  * remove invalid .version() defaulting
+
+1.0.2 / 2012-08-24
+==================
+
+  * add `--foo=bar` support [arv]
+  * fix password on node 0.8.8. Make backward compatible with 0.6 [focusaurus]
+
+1.0.1 / 2012-08-03
+==================
+
+  * fix issue #56
+  * fix tty.setRawMode(mode) was moved to tty.ReadStream#setRawMode() (i.e. process.stdin.setRawMode())
+
+1.0.0 / 2012-07-05
+==================
+
+  * add support for optional option descriptions
+  * add defaulting of `.version()` to package.json's version
+
+0.6.1 / 2012-06-01
+==================
+
+  * Added: append (yes or no) on confirmation
+  * Added: allow node.js v0.7.x
+
+0.6.0 / 2012-04-10
+==================
+
+  * Added `.prompt(obj, callback)` support. Closes #49
+  * Added default support to .choose(). Closes #41
+  * Fixed the choice example
+
+0.5.1 / 2011-12-20
+==================
+
+  * Fixed `password()` for recent nodes. Closes #36
+
+0.5.0 / 2011-12-04
+==================
+
+  * Added sub-command option support [itay]
+
+0.4.3 / 2011-12-04
+==================
+
+  * Fixed custom help ordering. Closes #32
+
+0.4.2 / 2011-11-24
+==================
+
+  * Added travis support
+  * Fixed: line-buffered input automatically trimmed. Closes #31
+
+0.4.1 / 2011-11-18
+==================
+
+  * Removed listening for "close" on --help
+
+0.4.0 / 2011-11-15
+==================
+
+  * Added support for `--`. Closes #24
+
+0.3.3 / 2011-11-14
+==================
+
+  * Fixed: wait for close event when writing help info [Jerry Hamlet]
+
+0.3.2 / 2011-11-01
+==================
+
+  * Fixed long flag definitions with values [felixge]
+
+0.3.1 / 2011-10-31
+==================
+
+  * Changed `--version` short flag to `-V` from `-v`
+  * Changed `.version()` so it's configurable [felixge]
+
+0.3.0 / 2011-10-31
+==================
+
+  * Added support for long flags only. Closes #18
+
+0.2.1 / 2011-10-24
+==================
+
+  * "node": ">= 0.4.x < 0.7.0". Closes #20
+
+0.2.0 / 2011-09-26
+==================
+
+  * Allow for defaults that are not just boolean. Default peassignment only occurs for --no-*, optional, and required arguments. [Jim Isaacs]
+
+0.1.0 / 2011-08-24
+==================
+
+  * Added support for custom `--help` output
+
+0.0.5 / 2011-08-18
+==================
+
+  * Changed: when the user enters nothing prompt for password again
+  * Fixed issue with passwords beginning with numbers [NuckChorris]
+
+0.0.4 / 2011-08-15
+==================
+
+  * Fixed `Commander#args`
+
+0.0.3 / 2011-08-15
+==================
+
+  * Added default option value support
+
+0.0.2 / 2011-08-15
+==================
+
+  * Added mask support to `Command#password(str[, mask], fn)`
+  * Added `Command#password(str, fn)`
+
+0.0.1 / 2010-01-03
+==================
+
+  * Initial release

node_modules/terser/node_modules/commander/LICENSE

@@ -0,0 +1,22 @@
+(The MIT License)
+
+Copyright (c) 2011 TJ Holowaychuk <tj@vision-media.ca>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

node_modules/terser/node_modules/commander/Readme.md

@@ -0,0 +1,428 @@
+# Commander.js
+
+
+[![Build Status](https://api.travis-ci.org/tj/commander.js.svg?branch=master)](http://travis-ci.org/tj/commander.js)
+[![NPM Version](http://img.shields.io/npm/v/commander.svg?style=flat)](https://www.npmjs.org/package/commander)
+[![NPM Downloads](https://img.shields.io/npm/dm/commander.svg?style=flat)](https://npmcharts.com/compare/commander?minimal=true)
+[![Install Size](https://packagephobia.now.sh/badge?p=commander)](https://packagephobia.now.sh/result?p=commander)
+[![Join the chat at https://gitter.im/tj/commander.js](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/tj/commander.js?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
+  The complete solution for [node.js](http://nodejs.org) command-line interfaces, inspired by Ruby's [commander](https://github.com/commander-rb/commander).  
+  [API documentation](http://tj.github.com/commander.js/)
+
+
+## Installation
+
+    $ npm install commander
+
+## Option parsing
+
+Options with commander are defined with the `.option()` method, also serving as documentation for the options. The example below parses args and options from `process.argv`, leaving remaining args as the `program.args` array which were not consumed by options.
+
+```js
+#!/usr/bin/env node
+
+/**
+ * Module dependencies.
+ */
+
+var program = require('commander');
+
+program
+  .version('0.1.0')
+  .option('-p, --peppers', 'Add peppers')
+  .option('-P, --pineapple', 'Add pineapple')
+  .option('-b, --bbq-sauce', 'Add bbq sauce')
+  .option('-c, --cheese [type]', 'Add the specified type of cheese [marble]', 'marble')
+  .parse(process.argv);
+
+console.log('you ordered a pizza with:');
+if (program.peppers) console.log('  - peppers');
+if (program.pineapple) console.log('  - pineapple');
+if (program.bbqSauce) console.log('  - bbq');
+console.log('  - %s cheese', program.cheese);
+```
+
+Short flags may be passed as a single arg, for example `-abc` is equivalent to `-a -b -c`. Multi-word options such as "--template-engine" are camel-cased, becoming `program.templateEngine` etc.
+
+Note that multi-word options starting with `--no` prefix negate the boolean value of the following word. For example, `--no-sauce` sets the value of `program.sauce` to false.
+
+```js
+#!/usr/bin/env node
+
+/**
+ * Module dependencies.
+ */
+
+var program = require('commander');
+
+program
+  .option('--no-sauce', 'Remove sauce')
+  .parse(process.argv);
+
+console.log('you ordered a pizza');
+if (program.sauce) console.log('  with sauce');
+else console.log(' without sauce');
+```
+
+To get string arguments from options you will need to use angle brackets <> for required inputs or square brackets [] for optional inputs. 
+
+e.g. ```.option('-m --myarg [myVar]', 'my super cool description')```
+
+Then to access the input if it was passed in.
+
+e.g. ```var myInput = program.myarg```
+
+**NOTE**: If you pass a argument without using brackets the example above will return true and not the value passed in.
+
+
+## Version option
+
+Calling the `version` implicitly adds the `-V` and `--version` options to the command.
+When either of these options is present, the command prints the version number and exits.
+
+    $ ./examples/pizza -V
+    0.0.1
+
+If you want your program to respond to the `-v` option instead of the `-V` option, simply pass custom flags to the `version` method using the same syntax as the `option` method.
+
+```js
+program
+  .version('0.0.1', '-v, --version')
+```
+
+The version flags can be named anything, but the long option is required.
+
+## Command-specific options
+
+You can attach options to a command.
+
+```js
+#!/usr/bin/env node
+
+var program = require('commander');
+
+program
+  .command('rm <dir>')
+  .option('-r, --recursive', 'Remove recursively')
+  .action(function (dir, cmd) {
+    console.log('remove ' + dir + (cmd.recursive ? ' recursively' : ''))
+  })
+
+program.parse(process.argv)
+```
+
+A command's options are validated when the command is used. Any unknown options will be reported as an error. However, if an action-based command does not define an action, then the options are not validated.
+
+## Coercion
+
+```js
+function range(val) {
+  return val.split('..').map(Number);
+}
+
+function list(val) {
+  return val.split(',');
+}
+
+function collect(val, memo) {
+  memo.push(val);
+  return memo;
+}
+
+function increaseVerbosity(v, total) {
+  return total + 1;
+}
+
+program
+  .version('0.1.0')
+  .usage('[options] <file ...>')
+  .option('-i, --integer <n>', 'An integer argument', parseInt)
+  .option('-f, --float <n>', 'A float argument', parseFloat)
+  .option('-r, --range <a>..<b>', 'A range', range)
+  .option('-l, --list <items>', 'A list', list)
+  .option('-o, --optional [value]', 'An optional value')
+  .option('-c, --collect [value]', 'A repeatable value', collect, [])
+  .option('-v, --verbose', 'A value that can be increased', increaseVerbosity, 0)
+  .parse(process.argv);
+
+console.log(' int: %j', program.integer);
+console.log(' float: %j', program.float);
+console.log(' optional: %j', program.optional);
+program.range = program.range || [];
+console.log(' range: %j..%j', program.range[0], program.range[1]);
+console.log(' list: %j', program.list);
+console.log(' collect: %j', program.collect);
+console.log(' verbosity: %j', program.verbose);
+console.log(' args: %j', program.args);
+```
+
+## Regular Expression
+```js
+program
+  .version('0.1.0')
+  .option('-s --size <size>', 'Pizza size', /^(large|medium|small)$/i, 'medium')
+  .option('-d --drink [drink]', 'Drink', /^(coke|pepsi|izze)$/i)
+  .parse(process.argv);
+
+console.log(' size: %j', program.size);
+console.log(' drink: %j', program.drink);
+```
+
+## Variadic arguments
+
+ The last argument of a command can be variadic, and only the last argument.  To make an argument variadic you have to
+ append `...` to the argument name.  Here is an example:
+
+```js
+#!/usr/bin/env node
+
+/**
+ * Module dependencies.
+ */
+
+var program = require('commander');
+
+program
+  .version('0.1.0')
+  .command('rmdir <dir> [otherDirs...]')
+  .action(function (dir, otherDirs) {
+    console.log('rmdir %s', dir);
+    if (otherDirs) {
+      otherDirs.forEach(function (oDir) {
+        console.log('rmdir %s', oDir);
+      });
+    }
+  });
+
+program.parse(process.argv);
+```
+
+ An `Array` is used for the value of a variadic argument.  This applies to `program.args` as well as the argument passed
+ to your action as demonstrated above.
+
+## Specify the argument syntax
+
+```js
+#!/usr/bin/env node
+
+var program = require('commander');
+
+program
+  .version('0.1.0')
+  .arguments('<cmd> [env]')
+  .action(function (cmd, env) {
+     cmdValue = cmd;
+     envValue = env;
+  });
+
+program.parse(process.argv);
+
+if (typeof cmdValue === 'undefined') {
+   console.error('no command given!');
+   process.exit(1);
+}
+console.log('command:', cmdValue);
+console.log('environment:', envValue || "no environment given");
+```
+Angled brackets (e.g. `<cmd>`) indicate required input. Square brackets (e.g. `[env]`) indicate optional input.
+
+## Git-style sub-commands
+
+```js
+// file: ./examples/pm
+var program = require('commander');
+
+program
+  .version('0.1.0')
+  .command('install [name]', 'install one or more packages')
+  .command('search [query]', 'search with optional query')
+  .command('list', 'list packages installed', {isDefault: true})
+  .parse(process.argv);
+```
+
+When `.command()` is invoked with a description argument, no `.action(callback)` should be called to handle sub-commands, otherwise there will be an error. This tells commander that you're going to use separate executables for sub-commands, much like `git(1)` and other popular tools.  
+The commander will try to search the executables in the directory of the entry script (like `./examples/pm`) with the name `program-command`, like `pm-install`, `pm-search`.
+
+Options can be passed with the call to `.command()`. Specifying `true` for `opts.noHelp` will remove the subcommand from the generated help output. Specifying `true` for `opts.isDefault` will run the subcommand if no other subcommand is specified.
+
+If the program is designed to be installed globally, make sure the executables have proper modes, like `755`.
+
+### `--harmony`
+
+You can enable `--harmony` option in two ways:
+* Use `#! /usr/bin/env node --harmony` in the sub-commands scripts. Note some os version don’t support this pattern.
+* Use the `--harmony` option when call the command, like `node --harmony examples/pm publish`. The `--harmony` option will be preserved when spawning sub-command process.
+
+## Automated --help
+
+ The help information is auto-generated based on the information commander already knows about your program, so the following `--help` info is for free:
+
+```  
+$ ./examples/pizza --help
+Usage: pizza [options]
+
+An application for pizzas ordering
+
+Options:
+  -h, --help           output usage information
+  -V, --version        output the version number
+  -p, --peppers        Add peppers
+  -P, --pineapple      Add pineapple
+  -b, --bbq            Add bbq sauce
+  -c, --cheese <type>  Add the specified type of cheese [marble]
+  -C, --no-cheese      You do not want any cheese
+```
+
+## Custom help
+
+ You can display arbitrary `-h, --help` information
+ by listening for "--help". Commander will automatically
+ exit once you are done so that the remainder of your program
+ does not execute causing undesired behaviors, for example
+ in the following executable "stuff" will not output when
+ `--help` is used.
+
+```js
+#!/usr/bin/env node
+
+/**
+ * Module dependencies.
+ */
+
+var program = require('commander');
+
+program
+  .version('0.1.0')
+  .option('-f, --foo', 'enable some foo')
+  .option('-b, --bar', 'enable some bar')
+  .option('-B, --baz', 'enable some baz');
+
+// must be before .parse() since
+// node's emit() is immediate
+
+program.on('--help', function(){
+  console.log('')
+  console.log('Examples:');
+  console.log('  $ custom-help --help');
+  console.log('  $ custom-help -h');
+});
+
+program.parse(process.argv);
+
+console.log('stuff');
+```
+
+Yields the following help output when `node script-name.js -h` or `node script-name.js --help` are run:
+
+```
+Usage: custom-help [options]
+
+Options:
+  -h, --help     output usage information
+  -V, --version  output the version number
+  -f, --foo      enable some foo
+  -b, --bar      enable some bar
+  -B, --baz      enable some baz
+
+Examples:
+  $ custom-help --help
+  $ custom-help -h
+```
+
+## .outputHelp(cb)
+
+Output help information without exiting.
+Optional callback cb allows post-processing of help text before it is displayed.
+
+If you want to display help by default (e.g. if no command was provided), you can use something like:
+
+```js
+var program = require('commander');
+var colors = require('colors');
+
+program
+  .version('0.1.0')
+  .command('getstream [url]', 'get stream URL')
+  .parse(process.argv);
+
+if (!process.argv.slice(2).length) {
+  program.outputHelp(make_red);
+}
+
+function make_red(txt) {
+  return colors.red(txt); //display the help text in red on the console
+}
+```
+
+## .help(cb)
+
+  Output help information and exit immediately.
+  Optional callback cb allows post-processing of help text before it is displayed.
+
+
+## Custom event listeners
+ You can execute custom actions by listening to command and option events.
+
+```js
+program.on('option:verbose', function () {
+  process.env.VERBOSE = this.verbose;
+});
+
+// error on unknown commands
+program.on('command:*', function () {
+  console.error('Invalid command: %s\nSee --help for a list of available commands.', program.args.join(' '));
+  process.exit(1);
+});
+```
+
+## Examples
+
+```js
+var program = require('commander');
+
+program
+  .version('0.1.0')
+  .option('-C, --chdir <path>', 'change the working directory')
+  .option('-c, --config <path>', 'set config path. defaults to ./deploy.conf')
+  .option('-T, --no-tests', 'ignore test hook');
+
+program
+  .command('setup [env]')
+  .description('run setup commands for all envs')
+  .option("-s, --setup_mode [mode]", "Which setup mode to use")
+  .action(function(env, options){
+    var mode = options.setup_mode || "normal";
+    env = env || 'all';
+    console.log('setup for %s env(s) with %s mode', env, mode);
+  });
+
+program
+  .command('exec <cmd>')
+  .alias('ex')
+  .description('execute the given remote cmd')
+  .option("-e, --exec_mode <mode>", "Which exec mode to use")
+  .action(function(cmd, options){
+    console.log('exec "%s" using %s mode', cmd, options.exec_mode);
+  }).on('--help', function() {
+    console.log('');
+    console.log('Examples:');
+    console.log('');
+    console.log('  $ deploy exec sequential');
+    console.log('  $ deploy exec async');
+  });
+
+program
+  .command('*')
+  .action(function(env){
+    console.log('deploying "%s"', env);
+  });
+
+program.parse(process.argv);
+```
+
+More Demos can be found in the [examples](https://github.com/tj/commander.js/tree/master/examples) directory.
+
+## License
+
+[MIT](https://github.com/tj/commander.js/blob/master/LICENSE)

node_modules/terser/node_modules/commander/package.json

@@ -0,0 +1,38 @@
+{
+  "name": "commander",
+  "version": "2.20.3",
+  "description": "the complete solution for node.js command-line programs",
+  "keywords": [
+    "commander",
+    "command",
+    "option",
+    "parser"
+  ],
+  "author": "TJ Holowaychuk <tj@vision-media.ca>",
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/tj/commander.js.git"
+  },
+  "scripts": {
+    "lint": "eslint index.js",
+    "test": "node test/run.js && npm run test-typings",
+    "test-typings": "tsc -p tsconfig.json"
+  },
+  "main": "index",
+  "files": [
+    "index.js",
+    "typings/index.d.ts"
+  ],
+  "dependencies": {},
+  "devDependencies": {
+    "@types/node": "^12.7.8",
+    "eslint": "^6.4.0",
+    "should": "^13.2.3",
+    "sinon": "^7.5.0",
+    "standard": "^14.3.1",
+    "ts-node": "^8.4.1",
+    "typescript": "^3.6.3"
+  },
+  "typings": "typings/index.d.ts"
+}

node_modules/terser/node_modules/commander/typings/index.d.ts

@@ -0,0 +1,310 @@
+// Type definitions for commander 2.11
+// Project: https://github.com/visionmedia/commander.js
+// Definitions by: Alan Agius <https://github.com/alan-agius4>, Marcelo Dezem <https://github.com/mdezem>, vvakame <https://github.com/vvakame>, Jules Randolph <https://github.com/sveinburne>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare namespace local {
+
+  class Option {
+    flags: string;
+    required: boolean;
+    optional: boolean;
+    bool: boolean;
+    short?: string;
+    long: string;
+    description: string;
+
+    /**
+     * Initialize a new `Option` with the given `flags` and `description`.
+     *
+     * @param {string} flags
+     * @param {string} [description]
+     */
+    constructor(flags: string, description?: string);
+  }
+
+  class Command extends NodeJS.EventEmitter {
+    [key: string]: any;
+
+    args: string[];
+
+    /**
+     * Initialize a new `Command`.
+     *
+     * @param {string} [name]
+     */
+    constructor(name?: string);
+
+    /**
+     * Set the program version to `str`.
+     *
+     * This method auto-registers the "-V, --version" flag
+     * which will print the version number when passed.
+     *
+     * @param {string} str
+     * @param {string} [flags]
+     * @returns {Command} for chaining
+     */
+    version(str: string, flags?: string): Command;
+
+    /**
+     * Add command `name`.
+     *
+     * The `.action()` callback is invoked when the
+     * command `name` is specified via __ARGV__,
+     * and the remaining arguments are applied to the
+     * function for access.
+     *
+     * When the `name` is "*" an un-matched command
+     * will be passed as the first arg, followed by
+     * the rest of __ARGV__ remaining.
+     *
+     * @example
+     *      program
+     *        .version('0.0.1')
+     *        .option('-C, --chdir <path>', 'change the working directory')
+     *        .option('-c, --config <path>', 'set config path. defaults to ./deploy.conf')
+     *        .option('-T, --no-tests', 'ignore test hook')
+     *
+     *      program
+     *        .command('setup')
+     *        .description('run remote setup commands')
+     *        .action(function() {
+     *          console.log('setup');
+     *        });
+     *
+     *      program
+     *        .command('exec <cmd>')
+     *        .description('run the given remote command')
+     *        .action(function(cmd) {
+     *          console.log('exec "%s"', cmd);
+     *        });
+     *
+     *      program
+     *        .command('teardown <dir> [otherDirs...]')
+     *        .description('run teardown commands')
+     *        .action(function(dir, otherDirs) {
+     *          console.log('dir "%s"', dir);
+     *          if (otherDirs) {
+     *            otherDirs.forEach(function (oDir) {
+     *              console.log('dir "%s"', oDir);
+     *            });
+     *          }
+     *        });
+     *
+     *      program
+     *        .command('*')
+     *        .description('deploy the given env')
+     *        .action(function(env) {
+     *          console.log('deploying "%s"', env);
+     *        });
+     *
+     *      program.parse(process.argv);
+     *
+     * @param {string} name
+     * @param {string} [desc] for git-style sub-commands
+     * @param {CommandOptions} [opts] command options
+     * @returns {Command} the new command
+     */
+    command(name: string, desc?: string, opts?: commander.CommandOptions): Command;
+
+    /**
+     * Define argument syntax for the top-level command.
+     *
+     * @param {string} desc
+     * @returns {Command} for chaining
+     */
+    arguments(desc: string): Command;
+
+    /**
+     * Parse expected `args`.
+     *
+     * For example `["[type]"]` becomes `[{ required: false, name: 'type' }]`.
+     *
+     * @param {string[]} args
+     * @returns {Command} for chaining
+     */
+    parseExpectedArgs(args: string[]): Command;
+
+    /**
+     * Register callback `fn` for the command.
+     *
+     * @example
+     *      program
+     *        .command('help')
+     *        .description('display verbose help')
+     *        .action(function() {
+     *           // output help here
+     *        });
+     *
+     * @param {(...args: any[]) => void} fn
+     * @returns {Command} for chaining
+     */
+    action(fn: (...args: any[]) => void): Command;
+
+    /**
+     * Define option with `flags`, `description` and optional
+     * coercion `fn`.
+     *
+     * The `flags` string should contain both the short and long flags,
+     * separated by comma, a pipe or space. The following are all valid
+     * all will output this way when `--help` is used.
+     *
+     *    "-p, --pepper"
+     *    "-p|--pepper"
+     *    "-p --pepper"
+     *
+     * @example
+     *     // simple boolean defaulting to false
+     *     program.option('-p, --pepper', 'add pepper');
+     *
+     *     --pepper
+     *     program.pepper
+     *     // => Boolean
+     *
+     *     // simple boolean defaulting to true
+     *     program.option('-C, --no-cheese', 'remove cheese');
+     *
+     *     program.cheese
+     *     // => true
+     *
+     *     --no-cheese
+     *     program.cheese
+     *     // => false
+     *
+     *     // required argument
+     *     program.option('-C, --chdir <path>', 'change the working directory');
+     *
+     *     --chdir /tmp
+     *     program.chdir
+     *     // => "/tmp"
+     *
+     *     // optional argument
+     *     program.option('-c, --cheese [type]', 'add cheese [marble]');
+     *
+     * @param {string} flags
+     * @param {string} [description]
+     * @param {((arg1: any, arg2: any) => void) | RegExp} [fn] function or default
+     * @param {*} [defaultValue]
+     * @returns {Command} for chaining
+     */
+    option(flags: string, description?: string, fn?: ((arg1: any, arg2: any) => void) | RegExp, defaultValue?: any): Command;
+    option(flags: string, description?: string, defaultValue?: any): Command;
+
+    /**
+     * Allow unknown options on the command line.
+     *
+     * @param {boolean} [arg] if `true` or omitted, no error will be thrown for unknown options.
+     * @returns {Command} for chaining
+     */
+    allowUnknownOption(arg?: boolean): Command;
+
+    /**
+     * Parse `argv`, settings options and invoking commands when defined.
+     *
+     * @param {string[]} argv
+     * @returns {Command} for chaining
+     */
+    parse(argv: string[]): Command;
+
+    /**
+     * Parse options from `argv` returning `argv` void of these options.
+     *
+     * @param {string[]} argv
+     * @returns {ParseOptionsResult}
+     */
+    parseOptions(argv: string[]): commander.ParseOptionsResult;
+
+    /**
+     * Return an object containing options as key-value pairs
+     *
+     * @returns {{[key: string]: any}}
+     */
+    opts(): { [key: string]: any };
+
+    /**
+     * Set the description to `str`.
+     *
+     * @param {string} str
+     * @param {{[argName: string]: string}} argsDescription
+     * @return {(Command | string)}
+     */
+    description(str: string, argsDescription?: {[argName: string]: string}): Command;
+    description(): string;
+
+    /**
+     * Set an alias for the command.
+     *
+     * @param {string} alias
+     * @return {(Command | string)}
+     */
+    alias(alias: string): Command;
+    alias(): string;
+
+    /**
+     * Set or get the command usage.
+     *
+     * @param {string} str
+     * @return {(Command | string)}
+     */
+    usage(str: string): Command;
+    usage(): string;
+
+    /**
+     * Set the name of the command.
+     *
+     * @param {string} str
+     * @return {Command}
+     */
+    name(str: string): Command;
+
+    /**
+     * Get the name of the command.
+     *
+     * @return {string}
+     */
+    name(): string;
+
+    /**
+     * Output help information for this command.
+     *
+     * @param {(str: string) => string} [cb]
+     */
+    outputHelp(cb?: (str: string) => string): void;
+
+    /** Output help information and exit.
+     *
+     * @param {(str: string) => string} [cb]
+     */
+    help(cb?: (str: string) => string): never;
+  }
+
+}
+
+declare namespace commander {
+
+    type Command = local.Command
+
+    type Option = local.Option
+
+    interface CommandOptions {
+        noHelp?: boolean;
+        isDefault?: boolean;
+    }
+
+    interface ParseOptionsResult {
+        args: string[];
+        unknown: string[];
+    }
+
+    interface CommanderStatic extends Command {
+        Command: typeof local.Command;
+        Option: typeof local.Option;
+        CommandOptions: CommandOptions;
+        ParseOptionsResult: ParseOptionsResult;
+    }
+
+}
+
+declare const commander: commander.CommanderStatic;
+export = commander;

node_modules/terser/node_modules/source-map-support/LICENSE.md

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Evan Wallace
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

node_modules/terser/node_modules/source-map-support/README.md

@@ -0,0 +1,284 @@
+# Source Map Support
+[![Build Status](https://travis-ci.org/evanw/node-source-map-support.svg?branch=master)](https://travis-ci.org/evanw/node-source-map-support)
+
+This module provides source map support for stack traces in node via the [V8 stack trace API](https://github.com/v8/v8/wiki/Stack-Trace-API). It uses the [source-map](https://github.com/mozilla/source-map) module to replace the paths and line numbers of source-mapped files with their original paths and line numbers. The output mimics node's stack trace format with the goal of making every compile-to-JS language more of a first-class citizen. Source maps are completely general (not specific to any one language) so you can use source maps with multiple compile-to-JS languages in the same node process.
+
+## Installation and Usage
+
+#### Node support
+
+```
+$ npm install source-map-support
+```
+
+Source maps can be generated using libraries such as [source-map-index-generator](https://github.com/twolfson/source-map-index-generator). Once you have a valid source map, place a source mapping comment somewhere in the file (usually done automatically or with an option by your transpiler):
+
+```
+//# sourceMappingURL=path/to/source.map
+```
+
+If multiple sourceMappingURL comments exist in one file, the last sourceMappingURL comment will be
+respected (e.g. if a file mentions the comment in code, or went through multiple transpilers).
+The path should either be absolute or relative to the compiled file.
+
+From here you have two options.
+
+##### CLI Usage
+
+```bash
+node -r source-map-support/register compiled.js
+```
+
+##### Programmatic Usage
+
+Put the following line at the top of the compiled file.
+
+```js
+require('source-map-support').install();
+```
+
+It is also possible to install the source map support directly by
+requiring the `register` module which can be handy with ES6:
+
+```js
+import 'source-map-support/register'
+
+// Instead of:
+import sourceMapSupport from 'source-map-support'
+sourceMapSupport.install()
+```
+Note: if you're using babel-register, it includes source-map-support already.
+
+It is also very useful with Mocha:
+
+```
+$ mocha --require source-map-support/register tests/
+```
+
+#### Browser support
+
+This library also works in Chrome. While the DevTools console already supports source maps, the V8 engine doesn't and `Error.prototype.stack` will be incorrect without this library. Everything will just work if you deploy your source files using [browserify](http://browserify.org/). Just make sure to pass the `--debug` flag to the browserify command so your source maps are included in the bundled code.
+
+This library also works if you use another build process or just include the source files directly. In this case, include the file `browser-source-map-support.js` in your page and call `sourceMapSupport.install()`. It contains the whole library already bundled for the browser using browserify.
+
+```html
+<script src="browser-source-map-support.js"></script>
+<script>sourceMapSupport.install();</script>
+```
+
+This library also works if you use AMD (Asynchronous Module Definition), which is used in tools like [RequireJS](http://requirejs.org/). Just list `browser-source-map-support` as a dependency:
+
+```html
+<script>
+  define(['browser-source-map-support'], function(sourceMapSupport) {
+    sourceMapSupport.install();
+  });
+</script>
+```
+
+## Options
+
+This module installs two things: a change to the `stack` property on `Error` objects and a handler for uncaught exceptions that mimics node's default exception handler (the handler can be seen in the demos below). You may want to disable the handler if you have your own uncaught exception handler. This can be done by passing an argument to the installer:
+
+```js
+require('source-map-support').install({
+  handleUncaughtExceptions: false
+});
+```
+
+This module loads source maps from the filesystem by default. You can provide alternate loading behavior through a callback as shown below. For example, [Meteor](https://github.com/meteor) keeps all source maps cached in memory to avoid disk access.
+
+```js
+require('source-map-support').install({
+  retrieveSourceMap: function(source) {
+    if (source === 'compiled.js') {
+      return {
+        url: 'original.js',
+        map: fs.readFileSync('compiled.js.map', 'utf8')
+      };
+    }
+    return null;
+  }
+});
+```
+
+The module will by default assume a browser environment if XMLHttpRequest and window are defined. If either of these do not exist it will instead assume a node environment.
+In some rare cases, e.g. when running a browser emulation and where both variables are also set, you can explictly specify the environment to be either 'browser' or 'node'.
+
+```js
+require('source-map-support').install({
+  environment: 'node'
+});
+```
+
+To support files with inline source maps, the `hookRequire` options can be specified, which will monitor all source files for inline source maps.
+
+
+```js
+require('source-map-support').install({
+  hookRequire: true
+});
+```
+
+This monkey patches the `require` module loading chain, so is not enabled by default and is not recommended for any sort of production usage.
+
+## Demos
+
+#### Basic Demo
+
+original.js:
+
+```js
+throw new Error('test'); // This is the original code
+```
+
+compiled.js:
+
+```js
+require('source-map-support').install();
+
+throw new Error('test'); // This is the compiled code
+// The next line defines the sourceMapping.
+//# sourceMappingURL=compiled.js.map
+```
+
+compiled.js.map:
+
+```json
+{
+  "version": 3,
+  "file": "compiled.js",
+  "sources": ["original.js"],
+  "names": [],
+  "mappings": ";;AAAA,MAAM,IAAI"
+}
+```
+
+Run compiled.js using node (notice how the stack trace uses original.js instead of compiled.js):
+
+```
+$ node compiled.js
+
+original.js:1
+throw new Error('test'); // This is the original code
+      ^
+Error: test
+    at Object.<anonymous> (original.js:1:7)
+    at Module._compile (module.js:456:26)
+    at Object.Module._extensions..js (module.js:474:10)
+    at Module.load (module.js:356:32)
+    at Function.Module._load (module.js:312:12)
+    at Function.Module.runMain (module.js:497:10)
+    at startup (node.js:119:16)
+    at node.js:901:3
+```
+
+#### TypeScript Demo
+
+demo.ts:
+
+```typescript
+declare function require(name: string);
+require('source-map-support').install();
+class Foo {
+  constructor() { this.bar(); }
+  bar() { throw new Error('this is a demo'); }
+}
+new Foo();
+```
+
+Compile and run the file using the TypeScript compiler from the terminal:
+
+```
+$ npm install source-map-support typescript
+$ node_modules/typescript/bin/tsc -sourcemap demo.ts
+$ node demo.js
+
+demo.ts:5
+  bar() { throw new Error('this is a demo'); }
+                ^
+Error: this is a demo
+    at Foo.bar (demo.ts:5:17)
+    at new Foo (demo.ts:4:24)
+    at Object.<anonymous> (demo.ts:7:1)
+    at Module._compile (module.js:456:26)
+    at Object.Module._extensions..js (module.js:474:10)
+    at Module.load (module.js:356:32)
+    at Function.Module._load (module.js:312:12)
+    at Function.Module.runMain (module.js:497:10)
+    at startup (node.js:119:16)
+    at node.js:901:3
+```
+
+There is also the option to use `-r source-map-support/register` with typescript, without the need add the `require('source-map-support').install()` in the code base:
+
+```
+$ npm install source-map-support typescript
+$ node_modules/typescript/bin/tsc  -sourcemap demo.ts
+$ node -r source-map-support/register demo.js
+
+demo.ts:5
+  bar() { throw new Error('this is a demo'); }
+                ^
+Error: this is a demo
+    at Foo.bar (demo.ts:5:17)
+    at new Foo (demo.ts:4:24)
+    at Object.<anonymous> (demo.ts:7:1)
+    at Module._compile (module.js:456:26)
+    at Object.Module._extensions..js (module.js:474:10)
+    at Module.load (module.js:356:32)
+    at Function.Module._load (module.js:312:12)
+    at Function.Module.runMain (module.js:497:10)
+    at startup (node.js:119:16)
+    at node.js:901:3
+```
+
+#### CoffeeScript Demo
+
+demo.coffee:
+
+```coffee
+require('source-map-support').install()
+foo = ->
+  bar = -> throw new Error 'this is a demo'
+  bar()
+foo()
+```
+
+Compile and run the file using the CoffeeScript compiler from the terminal:
+
+```sh
+$ npm install source-map-support coffeescript
+$ node_modules/.bin/coffee --map --compile demo.coffee
+$ node demo.js
+
+demo.coffee:3
+  bar = -> throw new Error 'this is a demo'
+                     ^
+Error: this is a demo
+    at bar (demo.coffee:3:22)
+    at foo (demo.coffee:4:3)
+    at Object.<anonymous> (demo.coffee:5:1)
+    at Object.<anonymous> (demo.coffee:1:1)
+    at Module._compile (module.js:456:26)
+    at Object.Module._extensions..js (module.js:474:10)
+    at Module.load (module.js:356:32)
+    at Function.Module._load (module.js:312:12)
+    at Function.Module.runMain (module.js:497:10)
+    at startup (node.js:119:16)
+```
+
+## Tests
+
+This repo contains both automated tests for node and manual tests for the browser. The automated tests can be run using mocha (type `mocha` in the root directory). To run the manual tests:
+
+* Build the tests using `build.js`
+* Launch the HTTP server (`npm run serve-tests`) and visit
+  * http://127.0.0.1:1336/amd-test
+  * http://127.0.0.1:1336/browser-test
+  * http://127.0.0.1:1336/browserify-test - **Currently not working** due to a bug with browserify (see [pull request #66](https://github.com/evanw/node-source-map-support/pull/66) for details).
+* For `header-test`, run `server.js` inside that directory and visit http://127.0.0.1:1337/
+
+## License
+
+This code is available under the [MIT license](http://opensource.org/licenses/MIT).

node_modules/terser/node_modules/source-map-support/browser-source-map-support.js

@@ -0,0 +1,114 @@
+/*
+ * Support for source maps in V8 stack traces
+ * https://github.com/evanw/node-source-map-support
+ */
+/*
+ The buffer module from node.js, for the browser.
+
+ @author   Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
+ license  MIT
+*/
+(this.define||function(R,U){this.sourceMapSupport=U()})("browser-source-map-support",function(R){(function e(C,J,A){function p(f,c){if(!J[f]){if(!C[f]){var l="function"==typeof require&&require;if(!c&&l)return l(f,!0);if(t)return t(f,!0);throw Error("Cannot find module '"+f+"'");}l=J[f]={exports:{}};C[f][0].call(l.exports,function(q){var r=C[f][1][q];return p(r?r:q)},l,l.exports,e,C,J,A)}return J[f].exports}for(var t="function"==typeof require&&require,m=0;m<A.length;m++)p(A[m]);return p})({1:[function(C,
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+m);t-=q}return(u?-1:1)*c*Math.pow(2,t-m)};A.write=function(e,p,t,m,f,c){var l,q=8*c-f-1,r=(1<<q)-1,k=r>>1,u=23===f?Math.pow(2,-24)-Math.pow(2,-77):0;c=m?0:c-1;var d=m?1:-1,g=0>p||0===p&&0>1/p?1:0;p=Math.abs(p);isNaN(p)||Infinity===p?(p=isNaN(p)?1:0,m=r):(m=Math.floor(Math.log(p)/Math.LN2),1>p*(l=Math.pow(2,-m))&&(m--,l*=2),p=1<=m+k?p+u/l:p+u*Math.pow(2,1-k),2<=p*l&&(m++,l/=2),m+k>=r?(p=0,m=r):1<=m+k?(p=(p*l-1)*Math.pow(2,f),m+=k):(p=p*Math.pow(2,k-1)*Math.pow(2,f),m=0));for(;8<=f;e[t+c]=p&255,c+=
+d,p/=256,f-=8);m=m<<f|p;for(q+=f;0<q;e[t+c]=m&255,c+=d,m/=256,q-=8);e[t+c-d]|=128*g}},{}],7:[function(C,J,A){var e=Object.prototype.toString;J.exports=Array.isArray||function(p){return!!p&&"[object Array]"==e.call(p)}},{}],8:[function(C,J,A){(function(e){function p(c,l){for(var q=0,r=c.length-1;0<=r;r--){var k=c[r];"."===k?c.splice(r,1):".."===k?(c.splice(r,1),q++):q&&(c.splice(r,1),q--)}if(l)for(;q--;q)c.unshift("..");return c}function t(c,l){if(c.filter)return c.filter(l);for(var q=[],r=0;r<c.length;r++)l(c[r],
+r,c)&&q.push(c[r]);return q}var m=/^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;A.resolve=function(){for(var c="",l=!1,q=arguments.length-1;-1<=q&&!l;q--){var r=0<=q?arguments[q]:e.cwd();if("string"!==typeof r)throw new TypeError("Arguments to path.resolve must be strings");r&&(c=r+"/"+c,l="/"===r.charAt(0))}c=p(t(c.split("/"),function(k){return!!k}),!l).join("/");return(l?"/":"")+c||"."};A.normalize=function(c){var l=A.isAbsolute(c),q="/"===f(c,-1);(c=p(t(c.split("/"),function(r){return!!r}),
+!l).join("/"))||l||(c=".");c&&q&&(c+="/");return(l?"/":"")+c};A.isAbsolute=function(c){return"/"===c.charAt(0)};A.join=function(){var c=Array.prototype.slice.call(arguments,0);return A.normalize(t(c,function(l,q){if("string"!==typeof l)throw new TypeError("Arguments to path.join must be strings");return l}).join("/"))};A.relative=function(c,l){function q(n){for(var v=0;v<n.length&&""===n[v];v++);for(var z=n.length-1;0<=z&&""===n[z];z--);return v>z?[]:n.slice(v,z-v+1)}c=A.resolve(c).substr(1);l=A.resolve(l).substr(1);
+for(var r=q(c.split("/")),k=q(l.split("/")),u=Math.min(r.length,k.length),d=u,g=0;g<u;g++)if(r[g]!==k[g]){d=g;break}u=[];for(g=d;g<r.length;g++)u.push("..");u=u.concat(k.slice(d));return u.join("/")};A.sep="/";A.delimiter=":";A.dirname=function(c){var l=m.exec(c).slice(1);c=l[0];l=l[1];if(!c&&!l)return".";l&&(l=l.substr(0,l.length-1));return c+l};A.basename=function(c,l){var q=m.exec(c).slice(1)[2];l&&q.substr(-1*l.length)===l&&(q=q.substr(0,q.length-l.length));return q};A.extname=function(c){return m.exec(c).slice(1)[3]};
+var f="b"==="ab".substr(-1)?function(c,l,q){return c.substr(l,q)}:function(c,l,q){0>l&&(l=c.length+l);return c.substr(l,q)}}).call(this,C("g5I+bs"))},{"g5I+bs":9}],9:[function(C,J,A){function e(){}C=J.exports={};C.nextTick=function(){if("undefined"!==typeof window&&window.setImmediate)return function(t){return window.setImmediate(t)};if("undefined"!==typeof window&&window.postMessage&&window.addEventListener){var p=[];window.addEventListener("message",function(t){var m=t.source;m!==window&&null!==
+m||"process-tick"!==t.data||(t.stopPropagation(),0<p.length&&p.shift()())},!0);return function(t){p.push(t);window.postMessage("process-tick","*")}}return function(t){setTimeout(t,0)}}();C.title="browser";C.browser=!0;C.env={};C.argv=[];C.on=e;C.addListener=e;C.once=e;C.off=e;C.removeListener=e;C.removeAllListeners=e;C.emit=e;C.binding=function(p){throw Error("process.binding is not supported");};C.cwd=function(){return"/"};C.chdir=function(p){throw Error("process.chdir is not supported");}},{}],
+10:[function(C,J,A){function e(){this._array=[];this._set=m?new Map:Object.create(null)}var p=C("./util"),t=Object.prototype.hasOwnProperty,m="undefined"!==typeof Map;e.fromArray=function(f,c){for(var l=new e,q=0,r=f.length;q<r;q++)l.add(f[q],c);return l};e.prototype.size=function(){return m?this._set.size:Object.getOwnPropertyNames(this._set).length};e.prototype.add=function(f,c){var l=m?f:p.toSetString(f),q=m?this.has(f):t.call(this._set,l),r=this._array.length;q&&!c||this._array.push(f);q||(m?
+this._set.set(f,r):this._set[l]=r)};e.prototype.has=function(f){if(m)return this._set.has(f);f=p.toSetString(f);return t.call(this._set,f)};e.prototype.indexOf=function(f){if(m){var c=this._set.get(f);if(0<=c)return c}else if(c=p.toSetString(f),t.call(this._set,c))return this._set[c];throw Error('"'+f+'" is not in the set.');};e.prototype.at=function(f){if(0<=f&&f<this._array.length)return this._array[f];throw Error("No element indexed by "+f);};e.prototype.toArray=function(){return this._array.slice()};
+A.ArraySet=e},{"./util":19}],11:[function(C,J,A){var e=C("./base64");A.encode=function(p){var t="",m=0>p?(-p<<1)+1:p<<1;do p=m&31,m>>>=5,0<m&&(p|=32),t+=e.encode(p);while(0<m);return t};A.decode=function(p,t,m){var f=p.length,c=0,l=0;do{if(t>=f)throw Error("Expected more digits in base 64 VLQ value.");var q=e.decode(p.charCodeAt(t++));if(-1===q)throw Error("Invalid base64 digit: "+p.charAt(t-1));var r=!!(q&32);q&=31;c+=q<<l;l+=5}while(r);p=c>>1;m.value=1===(c&1)?-p:p;m.rest=t}},{"./base64":12}],12:[function(C,
+J,A){var e="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".split("");A.encode=function(p){if(0<=p&&p<e.length)return e[p];throw new TypeError("Must be between 0 and 63: "+p);};A.decode=function(p){return 65<=p&&90>=p?p-65:97<=p&&122>=p?p-97+26:48<=p&&57>=p?p-48+52:43==p?62:47==p?63:-1}},{}],13:[function(C,J,A){function e(p,t,m,f,c,l){var q=Math.floor((t-p)/2)+p,r=c(m,f[q],!0);return 0===r?q:0<r?1<t-q?e(q,t,m,f,c,l):l==A.LEAST_UPPER_BOUND?t<f.length?t:-1:q:1<q-p?e(p,q,m,f,c,l):l==
+A.LEAST_UPPER_BOUND?q:0>p?-1:p}A.GREATEST_LOWER_BOUND=1;A.LEAST_UPPER_BOUND=2;A.search=function(p,t,m,f){if(0===t.length)return-1;p=e(-1,t.length,p,t,m,f||A.GREATEST_LOWER_BOUND);if(0>p)return-1;for(;0<=p-1&&0===m(t[p],t[p-1],!0);)--p;return p}},{}],14:[function(C,J,A){function e(){this._array=[];this._sorted=!0;this._last={generatedLine:-1,generatedColumn:0}}var p=C("./util");e.prototype.unsortedForEach=function(t,m){this._array.forEach(t,m)};e.prototype.add=function(t){var m=this._last,f=m.generatedLine,
+c=t.generatedLine,l=m.generatedColumn,q=t.generatedColumn;c>f||c==f&&q>=l||0>=p.compareByGeneratedPositionsInflated(m,t)?this._last=t:this._sorted=!1;this._array.push(t)};e.prototype.toArray=function(){this._sorted||(this._array.sort(p.compareByGeneratedPositionsInflated),this._sorted=!0);return this._array};A.MappingList=e},{"./util":19}],15:[function(C,J,A){function e(t,m,f){var c=t[m];t[m]=t[f];t[f]=c}function p(t,m,f,c){if(f<c){var l=f-1;e(t,Math.round(f+Math.random()*(c-f)),c);for(var q=t[c],
+r=f;r<c;r++)0>=m(t[r],q)&&(l+=1,e(t,l,r));e(t,l+1,r);l+=1;p(t,m,f,l-1);p(t,m,l+1,c)}}A.quickSort=function(t,m){p(t,m,0,t.length-1)}},{}],16:[function(C,J,A){function e(k,u){var d=k;"string"===typeof k&&(d=f.parseSourceMapInput(k));return null!=d.sections?new m(d,u):new p(d,u)}function p(k,u){var d=k;"string"===typeof k&&(d=f.parseSourceMapInput(k));var g=f.getArg(d,"version"),n=f.getArg(d,"sources"),v=f.getArg(d,"names",[]),z=f.getArg(d,"sourceRoot",null),G=f.getArg(d,"sourcesContent",null),D=f.getArg(d,
+"mappings");d=f.getArg(d,"file",null);if(g!=this._version)throw Error("Unsupported version: "+g);z&&(z=f.normalize(z));n=n.map(String).map(f.normalize).map(function(L){return z&&f.isAbsolute(z)&&f.isAbsolute(L)?f.relative(z,L):L});this._names=l.fromArray(v.map(String),!0);this._sources=l.fromArray(n,!0);this.sourceRoot=z;this.sourcesContent=G;this._mappings=D;this._sourceMapURL=u;this.file=d}function t(){this.generatedColumn=this.generatedLine=0;this.name=this.originalColumn=this.originalLine=this.source=
+null}function m(k,u){var d=k;"string"===typeof k&&(d=f.parseSourceMapInput(k));var g=f.getArg(d,"version");d=f.getArg(d,"sections");if(g!=this._version)throw Error("Unsupported version: "+g);this._sources=new l;this._names=new l;var n={line:-1,column:0};this._sections=d.map(function(v){if(v.url)throw Error("Support for url field in sections not implemented.");var z=f.getArg(v,"offset"),G=f.getArg(z,"line"),D=f.getArg(z,"column");if(G<n.line||G===n.line&&D<n.column)throw Error("Section offsets must be ordered and non-overlapping.");
+n=z;return{generatedOffset:{generatedLine:G+1,generatedColumn:D+1},consumer:new e(f.getArg(v,"map"),u)}})}var f=C("./util"),c=C("./binary-search"),l=C("./array-set").ArraySet,q=C("./base64-vlq"),r=C("./quick-sort").quickSort;e.fromSourceMap=function(k){return p.fromSourceMap(k)};e.prototype._version=3;e.prototype.__generatedMappings=null;Object.defineProperty(e.prototype,"_generatedMappings",{configurable:!0,enumerable:!0,get:function(){this.__generatedMappings||this._parseMappings(this._mappings,
+this.sourceRoot);return this.__generatedMappings}});e.prototype.__originalMappings=null;Object.defineProperty(e.prototype,"_originalMappings",{configurable:!0,enumerable:!0,get:function(){this.__originalMappings||this._parseMappings(this._mappings,this.sourceRoot);return this.__originalMappings}});e.prototype._charIsMappingSeparator=function(k,u){var d=k.charAt(u);return";"===d||","===d};e.prototype._parseMappings=function(k,u){throw Error("Subclasses must implement _parseMappings");};e.GENERATED_ORDER=
+1;e.ORIGINAL_ORDER=2;e.GREATEST_LOWER_BOUND=1;e.LEAST_UPPER_BOUND=2;e.prototype.eachMapping=function(k,u,d){u=u||null;switch(d||e.GENERATED_ORDER){case e.GENERATED_ORDER:d=this._generatedMappings;break;case e.ORIGINAL_ORDER:d=this._originalMappings;break;default:throw Error("Unknown order of iteration.");}var g=this.sourceRoot;d.map(function(n){var v=null===n.source?null:this._sources.at(n.source);v=f.computeSourceURL(g,v,this._sourceMapURL);return{source:v,generatedLine:n.generatedLine,generatedColumn:n.generatedColumn,
+originalLine:n.originalLine,originalColumn:n.originalColumn,name:null===n.name?null:this._names.at(n.name)}},this).forEach(k,u)};e.prototype.allGeneratedPositionsFor=function(k){var u=f.getArg(k,"line"),d={source:f.getArg(k,"source"),originalLine:u,originalColumn:f.getArg(k,"column",0)};null!=this.sourceRoot&&(d.source=f.relative(this.sourceRoot,d.source));if(!this._sources.has(d.source))return[];d.source=this._sources.indexOf(d.source);var g=[];d=this._findMapping(d,this._originalMappings,"originalLine",
+"originalColumn",f.compareByOriginalPositions,c.LEAST_UPPER_BOUND);if(0<=d){var n=this._originalMappings[d];if(void 0===k.column)for(u=n.originalLine;n&&n.originalLine===u;)g.push({line:f.getArg(n,"generatedLine",null),column:f.getArg(n,"generatedColumn",null),lastColumn:f.getArg(n,"lastGeneratedColumn",null)}),n=this._originalMappings[++d];else for(k=n.originalColumn;n&&n.originalLine===u&&n.originalColumn==k;)g.push({line:f.getArg(n,"generatedLine",null),column:f.getArg(n,"generatedColumn",null),
+lastColumn:f.getArg(n,"lastGeneratedColumn",null)}),n=this._originalMappings[++d]}return g};A.SourceMapConsumer=e;p.prototype=Object.create(e.prototype);p.prototype.consumer=e;p.fromSourceMap=function(k,u){var d=Object.create(p.prototype),g=d._names=l.fromArray(k._names.toArray(),!0),n=d._sources=l.fromArray(k._sources.toArray(),!0);d.sourceRoot=k._sourceRoot;d.sourcesContent=k._generateSourcesContent(d._sources.toArray(),d.sourceRoot);d.file=k._file;d._sourceMapURL=u;for(var v=k._mappings.toArray().slice(),
+z=d.__generatedMappings=[],G=d.__originalMappings=[],D=0,L=v.length;D<L;D++){var a=v[D],b=new t;b.generatedLine=a.generatedLine;b.generatedColumn=a.generatedColumn;a.source&&(b.source=n.indexOf(a.source),b.originalLine=a.originalLine,b.originalColumn=a.originalColumn,a.name&&(b.name=g.indexOf(a.name)),G.push(b));z.push(b)}r(d.__originalMappings,f.compareByOriginalPositions);return d};p.prototype._version=3;Object.defineProperty(p.prototype,"sources",{get:function(){return this._sources.toArray().map(function(k){return f.computeSourceURL(this.sourceRoot,
+k,this._sourceMapURL)},this)}});p.prototype._parseMappings=function(k,u){for(var d=1,g=0,n=0,v=0,z=0,G=0,D=k.length,L=0,a={},b={},h=[],w=[],y,I,K,N,P;L<D;)if(";"===k.charAt(L))d++,L++,g=0;else if(","===k.charAt(L))L++;else{y=new t;y.generatedLine=d;for(N=L;N<D&&!this._charIsMappingSeparator(k,N);N++);I=k.slice(L,N);if(K=a[I])L+=I.length;else{for(K=[];L<N;)q.decode(k,L,b),P=b.value,L=b.rest,K.push(P);if(2===K.length)throw Error("Found a source, but no line and column");if(3===K.length)throw Error("Found a source and line, but no column");
+a[I]=K}y.generatedColumn=g+K[0];g=y.generatedColumn;1<K.length&&(y.source=z+K[1],z+=K[1],y.originalLine=n+K[2],n=y.originalLine,y.originalLine+=1,y.originalColumn=v+K[3],v=y.originalColumn,4<K.length&&(y.name=G+K[4],G+=K[4]));w.push(y);"number"===typeof y.originalLine&&h.push(y)}r(w,f.compareByGeneratedPositionsDeflated);this.__generatedMappings=w;r(h,f.compareByOriginalPositions);this.__originalMappings=h};p.prototype._findMapping=function(k,u,d,g,n,v){if(0>=k[d])throw new TypeError("Line must be greater than or equal to 1, got "+
+k[d]);if(0>k[g])throw new TypeError("Column must be greater than or equal to 0, got "+k[g]);return c.search(k,u,n,v)};p.prototype.computeColumnSpans=function(){for(var k=0;k<this._generatedMappings.length;++k){var u=this._generatedMappings[k];if(k+1<this._generatedMappings.length){var d=this._generatedMappings[k+1];if(u.generatedLine===d.generatedLine){u.lastGeneratedColumn=d.generatedColumn-1;continue}}u.lastGeneratedColumn=Infinity}};p.prototype.originalPositionFor=function(k){var u={generatedLine:f.getArg(k,
+"line"),generatedColumn:f.getArg(k,"column")};k=this._findMapping(u,this._generatedMappings,"generatedLine","generatedColumn",f.compareByGeneratedPositionsDeflated,f.getArg(k,"bias",e.GREATEST_LOWER_BOUND));if(0<=k&&(k=this._generatedMappings[k],k.generatedLine===u.generatedLine)){u=f.getArg(k,"source",null);null!==u&&(u=this._sources.at(u),u=f.computeSourceURL(this.sourceRoot,u,this._sourceMapURL));var d=f.getArg(k,"name",null);null!==d&&(d=this._names.at(d));return{source:u,line:f.getArg(k,"originalLine",
+null),column:f.getArg(k,"originalColumn",null),name:d}}return{source:null,line:null,column:null,name:null}};p.prototype.hasContentsOfAllSources=function(){return this.sourcesContent?this.sourcesContent.length>=this._sources.size()&&!this.sourcesContent.some(function(k){return null==k}):!1};p.prototype.sourceContentFor=function(k,u){if(!this.sourcesContent)return null;var d=k;null!=this.sourceRoot&&(d=f.relative(this.sourceRoot,d));if(this._sources.has(d))return this.sourcesContent[this._sources.indexOf(d)];
+var g=this.sources,n;for(n=0;n<g.length;++n)if(g[n]==k)return this.sourcesContent[n];var v;if(null!=this.sourceRoot&&(v=f.urlParse(this.sourceRoot))){g=d.replace(/^file:\/\//,"");if("file"==v.scheme&&this._sources.has(g))return this.sourcesContent[this._sources.indexOf(g)];if((!v.path||"/"==v.path)&&this._sources.has("/"+d))return this.sourcesContent[this._sources.indexOf("/"+d)]}if(u)return null;throw Error('"'+d+'" is not in the SourceMap.');};p.prototype.generatedPositionFor=function(k){var u=
+f.getArg(k,"source");null!=this.sourceRoot&&(u=f.relative(this.sourceRoot,u));if(!this._sources.has(u))return{line:null,column:null,lastColumn:null};u=this._sources.indexOf(u);u={source:u,originalLine:f.getArg(k,"line"),originalColumn:f.getArg(k,"column")};k=this._findMapping(u,this._originalMappings,"originalLine","originalColumn",f.compareByOriginalPositions,f.getArg(k,"bias",e.GREATEST_LOWER_BOUND));return 0<=k&&(k=this._originalMappings[k],k.source===u.source)?{line:f.getArg(k,"generatedLine",
+null),column:f.getArg(k,"generatedColumn",null),lastColumn:f.getArg(k,"lastGeneratedColumn",null)}:{line:null,column:null,lastColumn:null}};A.BasicSourceMapConsumer=p;m.prototype=Object.create(e.prototype);m.prototype.constructor=e;m.prototype._version=3;Object.defineProperty(m.prototype,"sources",{get:function(){for(var k=[],u=0;u<this._sections.length;u++)for(var d=0;d<this._sections[u].consumer.sources.length;d++)k.push(this._sections[u].consumer.sources[d]);return k}});m.prototype.originalPositionFor=
+function(k){var u={generatedLine:f.getArg(k,"line"),generatedColumn:f.getArg(k,"column")},d=c.search(u,this._sections,function(g,n){var v=g.generatedLine-n.generatedOffset.generatedLine;return v?v:g.generatedColumn-n.generatedOffset.generatedColumn});return(d=this._sections[d])?d.consumer.originalPositionFor({line:u.generatedLine-(d.generatedOffset.generatedLine-1),column:u.generatedColumn-(d.generatedOffset.generatedLine===u.generatedLine?d.generatedOffset.generatedColumn-1:0),bias:k.bias}):{source:null,
+line:null,column:null,name:null}};m.prototype.hasContentsOfAllSources=function(){return this._sections.every(function(k){return k.consumer.hasContentsOfAllSources()})};m.prototype.sourceContentFor=function(k,u){for(var d=0;d<this._sections.length;d++){var g=this._sections[d].consumer.sourceContentFor(k,!0);if(g)return g}if(u)return null;throw Error('"'+k+'" is not in the SourceMap.');};m.prototype.generatedPositionFor=function(k){for(var u=0;u<this._sections.length;u++){var d=this._sections[u];if(-1!==
+d.consumer.sources.indexOf(f.getArg(k,"source"))){var g=d.consumer.generatedPositionFor(k);if(g)return{line:g.line+(d.generatedOffset.generatedLine-1),column:g.column+(d.generatedOffset.generatedLine===g.line?d.generatedOffset.generatedColumn-1:0)}}}return{line:null,column:null}};m.prototype._parseMappings=function(k,u){this.__generatedMappings=[];this.__originalMappings=[];for(var d=0;d<this._sections.length;d++)for(var g=this._sections[d],n=g.consumer._generatedMappings,v=0;v<n.length;v++){var z=
+n[v],G=g.consumer._sources.at(z.source);G=f.computeSourceURL(g.consumer.sourceRoot,G,this._sourceMapURL);this._sources.add(G);G=this._sources.indexOf(G);var D=null;z.name&&(D=g.consumer._names.at(z.name),this._names.add(D),D=this._names.indexOf(D));z={source:G,generatedLine:z.generatedLine+(g.generatedOffset.generatedLine-1),generatedColumn:z.generatedColumn+(g.generatedOffset.generatedLine===z.generatedLine?g.generatedOffset.generatedColumn-1:0),originalLine:z.originalLine,originalColumn:z.originalColumn,
+name:D};this.__generatedMappings.push(z);"number"===typeof z.originalLine&&this.__originalMappings.push(z)}r(this.__generatedMappings,f.compareByGeneratedPositionsDeflated);r(this.__originalMappings,f.compareByOriginalPositions)};A.IndexedSourceMapConsumer=m},{"./array-set":10,"./base64-vlq":11,"./binary-search":13,"./quick-sort":15,"./util":19}],17:[function(C,J,A){function e(c){c||(c={});this._file=t.getArg(c,"file",null);this._sourceRoot=t.getArg(c,"sourceRoot",null);this._skipValidation=t.getArg(c,
+"skipValidation",!1);this._sources=new m;this._names=new m;this._mappings=new f;this._sourcesContents=null}var p=C("./base64-vlq"),t=C("./util"),m=C("./array-set").ArraySet,f=C("./mapping-list").MappingList;e.prototype._version=3;e.fromSourceMap=function(c){var l=c.sourceRoot,q=new e({file:c.file,sourceRoot:l});c.eachMapping(function(r){var k={generated:{line:r.generatedLine,column:r.generatedColumn}};null!=r.source&&(k.source=r.source,null!=l&&(k.source=t.relative(l,k.source)),k.original={line:r.originalLine,
+column:r.originalColumn},null!=r.name&&(k.name=r.name));q.addMapping(k)});c.sources.forEach(function(r){var k=r;null!==l&&(k=t.relative(l,r));q._sources.has(k)||q._sources.add(k);k=c.sourceContentFor(r);null!=k&&q.setSourceContent(r,k)});return q};e.prototype.addMapping=function(c){var l=t.getArg(c,"generated"),q=t.getArg(c,"original",null),r=t.getArg(c,"source",null);c=t.getArg(c,"name",null);this._skipValidation||this._validateMapping(l,q,r,c);null!=r&&(r=String(r),this._sources.has(r)||this._sources.add(r));
+null!=c&&(c=String(c),this._names.has(c)||this._names.add(c));this._mappings.add({generatedLine:l.line,generatedColumn:l.column,originalLine:null!=q&&q.line,originalColumn:null!=q&&q.column,source:r,name:c})};e.prototype.setSourceContent=function(c,l){var q=c;null!=this._sourceRoot&&(q=t.relative(this._sourceRoot,q));null!=l?(this._sourcesContents||(this._sourcesContents=Object.create(null)),this._sourcesContents[t.toSetString(q)]=l):this._sourcesContents&&(delete this._sourcesContents[t.toSetString(q)],
+0===Object.keys(this._sourcesContents).length&&(this._sourcesContents=null))};e.prototype.applySourceMap=function(c,l,q){var r=l;if(null==l){if(null==c.file)throw Error('SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, or the source map\'s "file" property. Both were omitted.');r=c.file}var k=this._sourceRoot;null!=k&&(r=t.relative(k,r));var u=new m,d=new m;this._mappings.unsortedForEach(function(g){if(g.source===r&&null!=g.originalLine){var n=c.originalPositionFor({line:g.originalLine,
+column:g.originalColumn});null!=n.source&&(g.source=n.source,null!=q&&(g.source=t.join(q,g.source)),null!=k&&(g.source=t.relative(k,g.source)),g.originalLine=n.line,g.originalColumn=n.column,null!=n.name&&(g.name=n.name))}n=g.source;null==n||u.has(n)||u.add(n);g=g.name;null==g||d.has(g)||d.add(g)},this);this._sources=u;this._names=d;c.sources.forEach(function(g){var n=c.sourceContentFor(g);null!=n&&(null!=q&&(g=t.join(q,g)),null!=k&&(g=t.relative(k,g)),this.setSourceContent(g,n))},this)};e.prototype._validateMapping=
+function(c,l,q,r){if(l&&"number"!==typeof l.line&&"number"!==typeof l.column)throw Error("original.line and original.column are not numbers -- you probably meant to omit the original mapping entirely and only map the generated position. If so, pass null for the original mapping instead of an object with empty or null values.");if(!(c&&"line"in c&&"column"in c&&0<c.line&&0<=c.column&&!l&&!q&&!r||c&&"line"in c&&"column"in c&&l&&"line"in l&&"column"in l&&0<c.line&&0<=c.column&&0<l.line&&0<=l.column&&
+q))throw Error("Invalid mapping: "+JSON.stringify({generated:c,source:q,original:l,name:r}));};e.prototype._serializeMappings=function(){for(var c=0,l=1,q=0,r=0,k=0,u=0,d="",g,n,v,z=this._mappings.toArray(),G=0,D=z.length;G<D;G++){n=z[G];g="";if(n.generatedLine!==l)for(c=0;n.generatedLine!==l;)g+=";",l++;else if(0<G){if(!t.compareByGeneratedPositionsInflated(n,z[G-1]))continue;g+=","}g+=p.encode(n.generatedColumn-c);c=n.generatedColumn;null!=n.source&&(v=this._sources.indexOf(n.source),g+=p.encode(v-
+u),u=v,g+=p.encode(n.originalLine-1-r),r=n.originalLine-1,g+=p.encode(n.originalColumn-q),q=n.originalColumn,null!=n.name&&(n=this._names.indexOf(n.name),g+=p.encode(n-k),k=n));d+=g}return d};e.prototype._generateSourcesContent=function(c,l){return c.map(function(q){if(!this._sourcesContents)return null;null!=l&&(q=t.relative(l,q));q=t.toSetString(q);return Object.prototype.hasOwnProperty.call(this._sourcesContents,q)?this._sourcesContents[q]:null},this)};e.prototype.toJSON=function(){var c={version:this._version,
+sources:this._sources.toArray(),names:this._names.toArray(),mappings:this._serializeMappings()};null!=this._file&&(c.file=this._file);null!=this._sourceRoot&&(c.sourceRoot=this._sourceRoot);this._sourcesContents&&(c.sourcesContent=this._generateSourcesContent(c.sources,c.sourceRoot));return c};e.prototype.toString=function(){return JSON.stringify(this.toJSON())};A.SourceMapGenerator=e},{"./array-set":10,"./base64-vlq":11,"./mapping-list":14,"./util":19}],18:[function(C,J,A){function e(f,c,l,q,r){this.children=
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+u<k.length?k[u++]:void 0,G=(u<k.length?k[u++]:void 0)||"";return z+G},g=1,n=0,v=null;c.eachMapping(function(z){if(null!==v)if(g<z.generatedLine)q(v,d()),g++,n=0;else{var G=k[u]||"",D=G.substr(0,z.generatedColumn-n);k[u]=G.substr(z.generatedColumn-n);n=z.generatedColumn;q(v,D);v=z;return}for(;g<z.generatedLine;)r.add(d()),g++;n<z.generatedColumn&&(G=k[u]||"",r.add(G.substr(0,z.generatedColumn)),k[u]=G.substr(z.generatedColumn),n=z.generatedColumn);v=z},this);u<k.length&&(v&&q(v,d()),r.add(k.splice(u).join("")));
+c.sources.forEach(function(z){var G=c.sourceContentFor(z);null!=G&&(null!=l&&(z=t.join(l,z)),r.setSourceContent(z,G))});return r};e.prototype.add=function(f){if(Array.isArray(f))f.forEach(function(c){this.add(c)},this);else if(f.$$$isSourceNode$$$||"string"===typeof f)f&&this.children.push(f);else throw new TypeError("Expected a SourceNode, string, or an array of SourceNodes and strings. Got "+f);return this};e.prototype.prepend=function(f){if(Array.isArray(f))for(var c=f.length-1;0<=c;c--)this.prepend(f[c]);
+else if(f.$$$isSourceNode$$$||"string"===typeof f)this.children.unshift(f);else throw new TypeError("Expected a SourceNode, string, or an array of SourceNodes and strings. Got "+f);return this};e.prototype.walk=function(f){for(var c,l=0,q=this.children.length;l<q;l++)c=this.children[l],c.$$$isSourceNode$$$?c.walk(f):""!==c&&f(c,{source:this.source,line:this.line,column:this.column,name:this.name})};e.prototype.join=function(f){var c,l=this.children.length;if(0<l){var q=[];for(c=0;c<l-1;c++)q.push(this.children[c]),
+q.push(f);q.push(this.children[c]);this.children=q}return this};e.prototype.replaceRight=function(f,c){var l=this.children[this.children.length-1];l.$$$isSourceNode$$$?l.replaceRight(f,c):"string"===typeof l?this.children[this.children.length-1]=l.replace(f,c):this.children.push("".replace(f,c));return this};e.prototype.setSourceContent=function(f,c){this.sourceContents[t.toSetString(f)]=c};e.prototype.walkSourceContents=function(f){for(var c=0,l=this.children.length;c<l;c++)this.children[c].$$$isSourceNode$$$&&
+this.children[c].walkSourceContents(f);var q=Object.keys(this.sourceContents);c=0;for(l=q.length;c<l;c++)f(t.fromSetString(q[c]),this.sourceContents[q[c]])};e.prototype.toString=function(){var f="";this.walk(function(c){f+=c});return f};e.prototype.toStringWithSourceMap=function(f){var c="",l=1,q=0,r=new p(f),k=!1,u=null,d=null,g=null,n=null;this.walk(function(v,z){c+=v;null!==z.source&&null!==z.line&&null!==z.column?(u===z.source&&d===z.line&&g===z.column&&n===z.name||r.addMapping({source:z.source,
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+B});var N=t(I);I.push(function(x){a:{if(p())try{var B=new XMLHttpRequest;B.open("GET",x,!1);B.send(null);var F=B.getResponseHeader("SourceMap")||B.getResponseHeader("X-SourceMap");if(F){var E=F;break a}}catch(M){}E=K(x);B=/(?:\/\/[@#][\s]*sourceMappingURL=([^\s'"]+)[\s]*$)|(?:\/\*[@#][\s]*sourceMappingURL=([^\s*'"]+)[\s]*(?:\*\/)[\s]*$)/mg;for(var H;F=B.exec(E);)H=F;E=H?H[1]:null}if(!E)return null;w.test(E)?(H=E.slice(E.indexOf(",")+1),H=z(H,"base64").toString(),E=x):(E=m(x,E),H=K(E));return H?{url:E,
+map:H}:null});var P=y.slice(0),W=I.slice(0);A.wrapCallSite=r;A.getErrorSource=u;A.mapSourcePosition=f;A.retrieveSourceMap=N;A.install=function(x){x=x||{};if(x.environment&&(a=x.environment,-1===["node","browser","auto"].indexOf(a)))throw Error("environment "+a+" was unknown. Available options are {auto, browser, node}");x.retrieveFile&&(x.overrideRetrieveFile&&(y.length=0),y.unshift(x.retrieveFile));x.retrieveSourceMap&&(x.overrideRetrieveSourceMap&&(I.length=0),I.unshift(x.retrieveSourceMap));if(x.hookRequire&&
+!p()){var B=J.require("module"),F=B.prototype._compile;F.__sourceMapSupport||(B.prototype._compile=function(E,H){b[H]=E;h[H]=void 0;return F.call(this,E,H)},B.prototype._compile.__sourceMapSupport=!0)}L||(L="emptyCacheBetweenOperations"in x?x.emptyCacheBetweenOperations:!1);G||(G=!0,Error.prepareStackTrace=k);if(!D){x="handleUncaughtExceptions"in x?x.handleUncaughtExceptions:!0;try{!1===J.require("worker_threads").isMainThread&&(x=!1)}catch(E){}x&&"object"===typeof e&&null!==e&&"function"===typeof e.on&&
+(D=!0,d())}};A.resetRetrieveHandlers=function(){y.length=0;I.length=0;y=P.slice(0);I=W.slice(0);N=t(I);K=t(y)}}).call(this,C("g5I+bs"))},{"buffer-from":4,fs:3,"g5I+bs":9,path:8,"source-map":20}]},{},[1]);return R});

node_modules/terser/node_modules/source-map-support/package.json

@@ -0,0 +1,31 @@
+{
+  "name": "source-map-support",
+  "description": "Fixes stack traces for files with source maps",
+  "version": "0.5.21",
+  "main": "./source-map-support.js",
+  "scripts": {
+    "build": "node build.js",
+    "serve-tests": "http-server -p 1336",
+    "prepublish": "npm run build",
+    "test": "mocha"
+  },
+  "dependencies": {
+    "buffer-from": "^1.0.0",
+    "source-map": "^0.6.0"
+  },
+  "devDependencies": {
+    "browserify": "^4.2.3",
+    "coffeescript": "^1.12.7",
+    "http-server": "^0.11.1",
+    "mocha": "^3.5.3",
+    "webpack": "^1.15.0"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/evanw/node-source-map-support"
+  },
+  "bugs": {
+    "url": "https://github.com/evanw/node-source-map-support/issues"
+  },
+  "license": "MIT"
+}

node_modules/terser/node_modules/source-map-support/register-hook-require.js

@@ -0,0 +1 @@
+require('./').install({hookRequire: true});

node_modules/terser/node_modules/source-map-support/register.js

@@ -0,0 +1 @@
+require('./').install();

node_modules/terser/node_modules/source-map-support/source-map-support.js

@@ -0,0 +1,625 @@
+var SourceMapConsumer = require('source-map').SourceMapConsumer;
+var path = require('path');
+
+var fs;
+try {
+  fs = require('fs');
+  if (!fs.existsSync || !fs.readFileSync) {
+    // fs doesn't have all methods we need
+    fs = null;
+  }
+} catch (err) {
+  /* nop */
+}
+
+var bufferFrom = require('buffer-from');
+
+/**
+ * Requires a module which is protected against bundler minification.
+ *
+ * @param {NodeModule} mod
+ * @param {string} request
+ */
+function dynamicRequire(mod, request) {
+  return mod.require(request);
+}
+
+// Only install once if called multiple times
+var errorFormatterInstalled = false;
+var uncaughtShimInstalled = false;
+
+// If true, the caches are reset before a stack trace formatting operation
+var emptyCacheBetweenOperations = false;
+
+// Supports {browser, node, auto}
+var environment = "auto";
+
+// Maps a file path to a string containing the file contents
+var fileContentsCache = {};
+
+// Maps a file path to a source map for that file
+var sourceMapCache = {};
+
+// Regex for detecting source maps
+var reSourceMap = /^data:application\/json[^,]+base64,/;
+
+// Priority list of retrieve handlers
+var retrieveFileHandlers = [];
+var retrieveMapHandlers = [];
+
+function isInBrowser() {
+  if (environment === "browser")
+    return true;
+  if (environment === "node")
+    return false;
+  return ((typeof window !== 'undefined') && (typeof XMLHttpRequest === 'function') && !(window.require && window.module && window.process && window.process.type === "renderer"));
+}
+
+function hasGlobalProcessEventEmitter() {
+  return ((typeof process === 'object') && (process !== null) && (typeof process.on === 'function'));
+}
+
+function globalProcessVersion() {
+  if ((typeof process === 'object') && (process !== null)) {
+    return process.version;
+  } else {
+    return '';
+  }
+}
+
+function globalProcessStderr() {
+  if ((typeof process === 'object') && (process !== null)) {
+    return process.stderr;
+  }
+}
+
+function globalProcessExit(code) {
+  if ((typeof process === 'object') && (process !== null) && (typeof process.exit === 'function')) {
+    return process.exit(code);
+  }
+}
+
+function handlerExec(list) {
+  return function(arg) {
+    for (var i = 0; i < list.length; i++) {
+      var ret = list[i](arg);
+      if (ret) {
+        return ret;
+      }
+    }
+    return null;
+  };
+}
+
+var retrieveFile = handlerExec(retrieveFileHandlers);
+
+retrieveFileHandlers.push(function(path) {
+  // Trim the path to make sure there is no extra whitespace.
+  path = path.trim();
+  if (/^file:/.test(path)) {
+    // existsSync/readFileSync can't handle file protocol, but once stripped, it works
+    path = path.replace(/file:\/\/\/(\w:)?/, function(protocol, drive) {
+      return drive ?
+        '' : // file:///C:/dir/file -> C:/dir/file
+        '/'; // file:///root-dir/file -> /root-dir/file
+    });
+  }
+  if (path in fileContentsCache) {
+    return fileContentsCache[path];
+  }
+
+  var contents = '';
+  try {
+    if (!fs) {
+      // Use SJAX if we are in the browser
+      var xhr = new XMLHttpRequest();
+      xhr.open('GET', path, /** async */ false);
+      xhr.send(null);
+      if (xhr.readyState === 4 && xhr.status === 200) {
+        contents = xhr.responseText;
+      }
+    } else if (fs.existsSync(path)) {
+      // Otherwise, use the filesystem
+      contents = fs.readFileSync(path, 'utf8');
+    }
+  } catch (er) {
+    /* ignore any errors */
+  }
+
+  return fileContentsCache[path] = contents;
+});
+
+// Support URLs relative to a directory, but be careful about a protocol prefix
+// in case we are in the browser (i.e. directories may start with "http://" or "file:///")
+function supportRelativeURL(file, url) {
+  if (!file) return url;
+  var dir = path.dirname(file);
+  var match = /^\w+:\/\/[^\/]*/.exec(dir);
+  var protocol = match ? match[0] : '';
+  var startPath = dir.slice(protocol.length);
+  if (protocol && /^\/\w\:/.test(startPath)) {
+    // handle file:///C:/ paths
+    protocol += '/';
+    return protocol + path.resolve(dir.slice(protocol.length), url).replace(/\\/g, '/');
+  }
+  return protocol + path.resolve(dir.slice(protocol.length), url);
+}
+
+function retrieveSourceMapURL(source) {
+  var fileData;
+
+  if (isInBrowser()) {
+     try {
+       var xhr = new XMLHttpRequest();
+       xhr.open('GET', source, false);
+       xhr.send(null);
+       fileData = xhr.readyState === 4 ? xhr.responseText : null;
+
+       // Support providing a sourceMappingURL via the SourceMap header
+       var sourceMapHeader = xhr.getResponseHeader("SourceMap") ||
+                             xhr.getResponseHeader("X-SourceMap");
+       if (sourceMapHeader) {
+         return sourceMapHeader;
+       }
+     } catch (e) {
+     }
+  }
+
+  // Get the URL of the source map
+  fileData = retrieveFile(source);
+  var re = /(?:\/\/[@#][\s]*sourceMappingURL=([^\s'"]+)[\s]*$)|(?:\/\*[@#][\s]*sourceMappingURL=([^\s*'"]+)[\s]*(?:\*\/)[\s]*$)/mg;
+  // Keep executing the search to find the *last* sourceMappingURL to avoid
+  // picking up sourceMappingURLs from comments, strings, etc.
+  var lastMatch, match;
+  while (match = re.exec(fileData)) lastMatch = match;
+  if (!lastMatch) return null;
+  return lastMatch[1];
+};
+
+// Can be overridden by the retrieveSourceMap option to install. Takes a
+// generated source filename; returns a {map, optional url} object, or null if
+// there is no source map.  The map field may be either a string or the parsed
+// JSON object (ie, it must be a valid argument to the SourceMapConsumer
+// constructor).
+var retrieveSourceMap = handlerExec(retrieveMapHandlers);
+retrieveMapHandlers.push(function(source) {
+  var sourceMappingURL = retrieveSourceMapURL(source);
+  if (!sourceMappingURL) return null;
+
+  // Read the contents of the source map
+  var sourceMapData;
+  if (reSourceMap.test(sourceMappingURL)) {
+    // Support source map URL as a data url
+    var rawData = sourceMappingURL.slice(sourceMappingURL.indexOf(',') + 1);
+    sourceMapData = bufferFrom(rawData, "base64").toString();
+    sourceMappingURL = source;
+  } else {
+    // Support source map URLs relative to the source URL
+    sourceMappingURL = supportRelativeURL(source, sourceMappingURL);
+    sourceMapData = retrieveFile(sourceMappingURL);
+  }
+
+  if (!sourceMapData) {
+    return null;
+  }
+
+  return {
+    url: sourceMappingURL,
+    map: sourceMapData
+  };
+});
+
+function mapSourcePosition(position) {
+  var sourceMap = sourceMapCache[position.source];
+  if (!sourceMap) {
+    // Call the (overrideable) retrieveSourceMap function to get the source map.
+    var urlAndMap = retrieveSourceMap(position.source);
+    if (urlAndMap) {
+      sourceMap = sourceMapCache[position.source] = {
+        url: urlAndMap.url,
+        map: new SourceMapConsumer(urlAndMap.map)
+      };
+
+      // Load all sources stored inline with the source map into the file cache
+      // to pretend like they are already loaded. They may not exist on disk.
+      if (sourceMap.map.sourcesContent) {
+        sourceMap.map.sources.forEach(function(source, i) {
+          var contents = sourceMap.map.sourcesContent[i];
+          if (contents) {
+            var url = supportRelativeURL(sourceMap.url, source);
+            fileContentsCache[url] = contents;
+          }
+        });
+      }
+    } else {
+      sourceMap = sourceMapCache[position.source] = {
+        url: null,
+        map: null
+      };
+    }
+  }
+
+  // Resolve the source URL relative to the URL of the source map
+  if (sourceMap && sourceMap.map && typeof sourceMap.map.originalPositionFor === 'function') {
+    var originalPosition = sourceMap.map.originalPositionFor(position);
+
+    // Only return the original position if a matching line was found. If no
+    // matching line is found then we return position instead, which will cause
+    // the stack trace to print the path and line for the compiled file. It is
+    // better to give a precise location in the compiled file than a vague
+    // location in the original file.
+    if (originalPosition.source !== null) {
+      originalPosition.source = supportRelativeURL(
+        sourceMap.url, originalPosition.source);
+      return originalPosition;
+    }
+  }
+
+  return position;
+}
+
+// Parses code generated by FormatEvalOrigin(), a function inside V8:
+// https://code.google.com/p/v8/source/browse/trunk/src/messages.js
+function mapEvalOrigin(origin) {
+  // Most eval() calls are in this format
+  var match = /^eval at ([^(]+) \((.+):(\d+):(\d+)\)$/.exec(origin);
+  if (match) {
+    var position = mapSourcePosition({
+      source: match[2],
+      line: +match[3],
+      column: match[4] - 1
+    });
+    return 'eval at ' + match[1] + ' (' + position.source + ':' +
+      position.line + ':' + (position.column + 1) + ')';
+  }
+
+  // Parse nested eval() calls using recursion
+  match = /^eval at ([^(]+) \((.+)\)$/.exec(origin);
+  if (match) {
+    return 'eval at ' + match[1] + ' (' + mapEvalOrigin(match[2]) + ')';
+  }
+
+  // Make sure we still return useful information if we didn't find anything
+  return origin;
+}
+
+// This is copied almost verbatim from the V8 source code at
+// https://code.google.com/p/v8/source/browse/trunk/src/messages.js. The
+// implementation of wrapCallSite() used to just forward to the actual source
+// code of CallSite.prototype.toString but unfortunately a new release of V8
+// did something to the prototype chain and broke the shim. The only fix I
+// could find was copy/paste.
+function CallSiteToString() {
+  var fileName;
+  var fileLocation = "";
+  if (this.isNative()) {
+    fileLocation = "native";
+  } else {
+    fileName = this.getScriptNameOrSourceURL();
+    if (!fileName && this.isEval()) {
+      fileLocation = this.getEvalOrigin();
+      fileLocation += ", ";  // Expecting source position to follow.
+    }
+
+    if (fileName) {
+      fileLocation += fileName;
+    } else {
+      // Source code does not originate from a file and is not native, but we
+      // can still get the source position inside the source string, e.g. in
+      // an eval string.
+      fileLocation += "<anonymous>";
+    }
+    var lineNumber = this.getLineNumber();
+    if (lineNumber != null) {
+      fileLocation += ":" + lineNumber;
+      var columnNumber = this.getColumnNumber();
+      if (columnNumber) {
+        fileLocation += ":" + columnNumber;
+      }
+    }
+  }
+
+  var line = "";
+  var functionName = this.getFunctionName();
+  var addSuffix = true;
+  var isConstructor = this.isConstructor();
+  var isMethodCall = !(this.isToplevel() || isConstructor);
+  if (isMethodCall) {
+    var typeName = this.getTypeName();
+    // Fixes shim to be backward compatable with Node v0 to v4
+    if (typeName === "[object Object]") {
+      typeName = "null";
+    }
+    var methodName = this.getMethodName();
+    if (functionName) {
+      if (typeName && functionName.indexOf(typeName) != 0) {
+        line += typeName + ".";
+      }
+      line += functionName;
+      if (methodName && functionName.indexOf("." + methodName) != functionName.length - methodName.length - 1) {
+        line += " [as " + methodName + "]";
+      }
+    } else {
+      line += typeName + "." + (methodName || "<anonymous>");
+    }
+  } else if (isConstructor) {
+    line += "new " + (functionName || "<anonymous>");
+  } else if (functionName) {
+    line += functionName;
+  } else {
+    line += fileLocation;
+    addSuffix = false;
+  }
+  if (addSuffix) {
+    line += " (" + fileLocation + ")";
+  }
+  return line;
+}
+
+function cloneCallSite(frame) {
+  var object = {};
+  Object.getOwnPropertyNames(Object.getPrototypeOf(frame)).forEach(function(name) {
+    object[name] = /^(?:is|get)/.test(name) ? function() { return frame[name].call(frame); } : frame[name];
+  });
+  object.toString = CallSiteToString;
+  return object;
+}
+
+function wrapCallSite(frame, state) {
+  // provides interface backward compatibility
+  if (state === undefined) {
+    state = { nextPosition: null, curPosition: null }
+  }
+  if(frame.isNative()) {
+    state.curPosition = null;
+    return frame;
+  }
+
+  // Most call sites will return the source file from getFileName(), but code
+  // passed to eval() ending in "//# sourceURL=..." will return the source file
+  // from getScriptNameOrSourceURL() instead
+  var source = frame.getFileName() || frame.getScriptNameOrSourceURL();
+  if (source) {
+    var line = frame.getLineNumber();
+    var column = frame.getColumnNumber() - 1;
+
+    // Fix position in Node where some (internal) code is prepended.
+    // See https://github.com/evanw/node-source-map-support/issues/36
+    // Header removed in node at ^10.16 || >=11.11.0
+    // v11 is not an LTS candidate, we can just test the one version with it.
+    // Test node versions for: 10.16-19, 10.20+, 12-19, 20-99, 100+, or 11.11
+    var noHeader = /^v(10\.1[6-9]|10\.[2-9][0-9]|10\.[0-9]{3,}|1[2-9]\d*|[2-9]\d|\d{3,}|11\.11)/;
+    var headerLength = noHeader.test(globalProcessVersion()) ? 0 : 62;
+    if (line === 1 && column > headerLength && !isInBrowser() && !frame.isEval()) {
+      column -= headerLength;
+    }
+
+    var position = mapSourcePosition({
+      source: source,
+      line: line,
+      column: column
+    });
+    state.curPosition = position;
+    frame = cloneCallSite(frame);
+    var originalFunctionName = frame.getFunctionName;
+    frame.getFunctionName = function() {
+      if (state.nextPosition == null) {
+        return originalFunctionName();
+      }
+      return state.nextPosition.name || originalFunctionName();
+    };
+    frame.getFileName = function() { return position.source; };
+    frame.getLineNumber = function() { return position.line; };
+    frame.getColumnNumber = function() { return position.column + 1; };
+    frame.getScriptNameOrSourceURL = function() { return position.source; };
+    return frame;
+  }
+
+  // Code called using eval() needs special handling
+  var origin = frame.isEval() && frame.getEvalOrigin();
+  if (origin) {
+    origin = mapEvalOrigin(origin);
+    frame = cloneCallSite(frame);
+    frame.getEvalOrigin = function() { return origin; };
+    return frame;
+  }
+
+  // If we get here then we were unable to change the source position
+  return frame;
+}
+
+// This function is part of the V8 stack trace API, for more info see:
+// https://v8.dev/docs/stack-trace-api
+function prepareStackTrace(error, stack) {
+  if (emptyCacheBetweenOperations) {
+    fileContentsCache = {};
+    sourceMapCache = {};
+  }
+
+  var name = error.name || 'Error';
+  var message = error.message || '';
+  var errorString = name + ": " + message;
+
+  var state = { nextPosition: null, curPosition: null };
+  var processedStack = [];
+  for (var i = stack.length - 1; i >= 0; i--) {
+    processedStack.push('\n    at ' + wrapCallSite(stack[i], state));
+    state.nextPosition = state.curPosition;
+  }
+  state.curPosition = state.nextPosition = null;
+  return errorString + processedStack.reverse().join('');
+}
+
+// Generate position and snippet of original source with pointer
+function getErrorSource(error) {
+  var match = /\n    at [^(]+ \((.*):(\d+):(\d+)\)/.exec(error.stack);
+  if (match) {
+    var source = match[1];
+    var line = +match[2];
+    var column = +match[3];
+
+    // Support the inline sourceContents inside the source map
+    var contents = fileContentsCache[source];
+
+    // Support files on disk
+    if (!contents && fs && fs.existsSync(source)) {
+      try {
+        contents = fs.readFileSync(source, 'utf8');
+      } catch (er) {
+        contents = '';
+      }
+    }
+
+    // Format the line from the original source code like node does
+    if (contents) {
+      var code = contents.split(/(?:\r\n|\r|\n)/)[line - 1];
+      if (code) {
+        return source + ':' + line + '\n' + code + '\n' +
+          new Array(column).join(' ') + '^';
+      }
+    }
+  }
+  return null;
+}
+
+function printErrorAndExit (error) {
+  var source = getErrorSource(error);
+
+  // Ensure error is printed synchronously and not truncated
+  var stderr = globalProcessStderr();
+  if (stderr && stderr._handle && stderr._handle.setBlocking) {
+    stderr._handle.setBlocking(true);
+  }
+
+  if (source) {
+    console.error();
+    console.error(source);
+  }
+
+  console.error(error.stack);
+  globalProcessExit(1);
+}
+
+function shimEmitUncaughtException () {
+  var origEmit = process.emit;
+
+  process.emit = function (type) {
+    if (type === 'uncaughtException') {
+      var hasStack = (arguments[1] && arguments[1].stack);
+      var hasListeners = (this.listeners(type).length > 0);
+
+      if (hasStack && !hasListeners) {
+        return printErrorAndExit(arguments[1]);
+      }
+    }
+
+    return origEmit.apply(this, arguments);
+  };
+}
+
+var originalRetrieveFileHandlers = retrieveFileHandlers.slice(0);
+var originalRetrieveMapHandlers = retrieveMapHandlers.slice(0);
+
+exports.wrapCallSite = wrapCallSite;
+exports.getErrorSource = getErrorSource;
+exports.mapSourcePosition = mapSourcePosition;
+exports.retrieveSourceMap = retrieveSourceMap;
+
+exports.install = function(options) {
+  options = options || {};
+
+  if (options.environment) {
+    environment = options.environment;
+    if (["node", "browser", "auto"].indexOf(environment) === -1) {
+      throw new Error("environment " + environment + " was unknown. Available options are {auto, browser, node}")
+    }
+  }
+
+  // Allow sources to be found by methods other than reading the files
+  // directly from disk.
+  if (options.retrieveFile) {
+    if (options.overrideRetrieveFile) {
+      retrieveFileHandlers.length = 0;
+    }
+
+    retrieveFileHandlers.unshift(options.retrieveFile);
+  }
+
+  // Allow source maps to be found by methods other than reading the files
+  // directly from disk.
+  if (options.retrieveSourceMap) {
+    if (options.overrideRetrieveSourceMap) {
+      retrieveMapHandlers.length = 0;
+    }
+
+    retrieveMapHandlers.unshift(options.retrieveSourceMap);
+  }
+
+  // Support runtime transpilers that include inline source maps
+  if (options.hookRequire && !isInBrowser()) {
+    // Use dynamicRequire to avoid including in browser bundles
+    var Module = dynamicRequire(module, 'module');
+    var $compile = Module.prototype._compile;
+
+    if (!$compile.__sourceMapSupport) {
+      Module.prototype._compile = function(content, filename) {
+        fileContentsCache[filename] = content;
+        sourceMapCache[filename] = undefined;
+        return $compile.call(this, content, filename);
+      };
+
+      Module.prototype._compile.__sourceMapSupport = true;
+    }
+  }
+
+  // Configure options
+  if (!emptyCacheBetweenOperations) {
+    emptyCacheBetweenOperations = 'emptyCacheBetweenOperations' in options ?
+      options.emptyCacheBetweenOperations : false;
+  }
+
+  // Install the error reformatter
+  if (!errorFormatterInstalled) {
+    errorFormatterInstalled = true;
+    Error.prepareStackTrace = prepareStackTrace;
+  }
+
+  if (!uncaughtShimInstalled) {
+    var installHandler = 'handleUncaughtExceptions' in options ?
+      options.handleUncaughtExceptions : true;
+
+    // Do not override 'uncaughtException' with our own handler in Node.js
+    // Worker threads. Workers pass the error to the main thread as an event,
+    // rather than printing something to stderr and exiting.
+    try {
+      // We need to use `dynamicRequire` because `require` on it's own will be optimized by WebPack/Browserify.
+      var worker_threads = dynamicRequire(module, 'worker_threads');
+      if (worker_threads.isMainThread === false) {
+        installHandler = false;
+      }
+    } catch(e) {}
+
+    // Provide the option to not install the uncaught exception handler. This is
+    // to support other uncaught exception handlers (in test frameworks, for
+    // example). If this handler is not installed and there are no other uncaught
+    // exception handlers, uncaught exceptions will be caught by node's built-in
+    // exception handler and the process will still be terminated. However, the
+    // generated JavaScript code will be shown above the stack trace instead of
+    // the original source code.
+    if (installHandler && hasGlobalProcessEventEmitter()) {
+      uncaughtShimInstalled = true;
+      shimEmitUncaughtException();
+    }
+  }
+};
+
+exports.resetRetrieveHandlers = function() {
+  retrieveFileHandlers.length = 0;
+  retrieveMapHandlers.length = 0;
+
+  retrieveFileHandlers = originalRetrieveFileHandlers.slice(0);
+  retrieveMapHandlers = originalRetrieveMapHandlers.slice(0);
+
+  retrieveSourceMap = handlerExec(retrieveMapHandlers);
+  retrieveFile = handlerExec(retrieveFileHandlers);
+}

node_modules/terser/node_modules/source-map/CHANGELOG.md

@@ -0,0 +1,301 @@
+# Change Log
+
+## 0.5.6
+
+* Fix for regression when people were using numbers as names in source maps. See
+  #236.
+
+## 0.5.5
+
+* Fix "regression" of unsupported, implementation behavior that half the world
+  happens to have come to depend on. See #235.
+
+* Fix regression involving function hoisting in SpiderMonkey. See #233.
+
+## 0.5.4
+
+* Large performance improvements to source-map serialization. See #228 and #229.
+
+## 0.5.3
+
+* Do not include unnecessary distribution files. See
+  commit ef7006f8d1647e0a83fdc60f04f5a7ca54886f86.
+
+## 0.5.2
+
+* Include browser distributions of the library in package.json's `files`. See
+  issue #212.
+
+## 0.5.1
+
+* Fix latent bugs in IndexedSourceMapConsumer.prototype._parseMappings. See
+  ff05274becc9e6e1295ed60f3ea090d31d843379.
+
+## 0.5.0
+
+* Node 0.8 is no longer supported.
+
+* Use webpack instead of dryice for bundling.
+
+* Big speedups serializing source maps. See pull request #203.
+
+* Fix a bug with `SourceMapConsumer.prototype.sourceContentFor` and sources that
+  explicitly start with the source root. See issue #199.
+
+## 0.4.4
+
+* Fix an issue where using a `SourceMapGenerator` after having created a
+  `SourceMapConsumer` from it via `SourceMapConsumer.fromSourceMap` failed. See
+  issue #191.
+
+* Fix an issue with where `SourceMapGenerator` would mistakenly consider
+  different mappings as duplicates of each other and avoid generating them. See
+  issue #192.
+
+## 0.4.3
+
+* A very large number of performance improvements, particularly when parsing
+  source maps. Collectively about 75% of time shaved off of the source map
+  parsing benchmark!
+
+* Fix a bug in `SourceMapConsumer.prototype.allGeneratedPositionsFor` and fuzzy
+  searching in the presence of a column option. See issue #177.
+
+* Fix a bug with joining a source and its source root when the source is above
+  the root. See issue #182.
+
+* Add the `SourceMapConsumer.prototype.hasContentsOfAllSources` method to
+  determine when all sources' contents are inlined into the source map. See
+  issue #190.
+
+## 0.4.2
+
+* Add an `.npmignore` file so that the benchmarks aren't pulled down by
+  dependent projects. Issue #169.
+
+* Add an optional `column` argument to
+  `SourceMapConsumer.prototype.allGeneratedPositionsFor` and better handle lines
+  with no mappings. Issues #172 and #173.
+
+## 0.4.1
+
+* Fix accidentally defining a global variable. #170.
+
+## 0.4.0
+
+* The default direction for fuzzy searching was changed back to its original
+  direction. See #164.
+
+* There is now a `bias` option you can supply to `SourceMapConsumer` to control
+  the fuzzy searching direction. See #167.
+
+* About an 8% speed up in parsing source maps. See #159.
+
+* Added a benchmark for parsing and generating source maps.
+
+## 0.3.0
+
+* Change the default direction that searching for positions fuzzes when there is
+  not an exact match. See #154.
+
+* Support for environments using json2.js for JSON serialization. See #156.
+
+## 0.2.0
+
+* Support for consuming "indexed" source maps which do not have any remote
+  sections. See pull request #127. This introduces a minor backwards
+  incompatibility if you are monkey patching `SourceMapConsumer.prototype`
+  methods.
+
+## 0.1.43
+
+* Performance improvements for `SourceMapGenerator` and `SourceNode`. See issue
+  #148 for some discussion and issues #150, #151, and #152 for implementations.
+
+## 0.1.42
+
+* Fix an issue where `SourceNode`s from different versions of the source-map
+  library couldn't be used in conjunction with each other. See issue #142.
+
+## 0.1.41
+
+* Fix a bug with getting the source content of relative sources with a "./"
+  prefix. See issue #145 and [Bug 1090768](bugzil.la/1090768).
+
+* Add the `SourceMapConsumer.prototype.computeColumnSpans` method to compute the
+  column span of each mapping.
+
+* Add the `SourceMapConsumer.prototype.allGeneratedPositionsFor` method to find
+  all generated positions associated with a given original source and line.
+
+## 0.1.40
+
+* Performance improvements for parsing source maps in SourceMapConsumer.
+
+## 0.1.39
+
+* Fix a bug where setting a source's contents to null before any source content
+  had been set before threw a TypeError. See issue #131.
+
+## 0.1.38
+
+* Fix a bug where finding relative paths from an empty path were creating
+  absolute paths. See issue #129.
+
+## 0.1.37
+
+* Fix a bug where if the source root was an empty string, relative source paths
+  would turn into absolute source paths. Issue #124.
+
+## 0.1.36
+
+* Allow the `names` mapping property to be an empty string. Issue #121.
+
+## 0.1.35
+
+* A third optional parameter was added to `SourceNode.fromStringWithSourceMap`
+  to specify a path that relative sources in the second parameter should be
+  relative to. Issue #105.
+
+* If no file property is given to a `SourceMapGenerator`, then the resulting
+  source map will no longer have a `null` file property. The property will
+  simply not exist. Issue #104.
+
+* Fixed a bug where consecutive newlines were ignored in `SourceNode`s.
+  Issue #116.
+
+## 0.1.34
+
+* Make `SourceNode` work with windows style ("\r\n") newlines. Issue #103.
+
+* Fix bug involving source contents and the
+  `SourceMapGenerator.prototype.applySourceMap`. Issue #100.
+
+## 0.1.33
+
+* Fix some edge cases surrounding path joining and URL resolution.
+
+* Add a third parameter for relative path to
+  `SourceMapGenerator.prototype.applySourceMap`.
+
+* Fix issues with mappings and EOLs.
+
+## 0.1.32
+
+* Fixed a bug where SourceMapConsumer couldn't handle negative relative columns
+  (issue 92).
+
+* Fixed test runner to actually report number of failed tests as its process
+  exit code.
+
+* Fixed a typo when reporting bad mappings (issue 87).
+
+## 0.1.31
+
+* Delay parsing the mappings in SourceMapConsumer until queried for a source
+  location.
+
+* Support Sass source maps (which at the time of writing deviate from the spec
+  in small ways) in SourceMapConsumer.
+
+## 0.1.30
+
+* Do not join source root with a source, when the source is a data URI.
+
+* Extend the test runner to allow running single specific test files at a time.
+
+* Performance improvements in `SourceNode.prototype.walk` and
+  `SourceMapConsumer.prototype.eachMapping`.
+
+* Source map browser builds will now work inside Workers.
+
+* Better error messages when attempting to add an invalid mapping to a
+  `SourceMapGenerator`.
+
+## 0.1.29
+
+* Allow duplicate entries in the `names` and `sources` arrays of source maps
+  (usually from TypeScript) we are parsing. Fixes github issue 72.
+
+## 0.1.28
+
+* Skip duplicate mappings when creating source maps from SourceNode; github
+  issue 75.
+
+## 0.1.27
+
+* Don't throw an error when the `file` property is missing in SourceMapConsumer,
+  we don't use it anyway.
+
+## 0.1.26
+
+* Fix SourceNode.fromStringWithSourceMap for empty maps. Fixes github issue 70.
+
+## 0.1.25
+
+* Make compatible with browserify
+
+## 0.1.24
+
+* Fix issue with absolute paths and `file://` URIs. See
+  https://bugzilla.mozilla.org/show_bug.cgi?id=885597
+
+## 0.1.23
+
+* Fix issue with absolute paths and sourcesContent, github issue 64.
+
+## 0.1.22
+
+* Ignore duplicate mappings in SourceMapGenerator. Fixes github issue 21.
+
+## 0.1.21
+
+* Fixed handling of sources that start with a slash so that they are relative to
+  the source root's host.
+
+## 0.1.20
+
+* Fixed github issue #43: absolute URLs aren't joined with the source root
+  anymore.
+
+## 0.1.19
+
+* Using Travis CI to run tests.
+
+## 0.1.18
+
+* Fixed a bug in the handling of sourceRoot.
+
+## 0.1.17
+
+* Added SourceNode.fromStringWithSourceMap.
+
+## 0.1.16
+
+* Added missing documentation.
+
+* Fixed the generating of empty mappings in SourceNode.
+
+## 0.1.15
+
+* Added SourceMapGenerator.applySourceMap.
+
+## 0.1.14
+
+* The sourceRoot is now handled consistently.
+
+## 0.1.13
+
+* Added SourceMapGenerator.fromSourceMap.
+
+## 0.1.12
+
+* SourceNode now generates empty mappings too.
+
+## 0.1.11
+
+* Added name support to SourceNode.
+
+## 0.1.10
+
+* Added sourcesContent support to the customer and generator.

node_modules/terser/node_modules/source-map/LICENSE

@@ -0,0 +1,28 @@
+
+Copyright (c) 2009-2011, Mozilla Foundation and contributors
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* Neither the names of the Mozilla Foundation nor the names of project
+  contributors may be used to endorse or promote products derived from this
+  software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

node_modules/terser/node_modules/source-map/README.md

@@ -0,0 +1,742 @@
+# Source Map
+
+[![Build Status](https://travis-ci.org/mozilla/source-map.png?branch=master)](https://travis-ci.org/mozilla/source-map)
+
+[![NPM](https://nodei.co/npm/source-map.png?downloads=true&downloadRank=true)](https://www.npmjs.com/package/source-map)
+
+This is a library to generate and consume the source map format
+[described here][format].
+
+[format]: https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit
+
+## Use with Node
+
+    $ npm install source-map
+
+## Use on the Web
+
+    <script src="https://raw.githubusercontent.com/mozilla/source-map/master/dist/source-map.min.js" defer></script>
+
+--------------------------------------------------------------------------------
+
+<!-- `npm run toc` to regenerate the Table of Contents -->
+
+<!-- START doctoc generated TOC please keep comment here to allow auto update -->
+<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
+## Table of Contents
+
+- [Examples](#examples)
+  - [Consuming a source map](#consuming-a-source-map)
+  - [Generating a source map](#generating-a-source-map)
+    - [With SourceNode (high level API)](#with-sourcenode-high-level-api)
+    - [With SourceMapGenerator (low level API)](#with-sourcemapgenerator-low-level-api)
+- [API](#api)
+  - [SourceMapConsumer](#sourcemapconsumer)
+    - [new SourceMapConsumer(rawSourceMap)](#new-sourcemapconsumerrawsourcemap)
+    - [SourceMapConsumer.prototype.computeColumnSpans()](#sourcemapconsumerprototypecomputecolumnspans)
+    - [SourceMapConsumer.prototype.originalPositionFor(generatedPosition)](#sourcemapconsumerprototypeoriginalpositionforgeneratedposition)
+    - [SourceMapConsumer.prototype.generatedPositionFor(originalPosition)](#sourcemapconsumerprototypegeneratedpositionfororiginalposition)
+    - [SourceMapConsumer.prototype.allGeneratedPositionsFor(originalPosition)](#sourcemapconsumerprototypeallgeneratedpositionsfororiginalposition)
+    - [SourceMapConsumer.prototype.hasContentsOfAllSources()](#sourcemapconsumerprototypehascontentsofallsources)
+    - [SourceMapConsumer.prototype.sourceContentFor(source[, returnNullOnMissing])](#sourcemapconsumerprototypesourcecontentforsource-returnnullonmissing)
+    - [SourceMapConsumer.prototype.eachMapping(callback, context, order)](#sourcemapconsumerprototypeeachmappingcallback-context-order)
+  - [SourceMapGenerator](#sourcemapgenerator)
+    - [new SourceMapGenerator([startOfSourceMap])](#new-sourcemapgeneratorstartofsourcemap)
+    - [SourceMapGenerator.fromSourceMap(sourceMapConsumer)](#sourcemapgeneratorfromsourcemapsourcemapconsumer)
+    - [SourceMapGenerator.prototype.addMapping(mapping)](#sourcemapgeneratorprototypeaddmappingmapping)
+    - [SourceMapGenerator.prototype.setSourceContent(sourceFile, sourceContent)](#sourcemapgeneratorprototypesetsourcecontentsourcefile-sourcecontent)
+    - [SourceMapGenerator.prototype.applySourceMap(sourceMapConsumer[, sourceFile[, sourceMapPath]])](#sourcemapgeneratorprototypeapplysourcemapsourcemapconsumer-sourcefile-sourcemappath)
+    - [SourceMapGenerator.prototype.toString()](#sourcemapgeneratorprototypetostring)
+  - [SourceNode](#sourcenode)
+    - [new SourceNode([line, column, source[, chunk[, name]]])](#new-sourcenodeline-column-source-chunk-name)
+    - [SourceNode.fromStringWithSourceMap(code, sourceMapConsumer[, relativePath])](#sourcenodefromstringwithsourcemapcode-sourcemapconsumer-relativepath)
+    - [SourceNode.prototype.add(chunk)](#sourcenodeprototypeaddchunk)
+    - [SourceNode.prototype.prepend(chunk)](#sourcenodeprototypeprependchunk)
+    - [SourceNode.prototype.setSourceContent(sourceFile, sourceContent)](#sourcenodeprototypesetsourcecontentsourcefile-sourcecontent)
+    - [SourceNode.prototype.walk(fn)](#sourcenodeprototypewalkfn)
+    - [SourceNode.prototype.walkSourceContents(fn)](#sourcenodeprototypewalksourcecontentsfn)
+    - [SourceNode.prototype.join(sep)](#sourcenodeprototypejoinsep)
+    - [SourceNode.prototype.replaceRight(pattern, replacement)](#sourcenodeprototypereplacerightpattern-replacement)
+    - [SourceNode.prototype.toString()](#sourcenodeprototypetostring)
+    - [SourceNode.prototype.toStringWithSourceMap([startOfSourceMap])](#sourcenodeprototypetostringwithsourcemapstartofsourcemap)
+
+<!-- END doctoc generated TOC please keep comment here to allow auto update -->
+
+## Examples
+
+### Consuming a source map
+
+```js
+var rawSourceMap = {
+  version: 3,
+  file: 'min.js',
+  names: ['bar', 'baz', 'n'],
+  sources: ['one.js', 'two.js'],
+  sourceRoot: 'http://example.com/www/js/',
+  mappings: 'CAAC,IAAI,IAAM,SAAUA,GAClB,OAAOC,IAAID;CCDb,IAAI,IAAM,SAAUE,GAClB,OAAOA'
+};
+
+var smc = new SourceMapConsumer(rawSourceMap);
+
+console.log(smc.sources);
+// [ 'http://example.com/www/js/one.js',
+//   'http://example.com/www/js/two.js' ]
+
+console.log(smc.originalPositionFor({
+  line: 2,
+  column: 28
+}));
+// { source: 'http://example.com/www/js/two.js',
+//   line: 2,
+//   column: 10,
+//   name: 'n' }
+
+console.log(smc.generatedPositionFor({
+  source: 'http://example.com/www/js/two.js',
+  line: 2,
+  column: 10
+}));
+// { line: 2, column: 28 }
+
+smc.eachMapping(function (m) {
+  // ...
+});
+```
+
+### Generating a source map
+
+In depth guide:
+[**Compiling to JavaScript, and Debugging with Source Maps**](https://hacks.mozilla.org/2013/05/compiling-to-javascript-and-debugging-with-source-maps/)
+
+#### With SourceNode (high level API)
+
+```js
+function compile(ast) {
+  switch (ast.type) {
+  case 'BinaryExpression':
+    return new SourceNode(
+      ast.location.line,
+      ast.location.column,
+      ast.location.source,
+      [compile(ast.left), " + ", compile(ast.right)]
+    );
+  case 'Literal':
+    return new SourceNode(
+      ast.location.line,
+      ast.location.column,
+      ast.location.source,
+      String(ast.value)
+    );
+  // ...
+  default:
+    throw new Error("Bad AST");
+  }
+}
+
+var ast = parse("40 + 2", "add.js");
+console.log(compile(ast).toStringWithSourceMap({
+  file: 'add.js'
+}));
+// { code: '40 + 2',
+//   map: [object SourceMapGenerator] }
+```
+
+#### With SourceMapGenerator (low level API)
+
+```js
+var map = new SourceMapGenerator({
+  file: "source-mapped.js"
+});
+
+map.addMapping({
+  generated: {
+    line: 10,
+    column: 35
+  },
+  source: "foo.js",
+  original: {
+    line: 33,
+    column: 2
+  },
+  name: "christopher"
+});
+
+console.log(map.toString());
+// '{"version":3,"file":"source-mapped.js","sources":["foo.js"],"names":["christopher"],"mappings":";;;;;;;;;mCAgCEA"}'
+```
+
+## API
+
+Get a reference to the module:
+
+```js
+// Node.js
+var sourceMap = require('source-map');
+
+// Browser builds
+var sourceMap = window.sourceMap;
+
+// Inside Firefox
+const sourceMap = require("devtools/toolkit/sourcemap/source-map.js");
+```
+
+### SourceMapConsumer
+
+A SourceMapConsumer instance represents a parsed source map which we can query
+for information about the original file positions by giving it a file position
+in the generated source.
+
+#### new SourceMapConsumer(rawSourceMap)
+
+The only parameter is the raw source map (either as a string which can be
+`JSON.parse`'d, or an object). According to the spec, source maps have the
+following attributes:
+
+* `version`: Which version of the source map spec this map is following.
+
+* `sources`: An array of URLs to the original source files.
+
+* `names`: An array of identifiers which can be referenced by individual
+  mappings.
+
+* `sourceRoot`: Optional. The URL root from which all sources are relative.
+
+* `sourcesContent`: Optional. An array of contents of the original source files.
+
+* `mappings`: A string of base64 VLQs which contain the actual mappings.
+
+* `file`: Optional. The generated filename this source map is associated with.
+
+```js
+var consumer = new sourceMap.SourceMapConsumer(rawSourceMapJsonData);
+```
+
+#### SourceMapConsumer.prototype.computeColumnSpans()
+
+Compute the last column for each generated mapping. The last column is
+inclusive.
+
+```js
+// Before:
+consumer.allGeneratedPositionsFor({ line: 2, source: "foo.coffee" })
+// [ { line: 2,
+//     column: 1 },
+//   { line: 2,
+//     column: 10 },
+//   { line: 2,
+//     column: 20 } ]
+
+consumer.computeColumnSpans();
+
+// After:
+consumer.allGeneratedPositionsFor({ line: 2, source: "foo.coffee" })
+// [ { line: 2,
+//     column: 1,
+//     lastColumn: 9 },
+//   { line: 2,
+//     column: 10,
+//     lastColumn: 19 },
+//   { line: 2,
+//     column: 20,
+//     lastColumn: Infinity } ]
+
+```
+
+#### SourceMapConsumer.prototype.originalPositionFor(generatedPosition)
+
+Returns the original source, line, and column information for the generated
+source's line and column positions provided. The only argument is an object with
+the following properties:
+
+* `line`: The line number in the generated source.  Line numbers in
+  this library are 1-based (note that the underlying source map
+  specification uses 0-based line numbers -- this library handles the
+  translation).
+
+* `column`: The column number in the generated source.  Column numbers
+  in this library are 0-based.
+
+* `bias`: Either `SourceMapConsumer.GREATEST_LOWER_BOUND` or
+  `SourceMapConsumer.LEAST_UPPER_BOUND`. Specifies whether to return the closest
+  element that is smaller than or greater than the one we are searching for,
+  respectively, if the exact element cannot be found.  Defaults to
+  `SourceMapConsumer.GREATEST_LOWER_BOUND`.
+
+and an object is returned with the following properties:
+
+* `source`: The original source file, or null if this information is not
+  available.
+
+* `line`: The line number in the original source, or null if this information is
+  not available.  The line number is 1-based.
+
+* `column`: The column number in the original source, or null if this
+  information is not available.  The column number is 0-based.
+
+* `name`: The original identifier, or null if this information is not available.
+
+```js
+consumer.originalPositionFor({ line: 2, column: 10 })
+// { source: 'foo.coffee',
+//   line: 2,
+//   column: 2,
+//   name: null }
+
+consumer.originalPositionFor({ line: 99999999999999999, column: 999999999999999 })
+// { source: null,
+//   line: null,
+//   column: null,
+//   name: null }
+```
+
+#### SourceMapConsumer.prototype.generatedPositionFor(originalPosition)
+
+Returns the generated line and column information for the original source,
+line, and column positions provided. The only argument is an object with
+the following properties:
+
+* `source`: The filename of the original source.
+
+* `line`: The line number in the original source.  The line number is
+  1-based.
+
+* `column`: The column number in the original source.  The column
+  number is 0-based.
+
+and an object is returned with the following properties:
+
+* `line`: The line number in the generated source, or null.  The line
+  number is 1-based.
+
+* `column`: The column number in the generated source, or null.  The
+  column number is 0-based.
+
+```js
+consumer.generatedPositionFor({ source: "example.js", line: 2, column: 10 })
+// { line: 1,
+//   column: 56 }
+```
+
+#### SourceMapConsumer.prototype.allGeneratedPositionsFor(originalPosition)
+
+Returns all generated line and column information for the original source, line,
+and column provided. If no column is provided, returns all mappings
+corresponding to a either the line we are searching for or the next closest line
+that has any mappings. Otherwise, returns all mappings corresponding to the
+given line and either the column we are searching for or the next closest column
+that has any offsets.
+
+The only argument is an object with the following properties:
+
+* `source`: The filename of the original source.
+
+* `line`: The line number in the original source.  The line number is
+  1-based.
+
+* `column`: Optional. The column number in the original source.  The
+  column number is 0-based.
+
+and an array of objects is returned, each with the following properties:
+
+* `line`: The line number in the generated source, or null.  The line
+  number is 1-based.
+
+* `column`: The column number in the generated source, or null.  The
+  column number is 0-based.
+
+```js
+consumer.allGeneratedpositionsfor({ line: 2, source: "foo.coffee" })
+// [ { line: 2,
+//     column: 1 },
+//   { line: 2,
+//     column: 10 },
+//   { line: 2,
+//     column: 20 } ]
+```
+
+#### SourceMapConsumer.prototype.hasContentsOfAllSources()
+
+Return true if we have the embedded source content for every source listed in
+the source map, false otherwise.
+
+In other words, if this method returns `true`, then
+`consumer.sourceContentFor(s)` will succeed for every source `s` in
+`consumer.sources`.
+
+```js
+// ...
+if (consumer.hasContentsOfAllSources()) {
+  consumerReadyCallback(consumer);
+} else {
+  fetchSources(consumer, consumerReadyCallback);
+}
+// ...
+```
+
+#### SourceMapConsumer.prototype.sourceContentFor(source[, returnNullOnMissing])
+
+Returns the original source content for the source provided. The only
+argument is the URL of the original source file.
+
+If the source content for the given source is not found, then an error is
+thrown. Optionally, pass `true` as the second param to have `null` returned
+instead.
+
+```js
+consumer.sources
+// [ "my-cool-lib.clj" ]
+
+consumer.sourceContentFor("my-cool-lib.clj")
+// "..."
+
+consumer.sourceContentFor("this is not in the source map");
+// Error: "this is not in the source map" is not in the source map
+
+consumer.sourceContentFor("this is not in the source map", true);
+// null
+```
+
+#### SourceMapConsumer.prototype.eachMapping(callback, context, order)
+
+Iterate over each mapping between an original source/line/column and a
+generated line/column in this source map.
+
+* `callback`: The function that is called with each mapping. Mappings have the
+  form `{ source, generatedLine, generatedColumn, originalLine, originalColumn,
+  name }`
+
+* `context`: Optional. If specified, this object will be the value of `this`
+  every time that `callback` is called.
+
+* `order`: Either `SourceMapConsumer.GENERATED_ORDER` or
+  `SourceMapConsumer.ORIGINAL_ORDER`. Specifies whether you want to iterate over
+  the mappings sorted by the generated file's line/column order or the
+  original's source/line/column order, respectively. Defaults to
+  `SourceMapConsumer.GENERATED_ORDER`.
+
+```js
+consumer.eachMapping(function (m) { console.log(m); })
+// ...
+// { source: 'illmatic.js',
+//   generatedLine: 1,
+//   generatedColumn: 0,
+//   originalLine: 1,
+//   originalColumn: 0,
+//   name: null }
+// { source: 'illmatic.js',
+//   generatedLine: 2,
+//   generatedColumn: 0,
+//   originalLine: 2,
+//   originalColumn: 0,
+//   name: null }
+// ...
+```
+### SourceMapGenerator
+
+An instance of the SourceMapGenerator represents a source map which is being
+built incrementally.
+
+#### new SourceMapGenerator([startOfSourceMap])
+
+You may pass an object with the following properties:
+
+* `file`: The filename of the generated source that this source map is
+  associated with.
+
+* `sourceRoot`: A root for all relative URLs in this source map.
+
+* `skipValidation`: Optional. When `true`, disables validation of mappings as
+  they are added. This can improve performance but should be used with
+  discretion, as a last resort. Even then, one should avoid using this flag when
+  running tests, if possible.
+
+```js
+var generator = new sourceMap.SourceMapGenerator({
+  file: "my-generated-javascript-file.js",
+  sourceRoot: "http://example.com/app/js/"
+});
+```
+
+#### SourceMapGenerator.fromSourceMap(sourceMapConsumer)
+
+Creates a new `SourceMapGenerator` from an existing `SourceMapConsumer` instance.
+
+* `sourceMapConsumer` The SourceMap.
+
+```js
+var generator = sourceMap.SourceMapGenerator.fromSourceMap(consumer);
+```
+
+#### SourceMapGenerator.prototype.addMapping(mapping)
+
+Add a single mapping from original source line and column to the generated
+source's line and column for this source map being created. The mapping object
+should have the following properties:
+
+* `generated`: An object with the generated line and column positions.
+
+* `original`: An object with the original line and column positions.
+
+* `source`: The original source file (relative to the sourceRoot).
+
+* `name`: An optional original token name for this mapping.
+
+```js
+generator.addMapping({
+  source: "module-one.scm",
+  original: { line: 128, column: 0 },
+  generated: { line: 3, column: 456 }
+})
+```
+
+#### SourceMapGenerator.prototype.setSourceContent(sourceFile, sourceContent)
+
+Set the source content for an original source file.
+
+* `sourceFile` the URL of the original source file.
+
+* `sourceContent` the content of the source file.
+
+```js
+generator.setSourceContent("module-one.scm",
+                           fs.readFileSync("path/to/module-one.scm"))
+```
+
+#### SourceMapGenerator.prototype.applySourceMap(sourceMapConsumer[, sourceFile[, sourceMapPath]])
+
+Applies a SourceMap for a source file to the SourceMap.
+Each mapping to the supplied source file is rewritten using the
+supplied SourceMap. Note: The resolution for the resulting mappings
+is the minimum of this map and the supplied map.
+
+* `sourceMapConsumer`: The SourceMap to be applied.
+
+* `sourceFile`: Optional. The filename of the source file.
+  If omitted, sourceMapConsumer.file will be used, if it exists.
+  Otherwise an error will be thrown.
+
+* `sourceMapPath`: Optional. The dirname of the path to the SourceMap
+  to be applied. If relative, it is relative to the SourceMap.
+
+  This parameter is needed when the two SourceMaps aren't in the same
+  directory, and the SourceMap to be applied contains relative source
+  paths. If so, those relative source paths need to be rewritten
+  relative to the SourceMap.
+
+  If omitted, it is assumed that both SourceMaps are in the same directory,
+  thus not needing any rewriting. (Supplying `'.'` has the same effect.)
+
+#### SourceMapGenerator.prototype.toString()
+
+Renders the source map being generated to a string.
+
+```js
+generator.toString()
+// '{"version":3,"sources":["module-one.scm"],"names":[],"mappings":"...snip...","file":"my-generated-javascript-file.js","sourceRoot":"http://example.com/app/js/"}'
+```
+
+### SourceNode
+
+SourceNodes provide a way to abstract over interpolating and/or concatenating
+snippets of generated JavaScript source code, while maintaining the line and
+column information associated between those snippets and the original source
+code. This is useful as the final intermediate representation a compiler might
+use before outputting the generated JS and source map.
+
+#### new SourceNode([line, column, source[, chunk[, name]]])
+
+* `line`: The original line number associated with this source node, or null if
+  it isn't associated with an original line.  The line number is 1-based.
+
+* `column`: The original column number associated with this source node, or null
+  if it isn't associated with an original column.  The column number
+  is 0-based.
+
+* `source`: The original source's filename; null if no filename is provided.
+
+* `chunk`: Optional. Is immediately passed to `SourceNode.prototype.add`, see
+  below.
+
+* `name`: Optional. The original identifier.
+
+```js
+var node = new SourceNode(1, 2, "a.cpp", [
+  new SourceNode(3, 4, "b.cpp", "extern int status;\n"),
+  new SourceNode(5, 6, "c.cpp", "std::string* make_string(size_t n);\n"),
+  new SourceNode(7, 8, "d.cpp", "int main(int argc, char** argv) {}\n"),
+]);
+```
+
+#### SourceNode.fromStringWithSourceMap(code, sourceMapConsumer[, relativePath])
+
+Creates a SourceNode from generated code and a SourceMapConsumer.
+
+* `code`: The generated code
+
+* `sourceMapConsumer` The SourceMap for the generated code
+
+* `relativePath` The optional path that relative sources in `sourceMapConsumer`
+  should be relative to.
+
+```js
+var consumer = new SourceMapConsumer(fs.readFileSync("path/to/my-file.js.map", "utf8"));
+var node = SourceNode.fromStringWithSourceMap(fs.readFileSync("path/to/my-file.js"),
+                                              consumer);
+```
+
+#### SourceNode.prototype.add(chunk)
+
+Add a chunk of generated JS to this source node.
+
+* `chunk`: A string snippet of generated JS code, another instance of
+   `SourceNode`, or an array where each member is one of those things.
+
+```js
+node.add(" + ");
+node.add(otherNode);
+node.add([leftHandOperandNode, " + ", rightHandOperandNode]);
+```
+
+#### SourceNode.prototype.prepend(chunk)
+
+Prepend a chunk of generated JS to this source node.
+
+* `chunk`: A string snippet of generated JS code, another instance of
+   `SourceNode`, or an array where each member is one of those things.
+
+```js
+node.prepend("/** Build Id: f783haef86324gf **/\n\n");
+```
+
+#### SourceNode.prototype.setSourceContent(sourceFile, sourceContent)
+
+Set the source content for a source file. This will be added to the
+`SourceMap` in the `sourcesContent` field.
+
+* `sourceFile`: The filename of the source file
+
+* `sourceContent`: The content of the source file
+
+```js
+node.setSourceContent("module-one.scm",
+                      fs.readFileSync("path/to/module-one.scm"))
+```
+
+#### SourceNode.prototype.walk(fn)
+
+Walk over the tree of JS snippets in this node and its children. The walking
+function is called once for each snippet of JS and is passed that snippet and
+the its original associated source's line/column location.
+
+* `fn`: The traversal function.
+
+```js
+var node = new SourceNode(1, 2, "a.js", [
+  new SourceNode(3, 4, "b.js", "uno"),
+  "dos",
+  [
+    "tres",
+    new SourceNode(5, 6, "c.js", "quatro")
+  ]
+]);
+
+node.walk(function (code, loc) { console.log("WALK:", code, loc); })
+// WALK: uno { source: 'b.js', line: 3, column: 4, name: null }
+// WALK: dos { source: 'a.js', line: 1, column: 2, name: null }
+// WALK: tres { source: 'a.js', line: 1, column: 2, name: null }
+// WALK: quatro { source: 'c.js', line: 5, column: 6, name: null }
+```
+
+#### SourceNode.prototype.walkSourceContents(fn)
+
+Walk over the tree of SourceNodes. The walking function is called for each
+source file content and is passed the filename and source content.
+
+* `fn`: The traversal function.
+
+```js
+var a = new SourceNode(1, 2, "a.js", "generated from a");
+a.setSourceContent("a.js", "original a");
+var b = new SourceNode(1, 2, "b.js", "generated from b");
+b.setSourceContent("b.js", "original b");
+var c = new SourceNode(1, 2, "c.js", "generated from c");
+c.setSourceContent("c.js", "original c");
+
+var node = new SourceNode(null, null, null, [a, b, c]);
+node.walkSourceContents(function (source, contents) { console.log("WALK:", source, ":", contents); })
+// WALK: a.js : original a
+// WALK: b.js : original b
+// WALK: c.js : original c
+```
+
+#### SourceNode.prototype.join(sep)
+
+Like `Array.prototype.join` except for SourceNodes. Inserts the separator
+between each of this source node's children.
+
+* `sep`: The separator.
+
+```js
+var lhs = new SourceNode(1, 2, "a.rs", "my_copy");
+var operand = new SourceNode(3, 4, "a.rs", "=");
+var rhs = new SourceNode(5, 6, "a.rs", "orig.clone()");
+
+var node = new SourceNode(null, null, null, [ lhs, operand, rhs ]);
+var joinedNode = node.join(" ");
+```
+
+#### SourceNode.prototype.replaceRight(pattern, replacement)
+
+Call `String.prototype.replace` on the very right-most source snippet. Useful
+for trimming white space from the end of a source node, etc.
+
+* `pattern`: The pattern to replace.
+
+* `replacement`: The thing to replace the pattern with.
+
+```js
+// Trim trailing white space.
+node.replaceRight(/\s*$/, "");
+```
+
+#### SourceNode.prototype.toString()
+
+Return the string representation of this source node. Walks over the tree and
+concatenates all the various snippets together to one string.
+
+```js
+var node = new SourceNode(1, 2, "a.js", [
+  new SourceNode(3, 4, "b.js", "uno"),
+  "dos",
+  [
+    "tres",
+    new SourceNode(5, 6, "c.js", "quatro")
+  ]
+]);
+
+node.toString()
+// 'unodostresquatro'
+```
+
+#### SourceNode.prototype.toStringWithSourceMap([startOfSourceMap])
+
+Returns the string representation of this tree of source nodes, plus a
+SourceMapGenerator which contains all the mappings between the generated and
+original sources.
+
+The arguments are the same as those to `new SourceMapGenerator`.
+
+```js
+var node = new SourceNode(1, 2, "a.js", [
+  new SourceNode(3, 4, "b.js", "uno"),
+  "dos",
+  [
+    "tres",
+    new SourceNode(5, 6, "c.js", "quatro")
+  ]
+]);
+
+node.toStringWithSourceMap({ file: "my-output-file.js" })
+// { code: 'unodostresquatro',
+//   map: [object SourceMapGenerator] }
+```

node_modules/terser/node_modules/source-map/lib/array-set.js

@@ -0,0 +1,121 @@
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var util = require('./util');
+var has = Object.prototype.hasOwnProperty;
+var hasNativeMap = typeof Map !== "undefined";
+
+/**
+ * A data structure which is a combination of an array and a set. Adding a new
+ * member is O(1), testing for membership is O(1), and finding the index of an
+ * element is O(1). Removing elements from the set is not supported. Only
+ * strings are supported for membership.
+ */
+function ArraySet() {
+  this._array = [];
+  this._set = hasNativeMap ? new Map() : Object.create(null);
+}
+
+/**
+ * Static method for creating ArraySet instances from an existing array.
+ */
+ArraySet.fromArray = function ArraySet_fromArray(aArray, aAllowDuplicates) {
+  var set = new ArraySet();
+  for (var i = 0, len = aArray.length; i < len; i++) {
+    set.add(aArray[i], aAllowDuplicates);
+  }
+  return set;
+};
+
+/**
+ * Return how many unique items are in this ArraySet. If duplicates have been
+ * added, than those do not count towards the size.
+ *
+ * @returns Number
+ */
+ArraySet.prototype.size = function ArraySet_size() {
+  return hasNativeMap ? this._set.size : Object.getOwnPropertyNames(this._set).length;
+};
+
+/**
+ * Add the given string to this set.
+ *
+ * @param String aStr
+ */
+ArraySet.prototype.add = function ArraySet_add(aStr, aAllowDuplicates) {
+  var sStr = hasNativeMap ? aStr : util.toSetString(aStr);
+  var isDuplicate = hasNativeMap ? this.has(aStr) : has.call(this._set, sStr);
+  var idx = this._array.length;
+  if (!isDuplicate || aAllowDuplicates) {
+    this._array.push(aStr);
+  }
+  if (!isDuplicate) {
+    if (hasNativeMap) {
+      this._set.set(aStr, idx);
+    } else {
+      this._set[sStr] = idx;
+    }
+  }
+};
+
+/**
+ * Is the given string a member of this set?
+ *
+ * @param String aStr
+ */
+ArraySet.prototype.has = function ArraySet_has(aStr) {
+  if (hasNativeMap) {
+    return this._set.has(aStr);
+  } else {
+    var sStr = util.toSetString(aStr);
+    return has.call(this._set, sStr);
+  }
+};
+
+/**
+ * What is the index of the given string in the array?
+ *
+ * @param String aStr
+ */
+ArraySet.prototype.indexOf = function ArraySet_indexOf(aStr) {
+  if (hasNativeMap) {
+    var idx = this._set.get(aStr);
+    if (idx >= 0) {
+        return idx;
+    }
+  } else {
+    var sStr = util.toSetString(aStr);
+    if (has.call(this._set, sStr)) {
+      return this._set[sStr];
+    }
+  }
+
+  throw new Error('"' + aStr + '" is not in the set.');
+};
+
+/**
+ * What is the element at the given index?
+ *
+ * @param Number aIdx
+ */
+ArraySet.prototype.at = function ArraySet_at(aIdx) {
+  if (aIdx >= 0 && aIdx < this._array.length) {
+    return this._array[aIdx];
+  }
+  throw new Error('No element indexed by ' + aIdx);
+};
+
+/**
+ * Returns the array representation of this set (which has the proper indices
+ * indicated by indexOf). Note that this is a copy of the internal array used
+ * for storing the members so that no one can mess with internal state.
+ */
+ArraySet.prototype.toArray = function ArraySet_toArray() {
+  return this._array.slice();
+};
+
+exports.ArraySet = ArraySet;

node_modules/terser/node_modules/source-map/lib/base64-vlq.js

@@ -0,0 +1,140 @@
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ *
+ * Based on the Base 64 VLQ implementation in Closure Compiler:
+ * https://code.google.com/p/closure-compiler/source/browse/trunk/src/com/google/debugging/sourcemap/Base64VLQ.java
+ *
+ * Copyright 2011 The Closure Compiler Authors. All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above
+ *    copyright notice, this list of conditions and the following
+ *    disclaimer in the documentation and/or other materials provided
+ *    with the distribution.
+ *  * Neither the name of Google Inc. nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+var base64 = require('./base64');
+
+// A single base 64 digit can contain 6 bits of data. For the base 64 variable
+// length quantities we use in the source map spec, the first bit is the sign,
+// the next four bits are the actual value, and the 6th bit is the
+// continuation bit. The continuation bit tells us whether there are more
+// digits in this value following this digit.
+//
+//   Continuation
+//   |    Sign
+//   |    |
+//   V    V
+//   101011
+
+var VLQ_BASE_SHIFT = 5;
+
+// binary: 100000
+var VLQ_BASE = 1 << VLQ_BASE_SHIFT;
+
+// binary: 011111
+var VLQ_BASE_MASK = VLQ_BASE - 1;
+
+// binary: 100000
+var VLQ_CONTINUATION_BIT = VLQ_BASE;
+
+/**
+ * Converts from a two-complement value to a value where the sign bit is
+ * placed in the least significant bit.  For example, as decimals:
+ *   1 becomes 2 (10 binary), -1 becomes 3 (11 binary)
+ *   2 becomes 4 (100 binary), -2 becomes 5 (101 binary)
+ */
+function toVLQSigned(aValue) {
+  return aValue < 0
+    ? ((-aValue) << 1) + 1
+    : (aValue << 1) + 0;
+}
+
+/**
+ * Converts to a two-complement value from a value where the sign bit is
+ * placed in the least significant bit.  For example, as decimals:
+ *   2 (10 binary) becomes 1, 3 (11 binary) becomes -1
+ *   4 (100 binary) becomes 2, 5 (101 binary) becomes -2
+ */
+function fromVLQSigned(aValue) {
+  var isNegative = (aValue & 1) === 1;
+  var shifted = aValue >> 1;
+  return isNegative
+    ? -shifted
+    : shifted;
+}
+
+/**
+ * Returns the base 64 VLQ encoded value.
+ */
+exports.encode = function base64VLQ_encode(aValue) {
+  var encoded = "";
+  var digit;
+
+  var vlq = toVLQSigned(aValue);
+
+  do {
+    digit = vlq & VLQ_BASE_MASK;
+    vlq >>>= VLQ_BASE_SHIFT;
+    if (vlq > 0) {
+      // There are still more digits in this value, so we must make sure the
+      // continuation bit is marked.
+      digit |= VLQ_CONTINUATION_BIT;
+    }
+    encoded += base64.encode(digit);
+  } while (vlq > 0);
+
+  return encoded;
+};
+
+/**
+ * Decodes the next base 64 VLQ value from the given string and returns the
+ * value and the rest of the string via the out parameter.
+ */
+exports.decode = function base64VLQ_decode(aStr, aIndex, aOutParam) {
+  var strLen = aStr.length;
+  var result = 0;
+  var shift = 0;
+  var continuation, digit;
+
+  do {
+    if (aIndex >= strLen) {
+      throw new Error("Expected more digits in base 64 VLQ value.");
+    }
+
+    digit = base64.decode(aStr.charCodeAt(aIndex++));
+    if (digit === -1) {
+      throw new Error("Invalid base64 digit: " + aStr.charAt(aIndex - 1));
+    }
+
+    continuation = !!(digit & VLQ_CONTINUATION_BIT);
+    digit &= VLQ_BASE_MASK;
+    result = result + (digit << shift);
+    shift += VLQ_BASE_SHIFT;
+  } while (continuation);
+
+  aOutParam.value = fromVLQSigned(result);
+  aOutParam.rest = aIndex;
+};

node_modules/terser/node_modules/source-map/lib/base64.js

@@ -0,0 +1,67 @@
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var intToCharMap = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'.split('');
+
+/**
+ * Encode an integer in the range of 0 to 63 to a single base 64 digit.
+ */
+exports.encode = function (number) {
+  if (0 <= number && number < intToCharMap.length) {
+    return intToCharMap[number];
+  }
+  throw new TypeError("Must be between 0 and 63: " + number);
+};
+
+/**
+ * Decode a single base 64 character code digit to an integer. Returns -1 on
+ * failure.
+ */
+exports.decode = function (charCode) {
+  var bigA = 65;     // 'A'
+  var bigZ = 90;     // 'Z'
+
+  var littleA = 97;  // 'a'
+  var littleZ = 122; // 'z'
+
+  var zero = 48;     // '0'
+  var nine = 57;     // '9'
+
+  var plus = 43;     // '+'
+  var slash = 47;    // '/'
+
+  var littleOffset = 26;
+  var numberOffset = 52;
+
+  // 0 - 25: ABCDEFGHIJKLMNOPQRSTUVWXYZ
+  if (bigA <= charCode && charCode <= bigZ) {
+    return (charCode - bigA);
+  }
+
+  // 26 - 51: abcdefghijklmnopqrstuvwxyz
+  if (littleA <= charCode && charCode <= littleZ) {
+    return (charCode - littleA + littleOffset);
+  }
+
+  // 52 - 61: 0123456789
+  if (zero <= charCode && charCode <= nine) {
+    return (charCode - zero + numberOffset);
+  }
+
+  // 62: +
+  if (charCode == plus) {
+    return 62;
+  }
+
+  // 63: /
+  if (charCode == slash) {
+    return 63;
+  }
+
+  // Invalid base64 digit.
+  return -1;
+};

node_modules/terser/node_modules/source-map/lib/binary-search.js

@@ -0,0 +1,111 @@
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+exports.GREATEST_LOWER_BOUND = 1;
+exports.LEAST_UPPER_BOUND = 2;
+
+/**
+ * Recursive implementation of binary search.
+ *
+ * @param aLow Indices here and lower do not contain the needle.
+ * @param aHigh Indices here and higher do not contain the needle.
+ * @param aNeedle The element being searched for.
+ * @param aHaystack The non-empty array being searched.
+ * @param aCompare Function which takes two elements and returns -1, 0, or 1.
+ * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
+ *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
+ *     closest element that is smaller than or greater than the one we are
+ *     searching for, respectively, if the exact element cannot be found.
+ */
+function recursiveSearch(aLow, aHigh, aNeedle, aHaystack, aCompare, aBias) {
+  // This function terminates when one of the following is true:
+  //
+  //   1. We find the exact element we are looking for.
+  //
+  //   2. We did not find the exact element, but we can return the index of
+  //      the next-closest element.
+  //
+  //   3. We did not find the exact element, and there is no next-closest
+  //      element than the one we are searching for, so we return -1.
+  var mid = Math.floor((aHigh - aLow) / 2) + aLow;
+  var cmp = aCompare(aNeedle, aHaystack[mid], true);
+  if (cmp === 0) {
+    // Found the element we are looking for.
+    return mid;
+  }
+  else if (cmp > 0) {
+    // Our needle is greater than aHaystack[mid].
+    if (aHigh - mid > 1) {
+      // The element is in the upper half.
+      return recursiveSearch(mid, aHigh, aNeedle, aHaystack, aCompare, aBias);
+    }
+
+    // The exact needle element was not found in this haystack. Determine if
+    // we are in termination case (3) or (2) and return the appropriate thing.
+    if (aBias == exports.LEAST_UPPER_BOUND) {
+      return aHigh < aHaystack.length ? aHigh : -1;
+    } else {
+      return mid;
+    }
+  }
+  else {
+    // Our needle is less than aHaystack[mid].
+    if (mid - aLow > 1) {
+      // The element is in the lower half.
+      return recursiveSearch(aLow, mid, aNeedle, aHaystack, aCompare, aBias);
+    }
+
+    // we are in termination case (3) or (2) and return the appropriate thing.
+    if (aBias == exports.LEAST_UPPER_BOUND) {
+      return mid;
+    } else {
+      return aLow < 0 ? -1 : aLow;
+    }
+  }
+}
+
+/**
+ * This is an implementation of binary search which will always try and return
+ * the index of the closest element if there is no exact hit. This is because
+ * mappings between original and generated line/col pairs are single points,
+ * and there is an implicit region between each of them, so a miss just means
+ * that you aren't on the very start of a region.
+ *
+ * @param aNeedle The element you are looking for.
+ * @param aHaystack The array that is being searched.
+ * @param aCompare A function which takes the needle and an element in the
+ *     array and returns -1, 0, or 1 depending on whether the needle is less
+ *     than, equal to, or greater than the element, respectively.
+ * @param aBias Either 'binarySearch.GREATEST_LOWER_BOUND' or
+ *     'binarySearch.LEAST_UPPER_BOUND'. Specifies whether to return the
+ *     closest element that is smaller than or greater than the one we are
+ *     searching for, respectively, if the exact element cannot be found.
+ *     Defaults to 'binarySearch.GREATEST_LOWER_BOUND'.
+ */
+exports.search = function search(aNeedle, aHaystack, aCompare, aBias) {
+  if (aHaystack.length === 0) {
+    return -1;
+  }
+
+  var index = recursiveSearch(-1, aHaystack.length, aNeedle, aHaystack,
+                              aCompare, aBias || exports.GREATEST_LOWER_BOUND);
+  if (index < 0) {
+    return -1;
+  }
+
+  // We have found either the exact element, or the next-closest element than
+  // the one we are searching for. However, there may be more than one such
+  // element. Make sure we always return the smallest of these.
+  while (index - 1 >= 0) {
+    if (aCompare(aHaystack[index], aHaystack[index - 1], true) !== 0) {
+      break;
+    }
+    --index;
+  }
+
+  return index;
+};

node_modules/terser/node_modules/source-map/lib/mapping-list.js

@@ -0,0 +1,79 @@
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2014 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var util = require('./util');
+
+/**
+ * Determine whether mappingB is after mappingA with respect to generated
+ * position.
+ */
+function generatedPositionAfter(mappingA, mappingB) {
+  // Optimized for most common case
+  var lineA = mappingA.generatedLine;
+  var lineB = mappingB.generatedLine;
+  var columnA = mappingA.generatedColumn;
+  var columnB = mappingB.generatedColumn;
+  return lineB > lineA || lineB == lineA && columnB >= columnA ||
+         util.compareByGeneratedPositionsInflated(mappingA, mappingB) <= 0;
+}
+
+/**
+ * A data structure to provide a sorted view of accumulated mappings in a
+ * performance conscious manner. It trades a neglibable overhead in general
+ * case for a large speedup in case of mappings being added in order.
+ */
+function MappingList() {
+  this._array = [];
+  this._sorted = true;
+  // Serves as infimum
+  this._last = {generatedLine: -1, generatedColumn: 0};
+}
+
+/**
+ * Iterate through internal items. This method takes the same arguments that
+ * `Array.prototype.forEach` takes.
+ *
+ * NOTE: The order of the mappings is NOT guaranteed.
+ */
+MappingList.prototype.unsortedForEach =
+  function MappingList_forEach(aCallback, aThisArg) {
+    this._array.forEach(aCallback, aThisArg);
+  };
+
+/**
+ * Add the given source mapping.
+ *
+ * @param Object aMapping
+ */
+MappingList.prototype.add = function MappingList_add(aMapping) {
+  if (generatedPositionAfter(this._last, aMapping)) {
+    this._last = aMapping;
+    this._array.push(aMapping);
+  } else {
+    this._sorted = false;
+    this._array.push(aMapping);
+  }
+};
+
+/**
+ * Returns the flat, sorted array of mappings. The mappings are sorted by
+ * generated position.
+ *
+ * WARNING: This method returns internal data without copying, for
+ * performance. The return value must NOT be mutated, and should be treated as
+ * an immutable borrow. If you want to take ownership, you must make your own
+ * copy.
+ */
+MappingList.prototype.toArray = function MappingList_toArray() {
+  if (!this._sorted) {
+    this._array.sort(util.compareByGeneratedPositionsInflated);
+    this._sorted = true;
+  }
+  return this._array;
+};
+
+exports.MappingList = MappingList;

node_modules/terser/node_modules/source-map/lib/quick-sort.js

@@ -0,0 +1,114 @@
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+// It turns out that some (most?) JavaScript engines don't self-host
+// `Array.prototype.sort`. This makes sense because C++ will likely remain
+// faster than JS when doing raw CPU-intensive sorting. However, when using a
+// custom comparator function, calling back and forth between the VM's C++ and
+// JIT'd JS is rather slow *and* loses JIT type information, resulting in
+// worse generated code for the comparator function than would be optimal. In
+// fact, when sorting with a comparator, these costs outweigh the benefits of
+// sorting in C++. By using our own JS-implemented Quick Sort (below), we get
+// a ~3500ms mean speed-up in `bench/bench.html`.
+
+/**
+ * Swap the elements indexed by `x` and `y` in the array `ary`.
+ *
+ * @param {Array} ary
+ *        The array.
+ * @param {Number} x
+ *        The index of the first item.
+ * @param {Number} y
+ *        The index of the second item.
+ */
+function swap(ary, x, y) {
+  var temp = ary[x];
+  ary[x] = ary[y];
+  ary[y] = temp;
+}
+
+/**
+ * Returns a random integer within the range `low .. high` inclusive.
+ *
+ * @param {Number} low
+ *        The lower bound on the range.
+ * @param {Number} high
+ *        The upper bound on the range.
+ */
+function randomIntInRange(low, high) {
+  return Math.round(low + (Math.random() * (high - low)));
+}
+
+/**
+ * The Quick Sort algorithm.
+ *
+ * @param {Array} ary
+ *        An array to sort.
+ * @param {function} comparator
+ *        Function to use to compare two items.
+ * @param {Number} p
+ *        Start index of the array
+ * @param {Number} r
+ *        End index of the array
+ */
+function doQuickSort(ary, comparator, p, r) {
+  // If our lower bound is less than our upper bound, we (1) partition the
+  // array into two pieces and (2) recurse on each half. If it is not, this is
+  // the empty array and our base case.
+
+  if (p < r) {
+    // (1) Partitioning.
+    //
+    // The partitioning chooses a pivot between `p` and `r` and moves all
+    // elements that are less than or equal to the pivot to the before it, and
+    // all the elements that are greater than it after it. The effect is that
+    // once partition is done, the pivot is in the exact place it will be when
+    // the array is put in sorted order, and it will not need to be moved
+    // again. This runs in O(n) time.
+
+    // Always choose a random pivot so that an input array which is reverse
+    // sorted does not cause O(n^2) running time.
+    var pivotIndex = randomIntInRange(p, r);
+    var i = p - 1;
+
+    swap(ary, pivotIndex, r);
+    var pivot = ary[r];
+
+    // Immediately after `j` is incremented in this loop, the following hold
+    // true:
+    //
+    //   * Every element in `ary[p .. i]` is less than or equal to the pivot.
+    //
+    //   * Every element in `ary[i+1 .. j-1]` is greater than the pivot.
+    for (var j = p; j < r; j++) {
+      if (comparator(ary[j], pivot) <= 0) {
+        i += 1;
+        swap(ary, i, j);
+      }
+    }
+
+    swap(ary, i + 1, j);
+    var q = i + 1;
+
+    // (2) Recurse on each half.
+
+    doQuickSort(ary, comparator, p, q - 1);
+    doQuickSort(ary, comparator, q + 1, r);
+  }
+}
+
+/**
+ * Sort the given array in-place with the given comparator function.
+ *
+ * @param {Array} ary
+ *        An array to sort.
+ * @param {function} comparator
+ *        Function to use to compare two items.
+ */
+exports.quickSort = function (ary, comparator) {
+  doQuickSort(ary, comparator, 0, ary.length - 1);
+};

node_modules/terser/node_modules/source-map/lib/source-map-generator.js

@@ -0,0 +1,425 @@
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var base64VLQ = require('./base64-vlq');
+var util = require('./util');
+var ArraySet = require('./array-set').ArraySet;
+var MappingList = require('./mapping-list').MappingList;
+
+/**
+ * An instance of the SourceMapGenerator represents a source map which is
+ * being built incrementally. You may pass an object with the following
+ * properties:
+ *
+ *   - file: The filename of the generated source.
+ *   - sourceRoot: A root for all relative URLs in this source map.
+ */
+function SourceMapGenerator(aArgs) {
+  if (!aArgs) {
+    aArgs = {};
+  }
+  this._file = util.getArg(aArgs, 'file', null);
+  this._sourceRoot = util.getArg(aArgs, 'sourceRoot', null);
+  this._skipValidation = util.getArg(aArgs, 'skipValidation', false);
+  this._sources = new ArraySet();
+  this._names = new ArraySet();
+  this._mappings = new MappingList();
+  this._sourcesContents = null;
+}
+
+SourceMapGenerator.prototype._version = 3;
+
+/**
+ * Creates a new SourceMapGenerator based on a SourceMapConsumer
+ *
+ * @param aSourceMapConsumer The SourceMap.
+ */
+SourceMapGenerator.fromSourceMap =
+  function SourceMapGenerator_fromSourceMap(aSourceMapConsumer) {
+    var sourceRoot = aSourceMapConsumer.sourceRoot;
+    var generator = new SourceMapGenerator({
+      file: aSourceMapConsumer.file,
+      sourceRoot: sourceRoot
+    });
+    aSourceMapConsumer.eachMapping(function (mapping) {
+      var newMapping = {
+        generated: {
+          line: mapping.generatedLine,
+          column: mapping.generatedColumn
+        }
+      };
+
+      if (mapping.source != null) {
+        newMapping.source = mapping.source;
+        if (sourceRoot != null) {
+          newMapping.source = util.relative(sourceRoot, newMapping.source);
+        }
+
+        newMapping.original = {
+          line: mapping.originalLine,
+          column: mapping.originalColumn
+        };
+
+        if (mapping.name != null) {
+          newMapping.name = mapping.name;
+        }
+      }
+
+      generator.addMapping(newMapping);
+    });
+    aSourceMapConsumer.sources.forEach(function (sourceFile) {
+      var sourceRelative = sourceFile;
+      if (sourceRoot !== null) {
+        sourceRelative = util.relative(sourceRoot, sourceFile);
+      }
+
+      if (!generator._sources.has(sourceRelative)) {
+        generator._sources.add(sourceRelative);
+      }
+
+      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+      if (content != null) {
+        generator.setSourceContent(sourceFile, content);
+      }
+    });
+    return generator;
+  };
+
+/**
+ * Add a single mapping from original source line and column to the generated
+ * source's line and column for this source map being created. The mapping
+ * object should have the following properties:
+ *
+ *   - generated: An object with the generated line and column positions.
+ *   - original: An object with the original line and column positions.
+ *   - source: The original source file (relative to the sourceRoot).
+ *   - name: An optional original token name for this mapping.
+ */
+SourceMapGenerator.prototype.addMapping =
+  function SourceMapGenerator_addMapping(aArgs) {
+    var generated = util.getArg(aArgs, 'generated');
+    var original = util.getArg(aArgs, 'original', null);
+    var source = util.getArg(aArgs, 'source', null);
+    var name = util.getArg(aArgs, 'name', null);
+
+    if (!this._skipValidation) {
+      this._validateMapping(generated, original, source, name);
+    }
+
+    if (source != null) {
+      source = String(source);
+      if (!this._sources.has(source)) {
+        this._sources.add(source);
+      }
+    }
+
+    if (name != null) {
+      name = String(name);
+      if (!this._names.has(name)) {
+        this._names.add(name);
+      }
+    }
+
+    this._mappings.add({
+      generatedLine: generated.line,
+      generatedColumn: generated.column,
+      originalLine: original != null && original.line,
+      originalColumn: original != null && original.column,
+      source: source,
+      name: name
+    });
+  };
+
+/**
+ * Set the source content for a source file.
+ */
+SourceMapGenerator.prototype.setSourceContent =
+  function SourceMapGenerator_setSourceContent(aSourceFile, aSourceContent) {
+    var source = aSourceFile;
+    if (this._sourceRoot != null) {
+      source = util.relative(this._sourceRoot, source);
+    }
+
+    if (aSourceContent != null) {
+      // Add the source content to the _sourcesContents map.
+      // Create a new _sourcesContents map if the property is null.
+      if (!this._sourcesContents) {
+        this._sourcesContents = Object.create(null);
+      }
+      this._sourcesContents[util.toSetString(source)] = aSourceContent;
+    } else if (this._sourcesContents) {
+      // Remove the source file from the _sourcesContents map.
+      // If the _sourcesContents map is empty, set the property to null.
+      delete this._sourcesContents[util.toSetString(source)];
+      if (Object.keys(this._sourcesContents).length === 0) {
+        this._sourcesContents = null;
+      }
+    }
+  };
+
+/**
+ * Applies the mappings of a sub-source-map for a specific source file to the
+ * source map being generated. Each mapping to the supplied source file is
+ * rewritten using the supplied source map. Note: The resolution for the
+ * resulting mappings is the minimium of this map and the supplied map.
+ *
+ * @param aSourceMapConsumer The source map to be applied.
+ * @param aSourceFile Optional. The filename of the source file.
+ *        If omitted, SourceMapConsumer's file property will be used.
+ * @param aSourceMapPath Optional. The dirname of the path to the source map
+ *        to be applied. If relative, it is relative to the SourceMapConsumer.
+ *        This parameter is needed when the two source maps aren't in the same
+ *        directory, and the source map to be applied contains relative source
+ *        paths. If so, those relative source paths need to be rewritten
+ *        relative to the SourceMapGenerator.
+ */
+SourceMapGenerator.prototype.applySourceMap =
+  function SourceMapGenerator_applySourceMap(aSourceMapConsumer, aSourceFile, aSourceMapPath) {
+    var sourceFile = aSourceFile;
+    // If aSourceFile is omitted, we will use the file property of the SourceMap
+    if (aSourceFile == null) {
+      if (aSourceMapConsumer.file == null) {
+        throw new Error(
+          'SourceMapGenerator.prototype.applySourceMap requires either an explicit source file, ' +
+          'or the source map\'s "file" property. Both were omitted.'
+        );
+      }
+      sourceFile = aSourceMapConsumer.file;
+    }
+    var sourceRoot = this._sourceRoot;
+    // Make "sourceFile" relative if an absolute Url is passed.
+    if (sourceRoot != null) {
+      sourceFile = util.relative(sourceRoot, sourceFile);
+    }
+    // Applying the SourceMap can add and remove items from the sources and
+    // the names array.
+    var newSources = new ArraySet();
+    var newNames = new ArraySet();
+
+    // Find mappings for the "sourceFile"
+    this._mappings.unsortedForEach(function (mapping) {
+      if (mapping.source === sourceFile && mapping.originalLine != null) {
+        // Check if it can be mapped by the source map, then update the mapping.
+        var original = aSourceMapConsumer.originalPositionFor({
+          line: mapping.originalLine,
+          column: mapping.originalColumn
+        });
+        if (original.source != null) {
+          // Copy mapping
+          mapping.source = original.source;
+          if (aSourceMapPath != null) {
+            mapping.source = util.join(aSourceMapPath, mapping.source)
+          }
+          if (sourceRoot != null) {
+            mapping.source = util.relative(sourceRoot, mapping.source);
+          }
+          mapping.originalLine = original.line;
+          mapping.originalColumn = original.column;
+          if (original.name != null) {
+            mapping.name = original.name;
+          }
+        }
+      }
+
+      var source = mapping.source;
+      if (source != null && !newSources.has(source)) {
+        newSources.add(source);
+      }
+
+      var name = mapping.name;
+      if (name != null && !newNames.has(name)) {
+        newNames.add(name);
+      }
+
+    }, this);
+    this._sources = newSources;
+    this._names = newNames;
+
+    // Copy sourcesContents of applied map.
+    aSourceMapConsumer.sources.forEach(function (sourceFile) {
+      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+      if (content != null) {
+        if (aSourceMapPath != null) {
+          sourceFile = util.join(aSourceMapPath, sourceFile);
+        }
+        if (sourceRoot != null) {
+          sourceFile = util.relative(sourceRoot, sourceFile);
+        }
+        this.setSourceContent(sourceFile, content);
+      }
+    }, this);
+  };
+
+/**
+ * A mapping can have one of the three levels of data:
+ *
+ *   1. Just the generated position.
+ *   2. The Generated position, original position, and original source.
+ *   3. Generated and original position, original source, as well as a name
+ *      token.
+ *
+ * To maintain consistency, we validate that any new mapping being added falls
+ * in to one of these categories.
+ */
+SourceMapGenerator.prototype._validateMapping =
+  function SourceMapGenerator_validateMapping(aGenerated, aOriginal, aSource,
+                                              aName) {
+    // When aOriginal is truthy but has empty values for .line and .column,
+    // it is most likely a programmer error. In this case we throw a very
+    // specific error message to try to guide them the right way.
+    // For example: https://github.com/Polymer/polymer-bundler/pull/519
+    if (aOriginal && typeof aOriginal.line !== 'number' && typeof aOriginal.column !== 'number') {
+        throw new Error(
+            'original.line and original.column are not numbers -- you probably meant to omit ' +
+            'the original mapping entirely and only map the generated position. If so, pass ' +
+            'null for the original mapping instead of an object with empty or null values.'
+        );
+    }
+
+    if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
+        && aGenerated.line > 0 && aGenerated.column >= 0
+        && !aOriginal && !aSource && !aName) {
+      // Case 1.
+      return;
+    }
+    else if (aGenerated && 'line' in aGenerated && 'column' in aGenerated
+             && aOriginal && 'line' in aOriginal && 'column' in aOriginal
+             && aGenerated.line > 0 && aGenerated.column >= 0
+             && aOriginal.line > 0 && aOriginal.column >= 0
+             && aSource) {
+      // Cases 2 and 3.
+      return;
+    }
+    else {
+      throw new Error('Invalid mapping: ' + JSON.stringify({
+        generated: aGenerated,
+        source: aSource,
+        original: aOriginal,
+        name: aName
+      }));
+    }
+  };
+
+/**
+ * Serialize the accumulated mappings in to the stream of base 64 VLQs
+ * specified by the source map format.
+ */
+SourceMapGenerator.prototype._serializeMappings =
+  function SourceMapGenerator_serializeMappings() {
+    var previousGeneratedColumn = 0;
+    var previousGeneratedLine = 1;
+    var previousOriginalColumn = 0;
+    var previousOriginalLine = 0;
+    var previousName = 0;
+    var previousSource = 0;
+    var result = '';
+    var next;
+    var mapping;
+    var nameIdx;
+    var sourceIdx;
+
+    var mappings = this._mappings.toArray();
+    for (var i = 0, len = mappings.length; i < len; i++) {
+      mapping = mappings[i];
+      next = ''
+
+      if (mapping.generatedLine !== previousGeneratedLine) {
+        previousGeneratedColumn = 0;
+        while (mapping.generatedLine !== previousGeneratedLine) {
+          next += ';';
+          previousGeneratedLine++;
+        }
+      }
+      else {
+        if (i > 0) {
+          if (!util.compareByGeneratedPositionsInflated(mapping, mappings[i - 1])) {
+            continue;
+          }
+          next += ',';
+        }
+      }
+
+      next += base64VLQ.encode(mapping.generatedColumn
+                                 - previousGeneratedColumn);
+      previousGeneratedColumn = mapping.generatedColumn;
+
+      if (mapping.source != null) {
+        sourceIdx = this._sources.indexOf(mapping.source);
+        next += base64VLQ.encode(sourceIdx - previousSource);
+        previousSource = sourceIdx;
+
+        // lines are stored 0-based in SourceMap spec version 3
+        next += base64VLQ.encode(mapping.originalLine - 1
+                                   - previousOriginalLine);
+        previousOriginalLine = mapping.originalLine - 1;
+
+        next += base64VLQ.encode(mapping.originalColumn
+                                   - previousOriginalColumn);
+        previousOriginalColumn = mapping.originalColumn;
+
+        if (mapping.name != null) {
+          nameIdx = this._names.indexOf(mapping.name);
+          next += base64VLQ.encode(nameIdx - previousName);
+          previousName = nameIdx;
+        }
+      }
+
+      result += next;
+    }
+
+    return result;
+  };
+
+SourceMapGenerator.prototype._generateSourcesContent =
+  function SourceMapGenerator_generateSourcesContent(aSources, aSourceRoot) {
+    return aSources.map(function (source) {
+      if (!this._sourcesContents) {
+        return null;
+      }
+      if (aSourceRoot != null) {
+        source = util.relative(aSourceRoot, source);
+      }
+      var key = util.toSetString(source);
+      return Object.prototype.hasOwnProperty.call(this._sourcesContents, key)
+        ? this._sourcesContents[key]
+        : null;
+    }, this);
+  };
+
+/**
+ * Externalize the source map.
+ */
+SourceMapGenerator.prototype.toJSON =
+  function SourceMapGenerator_toJSON() {
+    var map = {
+      version: this._version,
+      sources: this._sources.toArray(),
+      names: this._names.toArray(),
+      mappings: this._serializeMappings()
+    };
+    if (this._file != null) {
+      map.file = this._file;
+    }
+    if (this._sourceRoot != null) {
+      map.sourceRoot = this._sourceRoot;
+    }
+    if (this._sourcesContents) {
+      map.sourcesContent = this._generateSourcesContent(map.sources, map.sourceRoot);
+    }
+
+    return map;
+  };
+
+/**
+ * Render the source map being generated to a string.
+ */
+SourceMapGenerator.prototype.toString =
+  function SourceMapGenerator_toString() {
+    return JSON.stringify(this.toJSON());
+  };
+
+exports.SourceMapGenerator = SourceMapGenerator;

node_modules/terser/node_modules/source-map/lib/source-node.js

@@ -0,0 +1,413 @@
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+var SourceMapGenerator = require('./source-map-generator').SourceMapGenerator;
+var util = require('./util');
+
+// Matches a Windows-style `\r\n` newline or a `\n` newline used by all other
+// operating systems these days (capturing the result).
+var REGEX_NEWLINE = /(\r?\n)/;
+
+// Newline character code for charCodeAt() comparisons
+var NEWLINE_CODE = 10;
+
+// Private symbol for identifying `SourceNode`s when multiple versions of
+// the source-map library are loaded. This MUST NOT CHANGE across
+// versions!
+var isSourceNode = "$$$isSourceNode$$$";
+
+/**
+ * SourceNodes provide a way to abstract over interpolating/concatenating
+ * snippets of generated JavaScript source code while maintaining the line and
+ * column information associated with the original source code.
+ *
+ * @param aLine The original line number.
+ * @param aColumn The original column number.
+ * @param aSource The original source's filename.
+ * @param aChunks Optional. An array of strings which are snippets of
+ *        generated JS, or other SourceNodes.
+ * @param aName The original identifier.
+ */
+function SourceNode(aLine, aColumn, aSource, aChunks, aName) {
+  this.children = [];
+  this.sourceContents = {};
+  this.line = aLine == null ? null : aLine;
+  this.column = aColumn == null ? null : aColumn;
+  this.source = aSource == null ? null : aSource;
+  this.name = aName == null ? null : aName;
+  this[isSourceNode] = true;
+  if (aChunks != null) this.add(aChunks);
+}
+
+/**
+ * Creates a SourceNode from generated code and a SourceMapConsumer.
+ *
+ * @param aGeneratedCode The generated code
+ * @param aSourceMapConsumer The SourceMap for the generated code
+ * @param aRelativePath Optional. The path that relative sources in the
+ *        SourceMapConsumer should be relative to.
+ */
+SourceNode.fromStringWithSourceMap =
+  function SourceNode_fromStringWithSourceMap(aGeneratedCode, aSourceMapConsumer, aRelativePath) {
+    // The SourceNode we want to fill with the generated code
+    // and the SourceMap
+    var node = new SourceNode();
+
+    // All even indices of this array are one line of the generated code,
+    // while all odd indices are the newlines between two adjacent lines
+    // (since `REGEX_NEWLINE` captures its match).
+    // Processed fragments are accessed by calling `shiftNextLine`.
+    var remainingLines = aGeneratedCode.split(REGEX_NEWLINE);
+    var remainingLinesIndex = 0;
+    var shiftNextLine = function() {
+      var lineContents = getNextLine();
+      // The last line of a file might not have a newline.
+      var newLine = getNextLine() || "";
+      return lineContents + newLine;
+
+      function getNextLine() {
+        return remainingLinesIndex < remainingLines.length ?
+            remainingLines[remainingLinesIndex++] : undefined;
+      }
+    };
+
+    // We need to remember the position of "remainingLines"
+    var lastGeneratedLine = 1, lastGeneratedColumn = 0;
+
+    // The generate SourceNodes we need a code range.
+    // To extract it current and last mapping is used.
+    // Here we store the last mapping.
+    var lastMapping = null;
+
+    aSourceMapConsumer.eachMapping(function (mapping) {
+      if (lastMapping !== null) {
+        // We add the code from "lastMapping" to "mapping":
+        // First check if there is a new line in between.
+        if (lastGeneratedLine < mapping.generatedLine) {
+          // Associate first line with "lastMapping"
+          addMappingWithCode(lastMapping, shiftNextLine());
+          lastGeneratedLine++;
+          lastGeneratedColumn = 0;
+          // The remaining code is added without mapping
+        } else {
+          // There is no new line in between.
+          // Associate the code between "lastGeneratedColumn" and
+          // "mapping.generatedColumn" with "lastMapping"
+          var nextLine = remainingLines[remainingLinesIndex] || '';
+          var code = nextLine.substr(0, mapping.generatedColumn -
+                                        lastGeneratedColumn);
+          remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn -
+                                              lastGeneratedColumn);
+          lastGeneratedColumn = mapping.generatedColumn;
+          addMappingWithCode(lastMapping, code);
+          // No more remaining code, continue
+          lastMapping = mapping;
+          return;
+        }
+      }
+      // We add the generated code until the first mapping
+      // to the SourceNode without any mapping.
+      // Each line is added as separate string.
+      while (lastGeneratedLine < mapping.generatedLine) {
+        node.add(shiftNextLine());
+        lastGeneratedLine++;
+      }
+      if (lastGeneratedColumn < mapping.generatedColumn) {
+        var nextLine = remainingLines[remainingLinesIndex] || '';
+        node.add(nextLine.substr(0, mapping.generatedColumn));
+        remainingLines[remainingLinesIndex] = nextLine.substr(mapping.generatedColumn);
+        lastGeneratedColumn = mapping.generatedColumn;
+      }
+      lastMapping = mapping;
+    }, this);
+    // We have processed all mappings.
+    if (remainingLinesIndex < remainingLines.length) {
+      if (lastMapping) {
+        // Associate the remaining code in the current line with "lastMapping"
+        addMappingWithCode(lastMapping, shiftNextLine());
+      }
+      // and add the remaining lines without any mapping
+      node.add(remainingLines.splice(remainingLinesIndex).join(""));
+    }
+
+    // Copy sourcesContent into SourceNode
+    aSourceMapConsumer.sources.forEach(function (sourceFile) {
+      var content = aSourceMapConsumer.sourceContentFor(sourceFile);
+      if (content != null) {
+        if (aRelativePath != null) {
+          sourceFile = util.join(aRelativePath, sourceFile);
+        }
+        node.setSourceContent(sourceFile, content);
+      }
+    });
+
+    return node;
+
+    function addMappingWithCode(mapping, code) {
+      if (mapping === null || mapping.source === undefined) {
+        node.add(code);
+      } else {
+        var source = aRelativePath
+          ? util.join(aRelativePath, mapping.source)
+          : mapping.source;
+        node.add(new SourceNode(mapping.originalLine,
+                                mapping.originalColumn,
+                                source,
+                                code,
+                                mapping.name));
+      }
+    }
+  };
+
+/**
+ * Add a chunk of generated JS to this source node.
+ *
+ * @param aChunk A string snippet of generated JS code, another instance of
+ *        SourceNode, or an array where each member is one of those things.
+ */
+SourceNode.prototype.add = function SourceNode_add(aChunk) {
+  if (Array.isArray(aChunk)) {
+    aChunk.forEach(function (chunk) {
+      this.add(chunk);
+    }, this);
+  }
+  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
+    if (aChunk) {
+      this.children.push(aChunk);
+    }
+  }
+  else {
+    throw new TypeError(
+      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
+    );
+  }
+  return this;
+};
+
+/**
+ * Add a chunk of generated JS to the beginning of this source node.
+ *
+ * @param aChunk A string snippet of generated JS code, another instance of
+ *        SourceNode, or an array where each member is one of those things.
+ */
+SourceNode.prototype.prepend = function SourceNode_prepend(aChunk) {
+  if (Array.isArray(aChunk)) {
+    for (var i = aChunk.length-1; i >= 0; i--) {
+      this.prepend(aChunk[i]);
+    }
+  }
+  else if (aChunk[isSourceNode] || typeof aChunk === "string") {
+    this.children.unshift(aChunk);
+  }
+  else {
+    throw new TypeError(
+      "Expected a SourceNode, string, or an array of SourceNodes and strings. Got " + aChunk
+    );
+  }
+  return this;
+};
+
+/**
+ * Walk over the tree of JS snippets in this node and its children. The
+ * walking function is called once for each snippet of JS and is passed that
+ * snippet and the its original associated source's line/column location.
+ *
+ * @param aFn The traversal function.
+ */
+SourceNode.prototype.walk = function SourceNode_walk(aFn) {
+  var chunk;
+  for (var i = 0, len = this.children.length; i < len; i++) {
+    chunk = this.children[i];
+    if (chunk[isSourceNode]) {
+      chunk.walk(aFn);
+    }
+    else {
+      if (chunk !== '') {
+        aFn(chunk, { source: this.source,
+                     line: this.line,
+                     column: this.column,
+                     name: this.name });
+      }
+    }
+  }
+};
+
+/**
+ * Like `String.prototype.join` except for SourceNodes. Inserts `aStr` between
+ * each of `this.children`.
+ *
+ * @param aSep The separator.
+ */
+SourceNode.prototype.join = function SourceNode_join(aSep) {
+  var newChildren;
+  var i;
+  var len = this.children.length;
+  if (len > 0) {
+    newChildren = [];
+    for (i = 0; i < len-1; i++) {
+      newChildren.push(this.children[i]);
+      newChildren.push(aSep);
+    }
+    newChildren.push(this.children[i]);
+    this.children = newChildren;
+  }
+  return this;
+};
+
+/**
+ * Call String.prototype.replace on the very right-most source snippet. Useful
+ * for trimming whitespace from the end of a source node, etc.
+ *
+ * @param aPattern The pattern to replace.
+ * @param aReplacement The thing to replace the pattern with.
+ */
+SourceNode.prototype.replaceRight = function SourceNode_replaceRight(aPattern, aReplacement) {
+  var lastChild = this.children[this.children.length - 1];
+  if (lastChild[isSourceNode]) {
+    lastChild.replaceRight(aPattern, aReplacement);
+  }
+  else if (typeof lastChild === 'string') {
+    this.children[this.children.length - 1] = lastChild.replace(aPattern, aReplacement);
+  }
+  else {
+    this.children.push(''.replace(aPattern, aReplacement));
+  }
+  return this;
+};
+
+/**
+ * Set the source content for a source file. This will be added to the SourceMapGenerator
+ * in the sourcesContent field.
+ *
+ * @param aSourceFile The filename of the source file
+ * @param aSourceContent The content of the source file
+ */
+SourceNode.prototype.setSourceContent =
+  function SourceNode_setSourceContent(aSourceFile, aSourceContent) {
+    this.sourceContents[util.toSetString(aSourceFile)] = aSourceContent;
+  };
+
+/**
+ * Walk over the tree of SourceNodes. The walking function is called for each
+ * source file content and is passed the filename and source content.
+ *
+ * @param aFn The traversal function.
+ */
+SourceNode.prototype.walkSourceContents =
+  function SourceNode_walkSourceContents(aFn) {
+    for (var i = 0, len = this.children.length; i < len; i++) {
+      if (this.children[i][isSourceNode]) {
+        this.children[i].walkSourceContents(aFn);
+      }
+    }
+
+    var sources = Object.keys(this.sourceContents);
+    for (var i = 0, len = sources.length; i < len; i++) {
+      aFn(util.fromSetString(sources[i]), this.sourceContents[sources[i]]);
+    }
+  };
+
+/**
+ * Return the string representation of this source node. Walks over the tree
+ * and concatenates all the various snippets together to one string.
+ */
+SourceNode.prototype.toString = function SourceNode_toString() {
+  var str = "";
+  this.walk(function (chunk) {
+    str += chunk;
+  });
+  return str;
+};
+
+/**
+ * Returns the string representation of this source node along with a source
+ * map.
+ */
+SourceNode.prototype.toStringWithSourceMap = function SourceNode_toStringWithSourceMap(aArgs) {
+  var generated = {
+    code: "",
+    line: 1,
+    column: 0
+  };
+  var map = new SourceMapGenerator(aArgs);
+  var sourceMappingActive = false;
+  var lastOriginalSource = null;
+  var lastOriginalLine = null;
+  var lastOriginalColumn = null;
+  var lastOriginalName = null;
+  this.walk(function (chunk, original) {
+    generated.code += chunk;
+    if (original.source !== null
+        && original.line !== null
+        && original.column !== null) {
+      if(lastOriginalSource !== original.source
+         || lastOriginalLine !== original.line
+         || lastOriginalColumn !== original.column
+         || lastOriginalName !== original.name) {
+        map.addMapping({
+          source: original.source,
+          original: {
+            line: original.line,
+            column: original.column
+          },
+          generated: {
+            line: generated.line,
+            column: generated.column
+          },
+          name: original.name
+        });
+      }
+      lastOriginalSource = original.source;
+      lastOriginalLine = original.line;
+      lastOriginalColumn = original.column;
+      lastOriginalName = original.name;
+      sourceMappingActive = true;
+    } else if (sourceMappingActive) {
+      map.addMapping({
+        generated: {
+          line: generated.line,
+          column: generated.column
+        }
+      });
+      lastOriginalSource = null;
+      sourceMappingActive = false;
+    }
+    for (var idx = 0, length = chunk.length; idx < length; idx++) {
+      if (chunk.charCodeAt(idx) === NEWLINE_CODE) {
+        generated.line++;
+        generated.column = 0;
+        // Mappings end at eol
+        if (idx + 1 === length) {
+          lastOriginalSource = null;
+          sourceMappingActive = false;
+        } else if (sourceMappingActive) {
+          map.addMapping({
+            source: original.source,
+            original: {
+              line: original.line,
+              column: original.column
+            },
+            generated: {
+              line: generated.line,
+              column: generated.column
+            },
+            name: original.name
+          });
+        }
+      } else {
+        generated.column++;
+      }
+    }
+  });
+  this.walkSourceContents(function (sourceFile, sourceContent) {
+    map.setSourceContent(sourceFile, sourceContent);
+  });
+
+  return { code: generated.code, map: map };
+};
+
+exports.SourceNode = SourceNode;

node_modules/terser/node_modules/source-map/lib/util.js

@@ -0,0 +1,488 @@
+/* -*- Mode: js; js-indent-level: 2; -*- */
+/*
+ * Copyright 2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+
+/**
+ * This is a helper function for getting values from parameter/options
+ * objects.
+ *
+ * @param args The object we are extracting values from
+ * @param name The name of the property we are getting.
+ * @param defaultValue An optional value to return if the property is missing
+ * from the object. If this is not specified and the property is missing, an
+ * error will be thrown.
+ */
+function getArg(aArgs, aName, aDefaultValue) {
+  if (aName in aArgs) {
+    return aArgs[aName];
+  } else if (arguments.length === 3) {
+    return aDefaultValue;
+  } else {
+    throw new Error('"' + aName + '" is a required argument.');
+  }
+}
+exports.getArg = getArg;
+
+var urlRegexp = /^(?:([\w+\-.]+):)?\/\/(?:(\w+:\w+)@)?([\w.-]*)(?::(\d+))?(.*)$/;
+var dataUrlRegexp = /^data:.+\,.+$/;
+
+function urlParse(aUrl) {
+  var match = aUrl.match(urlRegexp);
+  if (!match) {
+    return null;
+  }
+  return {
+    scheme: match[1],
+    auth: match[2],
+    host: match[3],
+    port: match[4],
+    path: match[5]
+  };
+}
+exports.urlParse = urlParse;
+
+function urlGenerate(aParsedUrl) {
+  var url = '';
+  if (aParsedUrl.scheme) {
+    url += aParsedUrl.scheme + ':';
+  }
+  url += '//';
+  if (aParsedUrl.auth) {
+    url += aParsedUrl.auth + '@';
+  }
+  if (aParsedUrl.host) {
+    url += aParsedUrl.host;
+  }
+  if (aParsedUrl.port) {
+    url += ":" + aParsedUrl.port
+  }
+  if (aParsedUrl.path) {
+    url += aParsedUrl.path;
+  }
+  return url;
+}
+exports.urlGenerate = urlGenerate;
+
+/**
+ * Normalizes a path, or the path portion of a URL:
+ *
+ * - Replaces consecutive slashes with one slash.
+ * - Removes unnecessary '.' parts.
+ * - Removes unnecessary '<dir>/..' parts.
+ *
+ * Based on code in the Node.js 'path' core module.
+ *
+ * @param aPath The path or url to normalize.
+ */
+function normalize(aPath) {
+  var path = aPath;
+  var url = urlParse(aPath);
+  if (url) {
+    if (!url.path) {
+      return aPath;
+    }
+    path = url.path;
+  }
+  var isAbsolute = exports.isAbsolute(path);
+
+  var parts = path.split(/\/+/);
+  for (var part, up = 0, i = parts.length - 1; i >= 0; i--) {
+    part = parts[i];
+    if (part === '.') {
+      parts.splice(i, 1);
+    } else if (part === '..') {
+      up++;
+    } else if (up > 0) {
+      if (part === '') {
+        // The first part is blank if the path is absolute. Trying to go
+        // above the root is a no-op. Therefore we can remove all '..' parts
+        // directly after the root.
+        parts.splice(i + 1, up);
+        up = 0;
+      } else {
+        parts.splice(i, 2);
+        up--;
+      }
+    }
+  }
+  path = parts.join('/');
+
+  if (path === '') {
+    path = isAbsolute ? '/' : '.';
+  }
+
+  if (url) {
+    url.path = path;
+    return urlGenerate(url);
+  }
+  return path;
+}
+exports.normalize = normalize;
+
+/**
+ * Joins two paths/URLs.
+ *
+ * @param aRoot The root path or URL.
+ * @param aPath The path or URL to be joined with the root.
+ *
+ * - If aPath is a URL or a data URI, aPath is returned, unless aPath is a
+ *   scheme-relative URL: Then the scheme of aRoot, if any, is prepended
+ *   first.
+ * - Otherwise aPath is a path. If aRoot is a URL, then its path portion
+ *   is updated with the result and aRoot is returned. Otherwise the result
+ *   is returned.
+ *   - If aPath is absolute, the result is aPath.
+ *   - Otherwise the two paths are joined with a slash.
+ * - Joining for example 'http://' and 'www.example.com' is also supported.
+ */
+function join(aRoot, aPath) {
+  if (aRoot === "") {
+    aRoot = ".";
+  }
+  if (aPath === "") {
+    aPath = ".";
+  }
+  var aPathUrl = urlParse(aPath);
+  var aRootUrl = urlParse(aRoot);
+  if (aRootUrl) {
+    aRoot = aRootUrl.path || '/';
+  }
+
+  // `join(foo, '//www.example.org')`
+  if (aPathUrl && !aPathUrl.scheme) {
+    if (aRootUrl) {
+      aPathUrl.scheme = aRootUrl.scheme;
+    }
+    return urlGenerate(aPathUrl);
+  }
+
+  if (aPathUrl || aPath.match(dataUrlRegexp)) {
+    return aPath;
+  }
+
+  // `join('http://', 'www.example.com')`
+  if (aRootUrl && !aRootUrl.host && !aRootUrl.path) {
+    aRootUrl.host = aPath;
+    return urlGenerate(aRootUrl);
+  }
+
+  var joined = aPath.charAt(0) === '/'
+    ? aPath
+    : normalize(aRoot.replace(/\/+$/, '') + '/' + aPath);
+
+  if (aRootUrl) {
+    aRootUrl.path = joined;
+    return urlGenerate(aRootUrl);
+  }
+  return joined;
+}
+exports.join = join;
+
+exports.isAbsolute = function (aPath) {
+  return aPath.charAt(0) === '/' || urlRegexp.test(aPath);
+};
+
+/**
+ * Make a path relative to a URL or another path.
+ *
+ * @param aRoot The root path or URL.
+ * @param aPath The path or URL to be made relative to aRoot.
+ */
+function relative(aRoot, aPath) {
+  if (aRoot === "") {
+    aRoot = ".";
+  }
+
+  aRoot = aRoot.replace(/\/$/, '');
+
+  // It is possible for the path to be above the root. In this case, simply
+  // checking whether the root is a prefix of the path won't work. Instead, we
+  // need to remove components from the root one by one, until either we find
+  // a prefix that fits, or we run out of components to remove.
+  var level = 0;
+  while (aPath.indexOf(aRoot + '/') !== 0) {
+    var index = aRoot.lastIndexOf("/");
+    if (index < 0) {
+      return aPath;
+    }
+
+    // If the only part of the root that is left is the scheme (i.e. http://,
+    // file:///, etc.), one or more slashes (/), or simply nothing at all, we
+    // have exhausted all components, so the path is not relative to the root.
+    aRoot = aRoot.slice(0, index);
+    if (aRoot.match(/^([^\/]+:\/)?\/*$/)) {
+      return aPath;
+    }
+
+    ++level;
+  }
+
+  // Make sure we add a "../" for each component we removed from the root.
+  return Array(level + 1).join("../") + aPath.substr(aRoot.length + 1);
+}
+exports.relative = relative;
+
+var supportsNullProto = (function () {
+  var obj = Object.create(null);
+  return !('__proto__' in obj);
+}());
+
+function identity (s) {
+  return s;
+}
+
+/**
+ * Because behavior goes wacky when you set `__proto__` on objects, we
+ * have to prefix all the strings in our set with an arbitrary character.
+ *
+ * See https://github.com/mozilla/source-map/pull/31 and
+ * https://github.com/mozilla/source-map/issues/30
+ *
+ * @param String aStr
+ */
+function toSetString(aStr) {
+  if (isProtoString(aStr)) {
+    return '$' + aStr;
+  }
+
+  return aStr;
+}
+exports.toSetString = supportsNullProto ? identity : toSetString;
+
+function fromSetString(aStr) {
+  if (isProtoString(aStr)) {
+    return aStr.slice(1);
+  }
+
+  return aStr;
+}
+exports.fromSetString = supportsNullProto ? identity : fromSetString;
+
+function isProtoString(s) {
+  if (!s) {
+    return false;
+  }
+
+  var length = s.length;
+
+  if (length < 9 /* "__proto__".length */) {
+    return false;
+  }
+
+  if (s.charCodeAt(length - 1) !== 95  /* '_' */ ||
+      s.charCodeAt(length - 2) !== 95  /* '_' */ ||
+      s.charCodeAt(length - 3) !== 111 /* 'o' */ ||
+      s.charCodeAt(length - 4) !== 116 /* 't' */ ||
+      s.charCodeAt(length - 5) !== 111 /* 'o' */ ||
+      s.charCodeAt(length - 6) !== 114 /* 'r' */ ||
+      s.charCodeAt(length - 7) !== 112 /* 'p' */ ||
+      s.charCodeAt(length - 8) !== 95  /* '_' */ ||
+      s.charCodeAt(length - 9) !== 95  /* '_' */) {
+    return false;
+  }
+
+  for (var i = length - 10; i >= 0; i--) {
+    if (s.charCodeAt(i) !== 36 /* '$' */) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+/**
+ * Comparator between two mappings where the original positions are compared.
+ *
+ * Optionally pass in `true` as `onlyCompareGenerated` to consider two
+ * mappings with the same original source/line/column, but different generated
+ * line and column the same. Useful when searching for a mapping with a
+ * stubbed out mapping.
+ */
+function compareByOriginalPositions(mappingA, mappingB, onlyCompareOriginal) {
+  var cmp = strcmp(mappingA.source, mappingB.source);
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalLine - mappingB.originalLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalColumn - mappingB.originalColumn;
+  if (cmp !== 0 || onlyCompareOriginal) {
+    return cmp;
+  }
+
+  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.generatedLine - mappingB.generatedLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  return strcmp(mappingA.name, mappingB.name);
+}
+exports.compareByOriginalPositions = compareByOriginalPositions;
+
+/**
+ * Comparator between two mappings with deflated source and name indices where
+ * the generated positions are compared.
+ *
+ * Optionally pass in `true` as `onlyCompareGenerated` to consider two
+ * mappings with the same generated line and column, but different
+ * source/name/original line and column the same. Useful when searching for a
+ * mapping with a stubbed out mapping.
+ */
+function compareByGeneratedPositionsDeflated(mappingA, mappingB, onlyCompareGenerated) {
+  var cmp = mappingA.generatedLine - mappingB.generatedLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
+  if (cmp !== 0 || onlyCompareGenerated) {
+    return cmp;
+  }
+
+  cmp = strcmp(mappingA.source, mappingB.source);
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalLine - mappingB.originalLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalColumn - mappingB.originalColumn;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  return strcmp(mappingA.name, mappingB.name);
+}
+exports.compareByGeneratedPositionsDeflated = compareByGeneratedPositionsDeflated;
+
+function strcmp(aStr1, aStr2) {
+  if (aStr1 === aStr2) {
+    return 0;
+  }
+
+  if (aStr1 === null) {
+    return 1; // aStr2 !== null
+  }
+
+  if (aStr2 === null) {
+    return -1; // aStr1 !== null
+  }
+
+  if (aStr1 > aStr2) {
+    return 1;
+  }
+
+  return -1;
+}
+
+/**
+ * Comparator between two mappings with inflated source and name strings where
+ * the generated positions are compared.
+ */
+function compareByGeneratedPositionsInflated(mappingA, mappingB) {
+  var cmp = mappingA.generatedLine - mappingB.generatedLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.generatedColumn - mappingB.generatedColumn;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = strcmp(mappingA.source, mappingB.source);
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalLine - mappingB.originalLine;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  cmp = mappingA.originalColumn - mappingB.originalColumn;
+  if (cmp !== 0) {
+    return cmp;
+  }
+
+  return strcmp(mappingA.name, mappingB.name);
+}
+exports.compareByGeneratedPositionsInflated = compareByGeneratedPositionsInflated;
+
+/**
+ * Strip any JSON XSSI avoidance prefix from the string (as documented
+ * in the source maps specification), and then parse the string as
+ * JSON.
+ */
+function parseSourceMapInput(str) {
+  return JSON.parse(str.replace(/^\)]}'[^\n]*\n/, ''));
+}
+exports.parseSourceMapInput = parseSourceMapInput;
+
+/**
+ * Compute the URL of a source given the the source root, the source's
+ * URL, and the source map's URL.
+ */
+function computeSourceURL(sourceRoot, sourceURL, sourceMapURL) {
+  sourceURL = sourceURL || '';
+
+  if (sourceRoot) {
+    // This follows what Chrome does.
+    if (sourceRoot[sourceRoot.length - 1] !== '/' && sourceURL[0] !== '/') {
+      sourceRoot += '/';
+    }
+    // The spec says:
+    //   Line 4: An optional source root, useful for relocating source
+    //   files on a server or removing repeated values in the
+    //   “sources” entry.  This value is prepended to the individual
+    //   entries in the “source” field.
+    sourceURL = sourceRoot + sourceURL;
+  }
+
+  // Historically, SourceMapConsumer did not take the sourceMapURL as
+  // a parameter.  This mode is still somewhat supported, which is why
+  // this code block is conditional.  However, it's preferable to pass
+  // the source map URL to SourceMapConsumer, so that this function
+  // can implement the source URL resolution algorithm as outlined in
+  // the spec.  This block is basically the equivalent of:
+  //    new URL(sourceURL, sourceMapURL).toString()
+  // ... except it avoids using URL, which wasn't available in the
+  // older releases of node still supported by this library.
+  //
+  // The spec says:
+  //   If the sources are not absolute URLs after prepending of the
+  //   “sourceRoot”, the sources are resolved relative to the
+  //   SourceMap (like resolving script src in a html document).
+  if (sourceMapURL) {
+    var parsed = urlParse(sourceMapURL);
+    if (!parsed) {
+      throw new Error("sourceMapURL could not be parsed");
+    }
+    if (parsed.path) {
+      // Strip the last path component, but keep the "/".
+      var index = parsed.path.lastIndexOf('/');
+      if (index >= 0) {
+        parsed.path = parsed.path.substring(0, index + 1);
+      }
+    }
+    sourceURL = join(urlGenerate(parsed), sourceURL);
+  }
+
+  return normalize(sourceURL);
+}
+exports.computeSourceURL = computeSourceURL;

node_modules/terser/node_modules/source-map/package.json

@@ -0,0 +1,73 @@
+{
+  "name": "source-map",
+  "description": "Generates and consumes source maps",
+  "version": "0.6.1",
+  "homepage": "https://github.com/mozilla/source-map",
+  "author": "Nick Fitzgerald <nfitzgerald@mozilla.com>",
+  "contributors": [
+    "Tobias Koppers <tobias.koppers@googlemail.com>",
+    "Duncan Beevers <duncan@dweebd.com>",
+    "Stephen Crane <scrane@mozilla.com>",
+    "Ryan Seddon <seddon.ryan@gmail.com>",
+    "Miles Elam <miles.elam@deem.com>",
+    "Mihai Bazon <mihai.bazon@gmail.com>",
+    "Michael Ficarra <github.public.email@michael.ficarra.me>",
+    "Todd Wolfson <todd@twolfson.com>",
+    "Alexander Solovyov <alexander@solovyov.net>",
+    "Felix Gnass <fgnass@gmail.com>",
+    "Conrad Irwin <conrad.irwin@gmail.com>",
+    "usrbincc <usrbincc@yahoo.com>",
+    "David Glasser <glasser@davidglasser.net>",
+    "Chase Douglas <chase@newrelic.com>",
+    "Evan Wallace <evan.exe@gmail.com>",
+    "Heather Arthur <fayearthur@gmail.com>",
+    "Hugh Kennedy <hughskennedy@gmail.com>",
+    "David Glasser <glasser@davidglasser.net>",
+    "Simon Lydell <simon.lydell@gmail.com>",
+    "Jmeas Smith <jellyes2@gmail.com>",
+    "Michael Z Goddard <mzgoddard@gmail.com>",
+    "azu <azu@users.noreply.github.com>",
+    "John Gozde <john@gozde.ca>",
+    "Adam Kirkton <akirkton@truefitinnovation.com>",
+    "Chris Montgomery <christopher.montgomery@dowjones.com>",
+    "J. Ryan Stinnett <jryans@gmail.com>",
+    "Jack Herrington <jherrington@walmartlabs.com>",
+    "Chris Truter <jeffpalentine@gmail.com>",
+    "Daniel Espeset <daniel@danielespeset.com>",
+    "Jamie Wong <jamie.lf.wong@gmail.com>",
+    "Eddy Bruël <ejpbruel@mozilla.com>",
+    "Hawken Rives <hawkrives@gmail.com>",
+    "Gilad Peleg <giladp007@gmail.com>",
+    "djchie <djchie.dev@gmail.com>",
+    "Gary Ye <garysye@gmail.com>",
+    "Nicolas Lalevée <nicolas.lalevee@hibnet.org>"
+  ],
+  "repository": {
+    "type": "git",
+    "url": "http://github.com/mozilla/source-map.git"
+  },
+  "main": "./source-map.js",
+  "files": [
+    "source-map.js",
+    "source-map.d.ts",
+    "lib/",
+    "dist/source-map.debug.js",
+    "dist/source-map.js",
+    "dist/source-map.min.js",
+    "dist/source-map.min.js.map"
+  ],
+  "engines": {
+    "node": ">=0.10.0"
+  },
+  "license": "BSD-3-Clause",
+  "scripts": {
+    "test": "npm run build && node test/run-tests.js",
+    "build": "webpack --color",
+    "toc": "doctoc --title '## Table of Contents' README.md && doctoc --title '## Table of Contents' CONTRIBUTING.md"
+  },
+  "devDependencies": {
+    "doctoc": "^0.15.0",
+    "webpack": "^1.12.0"
+  },
+  "typings": "source-map"
+}

node_modules/terser/node_modules/source-map/source-map.d.ts

@@ -0,0 +1,98 @@
+export interface StartOfSourceMap {
+    file?: string;
+    sourceRoot?: string;
+}
+
+export interface RawSourceMap extends StartOfSourceMap {
+    version: string;
+    sources: string[];
+    names: string[];
+    sourcesContent?: string[];
+    mappings: string;
+}
+
+export interface Position {
+    line: number;
+    column: number;
+}
+
+export interface LineRange extends Position {
+    lastColumn: number;
+}
+
+export interface FindPosition extends Position {
+    // SourceMapConsumer.GREATEST_LOWER_BOUND or SourceMapConsumer.LEAST_UPPER_BOUND
+    bias?: number;
+}
+
+export interface SourceFindPosition extends FindPosition {
+    source: string;
+}
+
+export interface MappedPosition extends Position {
+    source: string;
+    name?: string;
+}
+
+export interface MappingItem {
+    source: string;
+    generatedLine: number;
+    generatedColumn: number;
+    originalLine: number;
+    originalColumn: number;
+    name: string;
+}
+
+export class SourceMapConsumer {
+    static GENERATED_ORDER: number;
+    static ORIGINAL_ORDER: number;
+
+    static GREATEST_LOWER_BOUND: number;
+    static LEAST_UPPER_BOUND: number;
+
+    constructor(rawSourceMap: RawSourceMap);
+    computeColumnSpans(): void;
+    originalPositionFor(generatedPosition: FindPosition): MappedPosition;
+    generatedPositionFor(originalPosition: SourceFindPosition): LineRange;
+    allGeneratedPositionsFor(originalPosition: MappedPosition): Position[];
+    hasContentsOfAllSources(): boolean;
+    sourceContentFor(source: string, returnNullOnMissing?: boolean): string;
+    eachMapping(callback: (mapping: MappingItem) => void, context?: any, order?: number): void;
+}
+
+export interface Mapping {
+    generated: Position;
+    original: Position;
+    source: string;
+    name?: string;
+}
+
+export class SourceMapGenerator {
+    constructor(startOfSourceMap?: StartOfSourceMap);
+    static fromSourceMap(sourceMapConsumer: SourceMapConsumer): SourceMapGenerator;
+    addMapping(mapping: Mapping): void;
+    setSourceContent(sourceFile: string, sourceContent: string): void;
+    applySourceMap(sourceMapConsumer: SourceMapConsumer, sourceFile?: string, sourceMapPath?: string): void;
+    toString(): string;
+}
+
+export interface CodeWithSourceMap {
+    code: string;
+    map: SourceMapGenerator;
+}
+
+export class SourceNode {
+    constructor();
+    constructor(line: number, column: number, source: string);
+    constructor(line: number, column: number, source: string, chunk?: string, name?: string);
+    static fromStringWithSourceMap(code: string, sourceMapConsumer: SourceMapConsumer, relativePath?: string): SourceNode;
+    add(chunk: string): void;
+    prepend(chunk: string): void;
+    setSourceContent(sourceFile: string, sourceContent: string): void;
+    walk(fn: (chunk: string, mapping: MappedPosition) => void): void;
+    walkSourceContents(fn: (file: string, content: string) => void): void;
+    join(sep: string): SourceNode;
+    replaceRight(pattern: string, replacement: string): SourceNode;
+    toString(): string;
+    toStringWithSourceMap(startOfSourceMap?: StartOfSourceMap): CodeWithSourceMap;
+}

node_modules/terser/node_modules/source-map/source-map.js

@@ -0,0 +1,8 @@
+/*
+ * Copyright 2009-2011 Mozilla Foundation and contributors
+ * Licensed under the New BSD license. See LICENSE.txt or:
+ * http://opensource.org/licenses/BSD-3-Clause
+ */
+exports.SourceMapGenerator = require('./lib/source-map-generator').SourceMapGenerator;
+exports.SourceMapConsumer = require('./lib/source-map-consumer').SourceMapConsumer;
+exports.SourceNode = require('./lib/source-node').SourceNode;

node_modules/terser/package.json

@@ -0,0 +1,154 @@
+{
+  "name": "terser",
+  "description": "JavaScript parser, mangler/compressor and beautifier toolkit for ES6+",
+  "homepage": "https://terser.org",
+  "author": "Mihai Bazon <mihai.bazon@gmail.com> (http://lisperator.net/)",
+  "license": "BSD-2-Clause",
+  "version": "5.44.0",
+  "engines": {
+    "node": ">=10"
+  },
+  "maintainers": [
+    "Fábio Santos <fabiosantosart@gmail.com>"
+  ],
+  "repository": "https://github.com/terser/terser",
+  "main": "dist/bundle.min.js",
+  "type": "module",
+  "module": "./main.js",
+  "exports": {
+    ".": [
+      {
+        "types": "./tools/terser.d.ts",
+        "import": "./main.js",
+        "require": "./dist/bundle.min.js"
+      },
+      "./dist/bundle.min.js"
+    ],
+    "./package": "./package.json",
+    "./package.json": "./package.json",
+    "./bin/terser": "./bin/terser"
+  },
+  "types": "tools/terser.d.ts",
+  "bin": {
+    "terser": "bin/terser"
+  },
+  "files": [
+    "bin",
+    "dist",
+    "lib",
+    "tools",
+    "LICENSE",
+    "README.md",
+    "CHANGELOG.md",
+    "PATRONS.md",
+    "main.js"
+  ],
+  "dependencies": {
+    "@jridgewell/source-map": "^0.3.3",
+    "acorn": "^8.15.0",
+    "commander": "^2.20.0",
+    "source-map-support": "~0.5.20"
+  },
+  "devDependencies": {
+    "@ls-lint/ls-lint": "^1.11.2",
+    "astring": "^1.8.5",
+    "eslint": "^7.32.0",
+    "eslump": "^3.0.0",
+    "esm": "^3.2.25",
+    "mocha": "^9.2.0",
+    "pre-commit": "^1.2.2",
+    "rollup": "^2.79.2",
+    "semver": "^7.5.1",
+    "source-map": "~0.8.0-beta.0"
+  },
+  "scripts": {
+    "test": "node test/compress.js && mocha test/mocha",
+    "test:compress": "node test/compress.js",
+    "test:mocha": "mocha test/mocha",
+    "lint": "eslint lib",
+    "lint-fix": "eslint --fix lib",
+    "ls-lint": "ls-lint",
+    "build": "rollup --config --silent",
+    "prepare": "npm run build",
+    "postversion": "echo 'Remember to update the changelog!'"
+  },
+  "keywords": [
+    "uglify",
+    "terser",
+    "uglify-es",
+    "uglify-js",
+    "minify",
+    "minifier",
+    "javascript",
+    "ecmascript",
+    "es5",
+    "es6",
+    "es7",
+    "es8",
+    "es2015",
+    "es2016",
+    "es2017",
+    "async",
+    "await"
+  ],
+  "eslintConfig": {
+    "parserOptions": {
+      "sourceType": "module",
+      "ecmaVersion": 2020
+    },
+    "env": {
+      "node": true,
+      "browser": true,
+      "es2020": true
+    },
+    "globals": {
+      "describe": false,
+      "it": false,
+      "require": false,
+      "before": false,
+      "after": false,
+      "global": false,
+      "process": false
+    },
+    "rules": {
+      "brace-style": [
+        "error",
+        "1tbs",
+        {
+          "allowSingleLine": true
+        }
+      ],
+      "quotes": [
+        "error",
+        "double",
+        "avoid-escape"
+      ],
+      "no-debugger": "error",
+      "no-undef": "error",
+      "no-unused-vars": [
+        "error",
+        {
+          "varsIgnorePattern": "^_",
+          "argsIgnorePattern": "^_"
+        }
+      ],
+      "no-tabs": "error",
+      "semi": [
+        "error",
+        "always"
+      ],
+      "no-extra-semi": "error",
+      "no-irregular-whitespace": "error",
+      "space-before-blocks": [
+        "error",
+        "always"
+      ]
+    }
+  },
+  "pre-commit": [
+    "build",
+    "lint-fix",
+    "ls-lint",
+    "test"
+  ]
+}

node_modules/terser/tools/exit.cjs

@@ -0,0 +1,7 @@
+// workaround for tty output truncation upon process.exit()
+// https://github.com/nodejs/node/issues/6456
+
+[process.stdout, process.stderr].forEach((s) => {
+  s && s.isTTY && s._handle && s._handle.setBlocking &&
+    s._handle.setBlocking(true)
+});

node_modules/terser/tools/props.html

@@ -0,0 +1,68 @@
+<html>
+  <head>
+  </head>
+  <body>
+    <script>(function(){
+      var props = {};
+
+      function addObject(obj) {
+        if (obj == null) return;
+        try {
+          Object.getOwnPropertyNames(obj).forEach(add);
+        } catch(ex) {}
+        if (obj.prototype) {
+          Object.getOwnPropertyNames(obj.prototype).forEach(add);
+        }
+        if (typeof obj == "function") {
+          try {
+            Object.getOwnPropertyNames(new obj).forEach(add);
+          } catch(ex) {}
+        }
+      }
+
+      function add(name) {
+        if (/^[a-z_$][a-z0-9_$]*$/i.test(name)) {
+            props[name] = true;
+        }
+      }
+
+      Object.getOwnPropertyNames(window).forEach(function(thing){
+        addObject(window[thing]);
+      });
+
+      try {
+        addObject(new Event("click"));
+        addObject(new Event("contextmenu"));
+        addObject(new Event("mouseup"));
+        addObject(new Event("mousedown"));
+        addObject(new Event("keydown"));
+        addObject(new Event("keypress"));
+        addObject(new Event("keyup"));
+        addObject(new Event("input"));
+        addObject(new Event("touchstart"));
+        addObject(new Event("touchmove"));
+        addObject(new Event("touchend"));
+        addObject(new Event("touchcancel"));
+        addObject(new Event("pointerdown"));
+        addObject(new Event("pointermove"));
+        addObject(new Event("pointerup"));
+        addObject(new Event("pointercancel"));
+        addObject(new Event("pointerenter"));
+        addObject(new Event("pointerleave"));
+      } catch(ex) {}
+
+      var ta = document.createElement("textarea");
+      ta.style.width = "100%";
+      ta.style.height = "20em";
+      ta.style.boxSizing = "border-box";
+      ta.value = 'export var domprops = ' + JSON.stringify(Object.keys(props).sort(cmp), null, 4);
+      document.body.appendChild(ta);
+
+      function cmp(a, b) {
+        a = a.toLowerCase();
+        b = b.toLowerCase();
+        return a < b ? -1 : a > b ? 1 : 0;
+      }
+    })();</script>
+  </body>
+</html>

node_modules/terser/tools/terser.d.ts

@@ -0,0 +1,217 @@
+/// <reference lib="es2015" />
+
+import { SectionedSourceMapInput, EncodedSourceMap, DecodedSourceMap } from '@jridgewell/source-map';
+
+export type ECMA = 5 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020;
+
+export type ConsoleProperty = keyof typeof console;
+type DropConsoleOption = boolean | ConsoleProperty[];
+
+export interface ParseOptions {
+    bare_returns?: boolean;
+    /** @deprecated legacy option. Currently, all supported EcmaScript is valid to parse. */
+    ecma?: ECMA;
+    html5_comments?: boolean;
+    shebang?: boolean;
+}
+
+export interface CompressOptions {
+    arguments?: boolean;
+    arrows?: boolean;
+    booleans_as_integers?: boolean;
+    booleans?: boolean;
+    collapse_vars?: boolean;
+    comparisons?: boolean;
+    computed_props?: boolean;
+    conditionals?: boolean;
+    dead_code?: boolean;
+    defaults?: boolean;
+    directives?: boolean;
+    drop_console?: DropConsoleOption;
+    drop_debugger?: boolean;
+    ecma?: ECMA;
+    evaluate?: boolean;
+    expression?: boolean;
+    global_defs?: object;
+    hoist_funs?: boolean;
+    hoist_props?: boolean;
+    hoist_vars?: boolean;
+    ie8?: boolean;
+    if_return?: boolean;
+    inline?: boolean | InlineFunctions;
+    join_vars?: boolean;
+    keep_classnames?: boolean | RegExp;
+    keep_fargs?: boolean;
+    keep_fnames?: boolean | RegExp;
+    keep_infinity?: boolean;
+    lhs_constants?: boolean;
+    loops?: boolean;
+    module?: boolean;
+    negate_iife?: boolean;
+    passes?: number;
+    properties?: boolean;
+    pure_funcs?: string[];
+    pure_new?: boolean;
+    pure_getters?: boolean | 'strict';
+    reduce_funcs?: boolean;
+    reduce_vars?: boolean;
+    sequences?: boolean | number;
+    side_effects?: boolean;
+    switches?: boolean;
+    toplevel?: boolean;
+    top_retain?: null | string | string[] | RegExp;
+    typeofs?: boolean;
+    unsafe_arrows?: boolean;
+    unsafe?: boolean;
+    unsafe_comps?: boolean;
+    unsafe_Function?: boolean;
+    unsafe_math?: boolean;
+    unsafe_symbols?: boolean;
+    unsafe_methods?: boolean;
+    unsafe_proto?: boolean;
+    unsafe_regexp?: boolean;
+    unsafe_undefined?: boolean;
+    unused?: boolean;
+}
+
+export enum InlineFunctions {
+    Disabled = 0,
+    SimpleFunctions = 1,
+    WithArguments = 2,
+    WithArgumentsAndVariables = 3
+}
+
+export interface MangleOptions {
+    eval?: boolean;
+    keep_classnames?: boolean | RegExp;
+    keep_fnames?: boolean | RegExp;
+    module?: boolean;
+    nth_identifier?: SimpleIdentifierMangler | WeightedIdentifierMangler;
+    properties?: boolean | ManglePropertiesOptions;
+    reserved?: string[];
+    safari10?: boolean;
+    toplevel?: boolean;
+}
+
+/**
+ * An identifier mangler for which the output is invariant with respect to the source code.
+ */
+export interface SimpleIdentifierMangler {
+    /**
+     * Obtains the nth most favored (usually shortest) identifier to rename a variable to.
+     * The mangler will increment n and retry until the return value is not in use in scope, and is not a reserved word.
+     * This function is expected to be stable; Evaluating get(n) === get(n) should always return true.
+     * @param n The ordinal of the identifier.
+     */
+    get(n: number): string;
+}
+
+/**
+ * An identifier mangler that leverages character frequency analysis to determine identifier precedence.
+ */
+export interface WeightedIdentifierMangler extends SimpleIdentifierMangler {
+    /**
+     * Modifies the internal weighting of the input characters by the specified delta.
+     * Will be invoked on the entire printed AST, and then deduct mangleable identifiers.
+     * @param chars The characters to modify the weighting of.
+     * @param delta The numeric weight to add to the characters.
+     */
+    consider(chars: string, delta: number): number;
+    /**
+     * Resets character weights.
+     */
+    reset(): void;
+    /**
+     * Sorts identifiers by character frequency, in preparation for calls to get(n).
+     */
+    sort(): void;
+}
+
+export interface ManglePropertiesOptions {
+    builtins?: boolean;
+    debug?: boolean;
+    keep_quoted?: boolean | 'strict';
+    nth_identifier?: SimpleIdentifierMangler | WeightedIdentifierMangler;
+    regex?: RegExp | string;
+    reserved?: string[];
+}
+
+export interface FormatOptions {
+    ascii_only?: boolean;
+    /** @deprecated Not implemented anymore */
+    beautify?: boolean;
+    braces?: boolean;
+    comments?: boolean | 'all' | 'some' | RegExp | ( (node: any, comment: {
+        value: string,
+        type: 'comment1' | 'comment2' | 'comment3' | 'comment4',
+        pos: number,
+        line: number,
+        col: number,
+    }) => boolean );
+    ecma?: ECMA;
+    ie8?: boolean;
+    keep_numbers?: boolean;
+    indent_level?: number;
+    indent_start?: number;
+    inline_script?: boolean;
+    keep_quoted_props?: boolean;
+    max_line_len?: number | false;
+    preamble?: string;
+    preserve_annotations?: boolean;
+    quote_keys?: boolean;
+    quote_style?: OutputQuoteStyle;
+    safari10?: boolean;
+    semicolons?: boolean;
+    shebang?: boolean;
+    shorthand?: boolean;
+    source_map?: SourceMapOptions;
+    webkit?: boolean;
+    width?: number;
+    wrap_iife?: boolean;
+    wrap_func_args?: boolean;
+}
+
+export enum OutputQuoteStyle {
+    PreferDouble = 0,
+    AlwaysSingle = 1,
+    AlwaysDouble = 2,
+    AlwaysOriginal = 3
+}
+
+export interface MinifyOptions {
+    compress?: boolean | CompressOptions;
+    ecma?: ECMA;
+    enclose?: boolean | string;
+    ie8?: boolean;
+    keep_classnames?: boolean | RegExp;
+    keep_fnames?: boolean | RegExp;
+    mangle?: boolean | MangleOptions;
+    module?: boolean;
+    nameCache?: object;
+    format?: FormatOptions;
+    /** @deprecated */
+    output?: FormatOptions;
+    parse?: ParseOptions;
+    safari10?: boolean;
+    sourceMap?: boolean | SourceMapOptions;
+    toplevel?: boolean;
+}
+
+export interface MinifyOutput {
+    code?: string;
+    map?: EncodedSourceMap | string;
+    decoded_map?: DecodedSourceMap | null;
+}
+
+export interface SourceMapOptions {
+    /** Source map object, 'inline' or source map file content */
+    content?: SectionedSourceMapInput | string;
+    includeSources?: boolean;
+    filename?: string;
+    root?: string;
+    asObject?: boolean;
+    url?: string | 'inline';
+}
+
+export function minify(files: string | string[] | { [file: string]: string }, options?: MinifyOptions): Promise<MinifyOutput>;
+export function minify_sync(files: string | string[] | { [file: string]: string }, options?: MinifyOptions): MinifyOutput;