export declare enum TokenType {
    TEXT = "TEXT",
    EXPRESSION_START = "EXPRESSION_START",// <%=
    EXPRESSION_UNESCAPED = "EXPRESSION_UNESCAPED",// <%!=
    CODE_START = "CODE_START",// <%
    TAG_END = "TAG_END",// %>
    IF = "IF",
    ELSE = "ELSE",
    ELSEIF = "ELSEIF",
    ENDIF = "ENDIF",
    FOR = "FOR",
    ENDFOR = "ENDFOR",
    COMMENT = "COMMENT",// <%-- comment --%>
    DEFINE_START = "DEFINE_START",// <Define:
    DEFINE_END = "DEFINE_END",// </Define:
    COMPONENT_NAME = "COMPONENT_NAME",
    SLOT_START = "SLOT_START",// <#
    SLOT_END = "SLOT_END",// </#
    SLOT_NAME = "SLOT_NAME",
    TAG_OPEN = "TAG_OPEN",// <tagname or <ComponentName
    TAG_CLOSE = "TAG_CLOSE",// </tagname or </ComponentName
    TAG_NAME = "TAG_NAME",// The tag/component name
    SELF_CLOSING = "SELF_CLOSING",// />
    ATTR_NAME = "ATTR_NAME",// $property or regular
    ATTR_VALUE = "ATTR_VALUE",
    COLON = "COLON",
    SEMICOLON = "SEMICOLON",
    GT = "GT",// >
    LT = "LT",// <
    SLASH = "SLASH",// /
    EQUALS = "EQUALS",// =
    QUOTE = "QUOTE",// " or '
    EOF = "EOF",
    NEWLINE = "NEWLINE",
    WHITESPACE = "WHITESPACE",
    JAVASCRIPT = "JAVASCRIPT"
}
export interface SourceLocation {
    start: {
        line: number;
        column: number;
        offset: number;
    };
    end: {
        line: number;
        column: number;
        offset: number;
    };
}
export interface Token {
    type: TokenType;
    value: string;
    line: number;
    column: number;
    start: number;
    end: number;
    loc?: SourceLocation;
}
export declare class Lexer {
    private input;
    private position;
    private line;
    private column;
    private tokens;
    private savedPosition;
    constructor(input: string);
    /**
     * Save current position for later token creation
     */
    private savePosition;
    /**
     * Get saved position or current position
     */
    private getSavedPosition;
    /**
     * Replace <%-- comment --%> with equivalent number of newlines
     * This ensures line mapping stays accurate while removing comment content
     */
    private preprocessComments;
    /**
     * Replace HTML comments (<!-- -->) that appear OUTSIDE of <Define> tags
     * This strips documentation comments before component definitions
     * HTML comments INSIDE <Define> tags are preserved in the output
     */
    private preprocessHTMLComments;
    /**
     * Preprocess code blocks and expressions
     * - Insert comment markers for empty lines in code blocks
     * - Collapse multi-line expressions to single line with trailing newlines
     * This ensures 1:1 line mapping in generated code
     */
    private preprocessCodeBlocks;
    /**
     * Find the closing %> tag, properly handling strings and comments
     */
    private findClosingTag;
    tokenize(): Token[];
    private scan_next;
    private scan_text;
    private scan_code_block;
    private scan_comment;
    private scan_html_comment;
    private scan_expression;
    private scan_javascript;
    private scan_component_name;
    private scan_slot_name;
    private match_sequence;
    private match_keyword;
    private peek_sequence;
    private peek_sequence_at;
    private skip_whitespace;
    private current_char;
    private peek_ahead;
    private advance;
    private add_token;
    private is_tag_name_char;
    private is_tag_name_continue_char;
    private scan_opening_tag;
    private scan_closing_tag;
    private scan_attributes;
    private is_attribute_start_char;
    private peek_for_colon;
    private scan_attribute;
    private scan_attribute_value;
    private validate_unquoted_value;
    private get_current_attribute_context;
    private value_contains_interpolation;
    private scan_interpolated_attribute_value;
}
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