#!/usr/bin/env node

/**
 * JavaScript Syntax Linter for Code Quality Checks
 * 
 * This script checks JavaScript files for syntax errors using acorn parser.
 * 
 * Usage: node js-linter.js <input-file>
 * Exit codes:
 *   0 - No syntax errors
 *   1 - Syntax error found
 */

const fs = require('fs');
const acorn = require('acorn');

// Get input file from command line arguments
const inputFile = process.argv[2];

if (!inputFile) {
    console.error('Usage: node js-linter.js <input-file>');
    process.exit(1);
}

try {
    const code = fs.readFileSync(inputFile, 'utf8');
    
    // Parse the code to check for syntax errors
    acorn.parse(code, {
        ecmaVersion: 'latest',
        sourceType: 'module',
        allowReturnOutsideFunction: true,
        allowImportExportEverywhere: true,
        allowAwaitOutsideFunction: true,
        allowSuperOutsideMethod: true,
        allowHashBang: true
    });
    
    // Silent success - no output when no errors
    process.exit(0);
    
} catch (error) {
    // Output error information
    console.error('Syntax error: ' + error.message);
    if (error.loc) {
        console.error('Line: ' + error.loc.line);
        console.error('Column: ' + error.loc.column);
    }
    process.exit(1);
}