bundler.js

const fs = require('fs');

const path = require('path');

function bundle(entryFile) {

const entryContent = fs.readFileSync(entryFile, 'utf8');

const modules = {};

function require(modulePath) {

const fullPath = path.resolve(__dirname, modulePath);

if (modules[fullPath]) {

return modules[fullPath].exports;

}

const module = { exports: {} };

modules[fullPath] = module;

// Execute the module code with `require`, `module`, and `exports`

// available as local variables.

const moduleCode = fs.readFileSync(fullPath, 'utf8');

const wrappedCode = `(function (require, module, exports, __dirname, __filename) { ${moduleCode} })(require, module, module.exports, "${path.dirname(fullPath)}", "${fullPath}")`;

eval(wrappedCode);

return module.exports;

}

require(entryFile);

// Create the bundle

const bundledCode = Object.keys(modules)

.map(modulePath => {

const moduleName = JSON.stringify(path.relative(__dirname, modulePath));

const moduleContent = modules[modulePath].exports.toString();

return `// ${moduleName}\n${moduleContent}`;

})

.join('\n\n');

return bundledCode;

}

const entryFile = path.resolve(__dirname,'src/index.js'); // Update this with your entry file

const bundledCode = bundle(entryFile);

fs.writeFileSync('./bundle.js', bundledCode, 'utf8');