Bundler

Install

npm i @putout/bundle

API

import {bundle} from '@putout/bundler';

console.log(bundle(CWD, entry, filesystem));

Internals

Convert ESM to CommonJS

To Simplify things up all files converted to CommonJS first. Let's suppose none of them use top-level await to get things simpler.

Parse filenames

Traverse all files starting from entry and get all filenames.

• parse-require;
• parse-filenames;
• resolve-filenames;
• resolve-require;
• bundle-files;

Bundle all files to object

Traverse filesystem and create object that contains filename and file content:

const __filesystem = {
    '/entry.js': () => {
        const client = require('/client.js');
        console.log(client);
    },
    '/client.js': (exports, require, module) => {
        module.exports = 'hello';
    },
};

IIFE

Most likely we need IIFE so couple bundles can be loaded on page simultaneously.

Result Example

const __modules = {};
const __filesystem = {
    '/entry.js': () => {
        const client = require('/client.js');
        console.log(client);
    },
    '/client.js': (exports, require, module) => {
        module.exports = 'hello';
    },
};

const require = (name) => {
    const exports = {};
    const module = {
        exports,
    };
    
    if (__modules[name])
        return __modules[name];
    
    __filesystem[name](exports, require, module);
    __modules[name] = module.exports;
    
    return module.exports;
};

require('/entry.js');

License

MIT