CommonJS is not going away | Bun Blog
We're hiring C/C++ and Zig engineers to build the future of JavaScript! Join our team → Some may be surprised to see the recent release notes for Bun mention CommonJS support. After all, CommonJS is a legacy module system, and the future of JavaScript is ES Modules (ESM), right? As a "forward-thinking" "next-gen" runtime, why would Bun put so much effort into improving CommonJS support? The latest
ESM-CJS interop test
ESM-CJS interop test Test Cases Results Node.js Babel Webpack Rollup.js Parcel esbuild Results by test case Results by syntax import x and similar import { named } and similar import { __esModule } and similar import * and similar import() and similar require().default and similar require().named and similar require().__esModule and similar require() and similar Direct differences Webpack <-> Node
GitHub - indutny/common-shake: CommonJS Tree Shaker API
const acorn = require('acorn'); const Analyzer = require('common-shake').Analyzer; const a = new Analyzer(); a.run(acorn.parse(` 'use strict'; const lib = require('./a.js'); exports.a = lib.a; `, { locations: true }), 'index.js'); a.run(acorn.parse(` 'use strict'; exports.a = 42; `, { locations: true }), 'a.js'); a.resolve('index.js', './a.js', 'a.js'); console.log(a.isSuccess(), a.bailouts); // t
Babel and CommonJS modules
This blog post examines how Babel ensures that code it transpiles interoperates properly with normal CommonJS modules. Consult chapter “Modules†in “Exploring ES6†for more information on ES6 modules. Starting point for this series of posts on Babel: “Configuring Babel 6†ES6 modules vs. CommonJS modules  # ECMAScript 6 modules  # Default export (single export): // lib.js export default function (
webpack module bundler
Getting started by reading the documentation, which also contains an introduction and a tutorial.
Promises/A+
Promises/A+ An open standard for sound, interoperable JavaScript promises—by implementers, for implementers. A promise represents the eventual result of an asynchronous operation. The primary way of interacting with a promise is through its then method, which registers callbacks to receive either a promise’s eventual value or the reason why the promise cannot be fulfilled. This specification detai
pahen/node-madge · GitHub
Madge is a developer tool for generating a visual graph of your module dependencies, finding circular dependencies, and giving you other useful info. Joel Kemp's awesome dependency-tree is used for extracting the dependency tree. Works for JavaScript (AMD, CommonJS, and ES6 modules) Also works for CSS preprocessors (Sass, Stylus, and Less) NPM installed dependencies are excluded by default (can be
Lazy evaluation of CommonJS modules
Tobie Langel (@tobie) is a Software engineer at Facebook. He’s also Facebook’s W3C AC Rep. An avid open-source contributor, he’s mostly known for having co-maintained the Prototype JavaScript Framework. Tobie recently picked up blogging again and rants at blog.tobie.me. In a previous life, he was a professional jazz drummer. About two years ago, the mobile Gmail team posted an article focused on r
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`allowJs` does not allow to import .cjs in `module:node12` · Issue #46185 · microsoft/TypeScript
Angular Package Format v12
GitHub - nodejs/dynamic-modules: Dynamic Modules Proposal for ECMAScript
GitHub - indutny/webpack-common-shake: CommonJS Tree Shaker plugin for WebPack
Fix CommonJs modules by billti · Pull Request #7249 · microsoft/TypeScript
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`module.exports =` and ES6 Module Interop in Node.js
Flatten module type expressions during module-preprocess by nicks · Pull Request #398 · google/closure-compiler
GitHub - creationix/js-linker: A library that searches for require calls in js code and links them together into a single script.
3889970’s gists
GitHub - tobie/modulr-node: Resolves and concatenates CommonJS module dependencies for use in the browser.
Reddit - Dive into anything
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