What is the official ES Modules specification?

The official specification is part of ECMAScript (ES6/ES2015 and later) maintained by TC39. View it at tc39.es/ecma262/#sec-modules. The spec defines import/export syntax, module semantics, and resolution behavior. It's implemented by browsers and JavaScript runtimes like Node.js, Deno, and Bun.

Where can I find the best ES Modules documentation?

Top documentation sources: 1) MDN Web Docs (developer.mozilla.org) - comprehensive guides and examples, 2) Node.js documentation for ESM in Node.js, 3) JavaScript.info - clear tutorials, 4) TC39 proposals for upcoming features, 5) ESModules.com for practical guides and patterns. MDN is the most authoritative and beginner-friendly resource.

What tools help me learn ES Modules?

Learning tools: 1) Browser DevTools for debugging module loading, 2) Vite for instant feedback and experimentation, 3) CodePen or CodeSandbox for online practice, 4) VS Code with ESLint for immediate feedback, 5) Module bundler visualizers (webpack-bundle-analyzer, rollup-plugin-visualizer) to understand dependencies. Start with Vite + VS Code for the best learning experience.

Are there any ES Modules courses or tutorials?

Free resources: 1) JavaScript.info modules section, 2) MDN JavaScript Modules guide, 3) ESModules.com comprehensive guides, 4) FreeCodeCamp articles, 5) Web.dev articles by Google. Paid courses: Frontend Masters, Udemy, and Pluralsight have JavaScript courses covering ES Modules. Start with free resources then supplement with courses if needed.