manan057 / esm

ECMAScript modules in Node today!

@std/esm

Usage

1. Run npm i --save @std/esm in your package or app directory.
2. Call require("@std/esm") before importing ECMAScript modules.

Enable ESM in the Node REPL by loading @std/esm upon entering:

$ node
> require("@std/esm")
{}
> import { strictEqual } from "assert"
> strictEqual(2 + 2, 5)
AssertionError: 4 === 5
    at repl:1:1
    at REPLServer.defaultEval (repl.js:272:27)
  ...

Features

	@std/esm	ESM in Node 10
Dynamic import()	✅	✅
Live bindings	✅	✅
Loads .mjs as ESM	✅	✅
Loads .js as ESM	✅	❌
Loads gzipped modules (e.g. .js.gz, .mjs.gz)	✅	❌
Node 4+ support	✅	❌
Top-level await for main ES module	✅ *	❌
Unordered specifiers import * as ns, v, {a,b} from "mod"	✅ *	❌
import {a,b} from "cjs"	✅ *	❌
export * as ns from "mod"	✅ *	❌
export v from "mod"	✅ *	❌
Top-level return in ESM	✅ **	❌
__dirname in ESM	✅ **	❌
__filename in ESM	✅ **	❌
require in ESM	✅ **	❌
Loads ESM with require from CJS	✅ **	❌

* ESM expansions
** Carryover from CJS