README.md

Rollup demo

Here is how to run the demo after you download the zip file containing this gist.

Native ESM

$ node main.mjs
[Function: foo] [Function: foo] [Function: bar] [Function: bar]

Via Rollup

$ npx rollup --format=esm --file=bundle.mjs -- main.mjs
main.mjs → bundle.mjs...
created bundle.mjs in 30ms
$ node bundle.mjs
[Function: foo] [Function: foo$1] [Function: bar] [Function: bar$1]

a.js

// a.mjs
const foo = () => {};
export { foo };
export function bar() { }

b.js

// b.mjs
const foo = () => {};
export { foo };
export function bar() { }

bundle.mjs

// a.js
const foo = () => {};
function bar() { }

// b.js
const foo$1 = () => {};
function bar$1() { }

// main.js
console.log(foo, foo$1, bar, bar$1);

main.mjs

// main.mjs
import { foo as afoo, bar as abar } from "./a.mjs"
import { foo as bfoo, bar as bbar } from "./b.mjs"
console.log(afoo, bfoo, abar, bbar);