Exports Hash

ok.js

module.exports = 'ok';

other.js

module.exports = 42;

package.json

{
  "name": "exports-hash",
  "exports": {
    "./#foo": "./ok.js",
    "./module": "./ok.js",
    "./🎉": "./ok.js",
    "./%F0%9F%8E%89": "./other.js",
    "./bar#foo": "./ok.js",
    "./#zapp/": "./"
  }
}

test.mjs

import {createRequire} from 'module';

const requireSync = createRequire(import.meta.url);

async function require(specifier) {
  return {default: requireSync(specifier)};
}

const specifiers = [
  // Does resolve (exact match)
  'exports-hash/#foo',
  'exports-hash/bar#foo',
  'exports-hash/module',
  // Does resolve (prefix matching)
  'exports-hash/#zapp/ok.js#abc',
  'exports-hash/#zapp/ok.js?abc',
  // Does resolve, since it's prefix-matched, it gives the same result.
  'exports-hash/#zapp/🎉.js',
  'exports-hash/#zapp/%F0%9F%8E%89.js',
  // Does resolve but no URL-style normalization, different result!
  'exports-hash/🎉',
  'exports-hash/%F0%9F%8E%89',

  // Does *not* resolve (exact match)
  'exports-hash/module#foo',
  'exports-hash/module?foo',
];

function log(specifier, promise) {
  promise.then(value => {
    console.error('loaded %j', specifier, value);
  }).catch(e => {
    console.error('failed %j', specifier, e);
  });
}

async function main() {
  for (const specifier of specifiers) {
    log(specifier, import(specifier));
    log(specifier, require(specifier));
  }
}
main();

🎉.js

module.exports = 'tada';