The Test

This test checks to see if exports from a common module can be separated when they are used exclusively by different entry modules, avoiding a bundle being loaded that contains unused exports. In this particular variation, three entry modules each use one of two exported objects from a common module.

entry-1.js

import { foo } from './objects.js';
console.log(foo);

entry-2.js

import { bar } from './objects.js';
console.log(bar);

entry-3.js

import { bar } from './objects.js';
console.log(bar, '!');

objects.js

export const foo = { name: 'foo' };
export const bar = { name: 'bar' };

In this example, entry-1.js uses foo from objects.js, whereas entry-2.js and entry-3.js use bar.

Ideally this should result in 4 generated bundles: a bundle for entry-1 with foo inlined, and bundles for entry-2 and entry-3 that reference a separate bundle containing only bar.