Introduction

Binary files are often large, and representing them as text can be inefficient. When an application imports a large binary file, it often makes more sense to load that data from a URL rather than inlining it into the JavaScript bundle.

The Test

This test bundles a JavaScript module that imports a large binary file, expecting the result of the import to be a URL. That URL should be usable for loading the binary data using fetch(url) or some other method.

index.js

import binURL from './binary.bin';
fetch(binURL).then(async r => {
  console.log(await r.arraybuffer());
});

Bundlers may use something other than a static import to achieve this. The test passes as long as the resulting URL can be stored in a variable.

binary.bin

<binary data>

The built result should be a copy of binary.bin with a hashed URL, and a JavaScript bundle that passes the hashed URL of binary.bin to fetch().