You can use browserify’s brfs to convert a binary to base64, then convert to Array Buffer using the base64-arraybuffer decoder.

This example uses a custom Parcel Transformer plugin to convert the binary file to Base64 and inline it into a JavaScript module along with a helper to decode it at runtime. The helper is in a separate file, so it is not duplicated and can be code split.

As an alternative implementation, one could use an Optimizer plugin instead, which would allow the file to be processed through the whole transforming, bundling, and optimizing phases before being inlined back into the original bundle. An example of that is in the documentation.

Rollup plugins are simple to write. In this case, a module was generated that exports the file as a base64 string, wrapped in a function that converts base64 to an array buffer. The function that does the conversion is in a virtual module, so it isn't duplicated, and can be code-split.

arraybuffer-loader is an off-the-shelf loader that encodes imported files as Base64, then exports the decoded contents as an ArrayBuffer. This can also be achieved by chaining together url-loader's base64 option and a quick base64-to-arraybuffer implementation. Since that's basically what arraybuffer-loader does, we'll use the one that was already built.