Wasm Bundler

Wasm Bundler is a simple script that enables one to embed their .wasm file into their javascript code by creating a .js file that has the wasm binary file gzipped and stringified to base64 for load. This file can then, if one desired, be bundled into other code of yours via your desired bundler. The generated code does need the @doctor/encoding-stream/base64 dependency to function properly.

Example 1

Example Command

Assuming there was a static/wasm/app.js and static/wasm/app_bg.wasm file already in your code base.

deno run --allow-read --allow-write @doctor/wasm-bundler static/wasm/app_bg.wasm ./app.js static/wasm/embed.js

Output

import { DecodeBase64Stream } from '@doctor/encoding-stream/base64'
import x from './app.js'

x(new Response(
	ReadableStream.from((async function* () {
		yield 'Imagine Repeated Base64 Strings Here!'
	})())
		.pipeThrough(new DecodeBase64Stream())
		.pipeThrough(new DecompressionStream('gzip'))
))

Example 2

Example Import

Assuming there was a static/wasm/app.js and static/wasm/app_bg.wasm file already in your code base.

import { WasmToJs } from '@doctor/wasm-bundler/mod'

(await Deno.open('./static/wasm/app_bg.wasm'))
	.readable
	.pipeThrough(new WasmToJs('./app.js'))
	.pipeTo(Deno.stdout.writable)