Non-JavaScript modules

{/* Changes to this section should also be applied to /workers/wrangler/bundling */}

In addition to TypeScript and JavaScript, the following module types are automatically configured to be importable in your Worker code.

For example, with the following import, text will be a string containing the contents of example.txt:

import text from "./example.txt";

This is also the basis for importing Wasm, as in the following example:

import wasm from "./example.wasm";

// Instantiate Wasm modules in the module scope
const instance = await WebAssembly.instantiate(wasm);

export default {
	fetch() {
		const result = instance.exports.exported_func();

		return new Response(result);
	},
};

:::note

Cloudflare Workers does not support WebAssembly.instantiateStreaming(). :::