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## WebAssembly support
Deno can execute [WebAssembly](https://webassembly.org/) modules with the same
interfaces that
[browsers provide](https://developer.mozilla.org/en-US/docs/WebAssembly).
<!-- deno-fmt-ignore -->
```ts
const wasmCode = new Uint8Array([
0, 97, 115, 109, 1, 0, 0, 0, 1, 133, 128, 128, 128, 0, 1, 96, 0, 1, 127,
3, 130, 128, 128, 128, 0, 1, 0, 4, 132, 128, 128, 128, 0, 1, 112, 0, 0,
5, 131, 128, 128, 128, 0, 1, 0, 1, 6, 129, 128, 128, 128, 0, 0, 7, 145,
128, 128, 128, 0, 2, 6, 109, 101, 109, 111, 114, 121, 2, 0, 4, 109, 97,
105, 110, 0, 0, 10, 138, 128, 128, 128, 0, 1, 132, 128, 128, 128, 0, 0,
65, 42, 11
]);
const wasmModule = new WebAssembly.Module(wasmCode);
const wasmInstance = new WebAssembly.Instance(wasmModule);
const main = wasmInstance.exports.main as CallableFunction
console.log(main().toString());
```
For files:
```ts
const wasmCode = await Deno.readFile("main.wasm");
const wasmModule = new WebAssembly.Module(wasmCode);
const wasmInstance = new WebAssembly.Instance(wasmModule);
const main = wasmInstance.exports.main as CallableFunction;
console.log(main().toString());
```
And for loading WebAssembly modules over the network (note that the file must be
served with `application/wasm` MIME type):
```ts
const { instance, module } = await WebAssembly.instantiateStreaming(
fetch("https://wpt.live/wasm/incrementer.wasm"),
);
const increment = instance.exports.increment as (input: number) => number;
console.log(increment(41));
```
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