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WebAssembly.compile()

The WebAssembly.compile() function compiles WebAssembly binary code into a WebAssembly.Module object. This function is useful if it is necessary to a compile a module before it can be instantiated (otherwise, the WebAssembly.instantiate() function should be used).

Syntax

WebAssembly.compile(bufferSource)

Parameters

bufferSource

A typed array or ArrayBuffer containing the binary code of the .wasm module you want to compile.

Return value

A Promise that resolves to a WebAssembly.Module object representing the compiled module.

Exceptions

Examples

Using compile

The following example compiles the loaded simple.wasm byte code using the compile() function and then sends it to a worker using postMessage().

const worker = new Worker("wasm_worker.js");

fetch('simple.wasm')
  .then((response) => response.arrayBuffer())
  .then((bytes) => WebAssembly.compile(bytes))
  .then((mod) => worker.postMessage(mod));

Note: You'll probably want to use WebAssembly.compileStreaming() in most cases, as it is more efficient than compile().

Specifications

Browser compatibility

Desktop Mobile Server
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet Deno Node.js
compile
57
16
52
No
44
11
57
57
52
43
11
7.0
1.0
8.0.0

See also

© 2005–2022 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/compile