Sandbox::https://github.com/FlipFloop/engine/blob/master/examples/wasm-loader.js

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// check for wasm module support

function wasmSupported() {

try {

if (typeof WebAssembly === "object" && typeof WebAssembly.instantiate === "function") {

const module = new WebAssembly.Module(Uint8Array.of(0x0, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00));

if (module instanceof WebAssembly.Module)

return new WebAssembly.Instance(module) instanceof WebAssembly.Instance;

}

} catch (e) { }

return false;

}

// load a script

function loadScriptAsync(url, doneCallback) {

var tag = document.createElement('script');

tag.onload = function () {

doneCallback();

};

tag.onerror = function () {

throw new Error('failed to load ' + url);

};

tag.async = true;

tag.src = url;

document.head.appendChild(tag);

}

// load and initialize a wasm module

function loadWasmModuleAsync(moduleName, jsUrl, binaryUrl, doneCallback) {

loadScriptAsync(jsUrl, function () {

var lib = window[moduleName];

window[moduleName + 'Lib'] = lib;

lib({ locateFile: function () { return binaryUrl; } } ).then( function (instance) {

window[moduleName] = instance;

doneCallback();

});

}