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const Utils = { // eslint-disable-line no-unused-vars
createLocateRewrite: function (execName) {
function rw(path) {
if (path.endsWith('.worker.js')) {
return `${execName}.worker.js`;
} else if (path.endsWith('.audio.worklet.js')) {
return `${execName}.audio.worklet.js`;
} else if (path.endsWith('.js')) {
return `${execName}.js`;
} else if (path.endsWith('.wasm')) {
return `${execName}.wasm`;
}
return path;
}
return rw;
},
createInstantiatePromise: function (wasmLoader) {
let loader = wasmLoader;
function instantiateWasm(imports, onSuccess) {
loader.then(function (xhr) {
WebAssembly.instantiate(xhr.response, imports).then(function (result) {
onSuccess(result['instance'], result['module']);
});
});
loader = null;
return {};
}
return instantiateWasm;
},
findCanvas: function () {
const nodes = document.getElementsByTagName('canvas');
if (nodes.length && nodes[0] instanceof HTMLCanvasElement) {
return nodes[0];
}
return null;
},
isWebGLAvailable: function (majorVersion = 1) {
let testContext = false;
try {
const testCanvas = document.createElement('canvas');
if (majorVersion === 1) {
testContext = testCanvas.getContext('webgl') || testCanvas.getContext('experimental-webgl');
} else if (majorVersion === 2) {
testContext = testCanvas.getContext('webgl2') || testCanvas.getContext('experimental-webgl2');
}
} catch (e) {
// Not available
}
return !!testContext;
},
};
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