29 lines
990 B
JavaScript
29 lines
990 B
JavaScript
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/**
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* Promisify emscripten modules
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*
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* idea taken from squoosh app: https://raw.githubusercontent.com/GoogleChromeLabs/squoosh/master/src/codecs/util.ts
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*
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* usage:
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* // create a global variable to store the initialized module once
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* let emscriptenModule
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*
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* // inside an async function:
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* // use the global as cache to the module or initialize it
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* if (!emscriptenModule) emscriptenModule = initEmscriptenModule(importedGlueCode, urlToWasmFile)
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* const module = await emscriptenModule
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*/
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export function initEmscriptenModule(moduleFactory, wasmUrl) {
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return new Promise (resolve => {
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const module = moduleFactory({
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noInitialRun: true,
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locateFile: (url) => wasmUrl ? wasmUrl : url,
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onRuntimeInitialized () {
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// hack: deleting then breaks an infinite loop
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// https://github.com/emscripten-core/emscripten/issues/5820
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delete module.then
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resolve(module)
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}
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})
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})
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}
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