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