react-native-audio-api/lib/module/web-core/custom/LoadCustomWasm.js

react-native-audio-api provides system for controlling audio in React Native environment compatible with Web Audio API specification

"use strict";

export const globalTag = '__rnaaCstStretch';
const eventTitle = 'rnaaCstStretchLoaded';
export let globalWasmPromise = null;
const LoadCustomWasm = async (pathPrefix = '') => {
  if (typeof window === 'undefined') {
    return null;
  }
  if (globalWasmPromise) {
    return globalWasmPromise;
  }
  globalWasmPromise = new Promise(resolve => {
    const loadScript = document.createElement('script');
    document.head.appendChild(loadScript);
    loadScript.type = 'module';
    loadScript.textContent = `
      import SignalsmithStretch from '${pathPrefix}/signalsmithStretch.mjs';
      window.${globalTag} = SignalsmithStretch;
      window.postMessage('${eventTitle}');
    `;
    function onScriptLoaded(event) {
      if (event.data !== eventTitle) {
        return;
      }
      resolve();
      window.removeEventListener('message', onScriptLoaded);
    }
    window.addEventListener('message', onScriptLoaded);
  });
};
export default LoadCustomWasm;
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