Function onModuleLoaded

src/platforms/wasm/compiler/index.ts:838–915

* Callback function executed when the WASM module is loaded * Sets up the module loading infrastructure * @param {Function} fastLedLoader - The FastLED loader function

(fastLedLoader)

 * @param {Function} fastLedLoader - The FastLED loader function
 */
function onModuleLoaded(fastLedLoader) {
  // Unpack the module functions and send them to the fastledLoadSetupLoop function

  /**
   * Internal function to start FastLED with loaded module (Asyncify-enabled)
   * @async
   * @param {Object} moduleInstance - The loaded WASM module instance
   * @param {number} frameRate - Target frame rate for animations
   * @param {Array<Object>} filesJson - Files to load into virtual filesystem
   */
  async function __fastledLoadSetupLoop(moduleInstance, frameRate, filesJson) {
    const exports_exist = moduleInstance && moduleInstance._extern_setup
      && moduleInstance._extern_loop;
    if (!exports_exist) {
      console.error('FastLED setup or loop functions are not available.');
      return;
    }

    await fastledLoadSetupLoop(
      frameRate,
      moduleInstance,
      filesJson,
    );
  }
  // Start fetch now in parallel

  /**
   * Fetches and parses JSON from a given file path
   * @async
   * @param {string} fetchFilePath - Path to the JSON file to fetch
   * @returns {Promise<Object>} Parsed JSON data
   */
  const fetchJson = async (fetchFilePath) => {
    const response = await fetch(fetchFilePath);
    const data = await response.json();
    return data;
  };
  const filesJsonPromise = fetchJson('files.json');
  try {
    if (typeof fastLedLoader === 'function') {
      // Load the module
      fastLedLoader().then(async (instance) => {
        console.log('Module loaded, running FastLED...');

        // Expose the updateUiComponents method to the C++ module
        // This should be called BY C++ TO UPDATE the frontend, not the other way around
        instance._jsUiManager_updateUiComponents = function (jsonString) {
          console.log('*** C++ CALLING JS: updateUiComponents with:', jsonString);
          if (window.uiManagerInstance && window.uiManagerInstance.updateUiComponents) {
            window.uiManagerInstance.updateUiComponents(jsonString);
          } else {
            console.error('*** UI BINDING ERROR: uiManagerInstance not available ***');
          }
        };

        // Wait for the files.json to load.
        let filesJson = null;
        try {