Function importModuleDynamicallyCallback

lib/internal/modules/esm/utils.js:263–295

* Asynchronously imports a module dynamically using a callback function. The native callback. * @param {symbol} referrerSymbol - Referrer symbol of the registered script, function, module, or contextified object. * @param {string} specifier - The module specifier string. * @param {number} phase -

(referrerSymbol, specifier, phase, attributes,
                                               referrerName)

 * @throws {ERR_VM_DYNAMIC_IMPORT_CALLBACK_MISSING} - If the callback function is missing.
 */
async function importModuleDynamicallyCallback(referrerSymbol, specifier, phase, attributes,
                                               referrerName) {
  // For user-provided vm.constants.USE_MAIN_CONTEXT_DEFAULT_LOADER, emit the warning
  // and fall back to the default loader.
  if (referrerSymbol === vm_dynamic_import_main_context_default) {
    emitExperimentalWarning('vm.USE_MAIN_CONTEXT_DEFAULT_LOADER');
    return defaultImportModuleDynamicallyForScript(specifier, phase, attributes, referrerName);
  }
  // For script compiled internally that should use the default loader to handle dynamic
  // import, proxy the request to the default loader without the warning.
  if (referrerSymbol === vm_dynamic_import_default_internal) {
    return defaultImportModuleDynamicallyForScript(specifier, phase, attributes, referrerName);
  }
  // For SourceTextModules compiled internally, proxy the request to the default loader.
  if (referrerSymbol === source_text_module_default_hdo) {
    return defaultImportModuleDynamicallyForModule(specifier, phase, attributes, referrerName);
  }
  // For embedder entry point ESM, only allow built-in modules.
  if (referrerSymbol === embedder_module_hdo) {
    return importModuleDynamicallyForEmbedder(specifier, phase, attributes, referrerName);
  }

  if (moduleRegistries.has(referrerSymbol)) {
    const { importModuleDynamically, callbackReferrer } = moduleRegistries.get(referrerSymbol);
    if (importModuleDynamically !== undefined) {
      return importModuleDynamically(specifier, callbackReferrer, attributes, phase);
    }
  }
  if (referrerSymbol === vm_dynamic_import_missing_flag) {
    throw new ERR_VM_DYNAMIC_IMPORT_CALLBACK_MISSING_FLAG();
  }
  throw new ERR_VM_DYNAMIC_IMPORT_CALLBACK_MISSING();
}

let _shouldSpawnLoaderHookWorker = true;
/**