Function prepareShadowRealmExecution

lib/internal/process/pre_execution.js:77–103

()

}

function prepareShadowRealmExecution() {
  // Patch the process object with legacy properties and normalizations.
  // Do not expand argv1 as it is not available in ShadowRealm.
  patchProcessObject(false);
  setupDebugEnv();

  // Disable custom loaders in ShadowRealm.
  initializeModuleLoaders({ shouldSpawnLoaderHookWorker: false, shouldPreloadModules: false });
  const {
    privateSymbols: {
      host_defined_option_symbol,
    },
  } = internalBinding('util');
  const {
    vm_dynamic_import_default_internal,
  } = internalBinding('symbols');

  // For ShadowRealm.prototype.importValue(), the referrer name is
  // always null, so the native ImportModuleDynamically() callback would
  // always fallback to look up the host-defined option from the
  // global object using host_defined_option_symbol. Using
  // vm_dynamic_import_default_internal as the host-defined option
  // instructs the JS-land importModuleDynamicallyCallback() to
  // proxy the request to defaultImportModuleDynamically().
  globalThis[host_defined_option_symbol] =
    vm_dynamic_import_default_internal;
}

function prepareExecution(options) {
  const { expandArgv1, initializeModules, isMainThread, shouldSpawnLoaderHookWorker, shouldPreloadModules } = options;