Function initializeCJS

lib/internal/modules/cjs/loader.js:491–515

* Prepare to run CommonJS code. * This function is called during pre-execution, before any user code is run. * @returns {void}

()

 * @returns {void}
 */
function initializeCJS() {
  // This need to be done at runtime in case --expose-internals is set.

  let modules = Module.builtinModules = BuiltinModule.getAllBuiltinModuleIds();
  if (!getOptionValue('--experimental-quic')) {
    modules = modules.filter((i) => i !== 'node:quic');
  }
  if (!getOptionValue('--experimental-ffi')) {
    modules = modules.filter((i) => i !== 'node:ffi');
  }
  if (!getOptionValue('--experimental-vfs')) {
    modules = modules.filter((i) => i !== 'node:vfs');
  }
  Module.builtinModules = ObjectFreeze(modules);

  initializeCjsConditions();

  if (!getEmbedderOptions().noGlobalSearchPaths) {
    Module._initPaths();
  }

  // TODO(joyeecheung): deprecate this in favor of a proper hook?
  Module.runMain =
    require('internal/modules/run_main').executeUserEntryPoint;
}

// Given a module name, and a list of paths to test, returns the first
// matching file in the following precedence.