node/test-require-module-dont-detect-cjs.js at 24648b5769dbfa71896fa32a402ddcb8ee348a8d - node - Alpaca Bi's Private Git Pepository

Nodejs/node

mirror of https://github.com/nodejs/node.git synced 2024-11-21 10:59:27 +00:00

Joyee Cheung 4d59a9deda

module: support ESM detection in the CJS loader

This patch:

1. Adds ESM syntax detection to compileFunctionForCJSLoader()
  for --experimental-detect-module and allow it to emit the
  warning for how to load ESM when it's used to parse ESM as
  CJS but detection is not enabled.
2. Moves the ESM detection of --experimental-detect-module for
  the entrypoint from executeUserEntryPoint() into
  Module.prototype._compile() and handle it directly in the
  CJS loader so that the errors thrown during compilation *and
  execution* during the loading of the entrypoint does not
  need to be bubbled all the way up. If the entrypoint doesn't
  parse as CJS, and detection is enabled, the CJS loader will
  re-load the entrypoint as ESM on the spot asynchronously using
  runEntryPointWithESMLoader() and cascadedLoader.import(). This
  is fine for the entrypoint because unlike require(ESM) we don't
  the namespace of the entrypoint synchronously, and can just
  ignore the returned value. In this case process.mainModule is
  reset to undefined as they are not available for ESM entrypoints.
3. Supports --experimental-detect-module for require(esm).

PR-URL: https://github.com/nodejs/node/pull/52047
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>

2024-04-29 20:21:53 +00:00

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 // Flags: --experimental-require-module --experimental-detect-module
 'use strict';
 require('../common');
 const assert = require('assert');
 assert.throws(() => {
   require('../fixtures/es-modules/es-note-unexpected-export-1.cjs');
 }, {
   message: /Unexpected token 'export'/
 });