Make the node-core/required-modules eslint rule smart enough
to recognize that `import '../common/index.mjs'` in ESM files
imports the mandatory 'common' module.
PR-URL: https://github.com/nodejs/node/pull/27545
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
This PR updates the current `--experimental-modules` implementation
based on the work of the modules team and reflects Phase 2 of our
new modules plan.
The largest differences from the current implementation include
* `packge.type` which can be either `module` or `commonjs`
- `type: "commonjs"`:
- `.js` is parsed as commonjs
- default for entry point without an extension is commonjs
- `type: "module"`:
- `.js` is parsed as esm
- does not support loading JSON or Native Module by default
- default for entry point without an extension is esm
* `--entry-type=[mode]`
- allows you set the type on entry point.
* A new file extension `.cjs`.
- this is specifically to support importing commonjs in the
`module` mode.
- this is only in the esm loader, the commonjs loader remains
untouched, but the extension will work in the old loader if you use
the full file path.
* `--es-module-specifier-resolution=[type]`
- options are `explicit` (default) and `node`
- by default our loader will not allow for optional extensions in
the import, the path for a module must include the extension if
there is one
- by default our loader will not allow for importing directories that
have an index file
- developers can use `--es-module-specifier-resolution=node` to
enable the commonjs specifier resolution algorithm
- This is not a “feature” but rather an implementation for
experimentation. It is expected to change before the flag is
removed
* `--experimental-json-loader`
- the only way to import json when `"type": "module"`
- when enable all `import 'thing.json'` will go through the
experimental loader independent of mode
- based on https://github.com/whatwg/html/issues/4315
* You can use `package.main` to set an entry point for a module
- the file extensions used in main will be resolved based on the
`type` of the module
Refs: https://github.com/nodejs/modules/blob/master/doc/plan-for-new-modules-implementation.md
Refs: https://github.com/GeoffreyBooth/node-import-file-specifier-resolution-proposal
Refs: https://github.com/nodejs/modules/pull/180
Refs: https://github.com/nodejs/ecmascript-modules/pull/6
Refs: https://github.com/nodejs/ecmascript-modules/pull/12
Refs: https://github.com/nodejs/ecmascript-modules/pull/28
Refs: https://github.com/nodejs/modules/issues/255
Refs: https://github.com/whatwg/html/issues/4315
Refs: https://github.com/w3c/webcomponents/issues/770
Co-authored-by: Myles Borins <MylesBorins@google.com>
Co-authored-by: John-David Dalton <john.david.dalton@gmail.com>
Co-authored-by: Evan Plaice <evanplaice@gmail.com>
Co-authored-by: Geoffrey Booth <webmaster@geoffreybooth.com>
Co-authored-by: Michaël Zasso <targos@protonmail.com>
PR-URL: https://github.com/nodejs/node/pull/26745
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Guy Bedford <guybedford@gmail.com>
Reviewed-By: Ben Coe <bencoe@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Include the offending line in the output and underline the bad token.
Before this commit, it printed "SyntaxError: Unexpected reserved word"
without indicating where the syntax error is.
Now it prints the line and underlines the offending token, like it does
for syntax errors in CJS scripts.
Minor changes are made to the test runner in order to support `*.mjs`
files in test/message.
Fixes: https://github.com/nodejs/node/issues/17277
PR-URL: https://github.com/nodejs/node/pull/17281
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
