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34 Commits
Author SHA1 Message Date
Joyee Cheung 4f44c6f5fe module: fix sync hook short-circuit in require() in imported CJS 
- For imported CJS, if it's not customized by asynchronous hooks,
  make sure it won't use the quirky re-invented require in all
  cases.
- When the imported CJS module is customized by synchronous hooks,
  in the synthetic module evalutation step, avoid calling the
  respective default step again.
- Make the branching of loadCJSModuleWithModuleLoad() and
  loadCJSModuleWithSpecialRequire() more explicit, and fold
  the tentative fs read in the 'commonjs' translator into the
  share createCJSModuleWrap() helper instead of checking it
  twice in the same path.

Signed-off-by: Joyee Cheung <joyeec9h3@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/62920
Fixes: https://github.com/nodejs/node/issues/63060
Reviewed-By: Paolo Insogna <paolo@cowtech.it>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Gürgün Dayıoğlu <hey@gurgun.day>
 2026-05-07 14:44:56 +00:00
Joyee Cheung 9531947fd6 fs: restore fs patchability in ESM loader 
Temporarily restore fs patchability in ESM loader as a workaround
for helping downstream projects that depend on this undocumented
hidden contract transition into using hook proper APIs. This patch
intentionally avoids adding a test and instead adds warning
comments to hopefully steer new code away from depending on it.

PR-URL: https://github.com/nodejs/node/pull/62835
Refs: https://github.com/nodejs/node/issues/62012
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
 2026-04-22 22:45:47 +00:00
Joyee Cheung 170848bc18 module: handle null source from async loader hooks in sync hooks 
This relaxes the validation in sync hooks so that it accepts
the quirky nullish source returned by the default step of the
async loader when the module being loaded is CommonJS.
When there are no customization hooks registered, a saner
synchronous default load step is used to use a property
instead of a reset nullish source to signify that the module
should go through the CJS monkey patching routes and reduce
excessive reloading from disk.

PR-URL: https://github.com/nodejs/node/pull/59929
Fixes: https://github.com/nodejs/node/issues/59384
Fixes: https://github.com/nodejs/node/issues/57327
Refs: https://github.com/nodejs/node/issues/59666
Refs: https://github.com/dygabo/load_module_test
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Jacob Smith <jacob@frende.me>
 2025-10-14 16:28:22 +00:00
Yagiz Nizipli 0fd1ecded6 meta: enable jsdoc/check-tag-names rule 
PR-URL: https://github.com/nodejs/node/pull/58521
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: LiviaMedeiros <livia@cirno.name>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
 2025-07-18 09:28:21 +00:00
Jacob Smith 5e1537c30b esm: syncify default path of ModuleLoader.load 
PR-URL: https://github.com/nodejs/node/pull/57419
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
 2025-06-11 21:53:56 +00:00
Chengzhong Wu b6df12819d esm: add experimental support for addon modules 
PR-URL: https://github.com/nodejs/node/pull/55844
Fixes: https://github.com/nodejs/node/issues/40541
Fixes: https://github.com/nodejs/node/issues/55821
Reviewed-By: Guy Bedford <guybedford@gmail.com>
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Jacob Smith <jacob@frende.me>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
 2024-12-20 11:59:08 +00:00
Geoffrey Booth 94c327c753 module: remove --experimental-default-type 
PR-URL: https://github.com/nodejs/node/pull/56092
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Jacob Smith <jacob@frende.me>
 2024-12-02 22:43:55 +00:00
Marco Ippolito b0ffe9ed35 module: simplify ts under node_modules check 
PR-URL: https://github.com/nodejs/node/pull/55440
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
 2024-10-20 09:09:56 +00:00
Joyee Cheung bdd590be73 module: use kNodeModulesRE to detect node_modules 
This is faster and more consistent with other places using the
regular expression to detect node_modules.

PR-URL: https://github.com/nodejs/node/pull/55243
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Jacob Smith <jacob@frende.me>
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
 2024-10-04 17:29:34 +00:00
Joyee Cheung 06206af181 module: unflag --experimental-require-module 
This unflags --experimental-require-module so require(esm) can be
used without the flag. For now, when require() actually encounters
an ESM, it will still emit an experimental warning. To opt out
of the feature, --no-experimental-require-module can be used.

There are some tests specifically testing ERR_REQUIRE_ESM. Some
of them are repurposed to test --no-experimental-require-module.
Some of them are modified to just expect loading require(esm) to
work, when it's appropriate.

PR-URL: https://github.com/nodejs/node/pull/55085
Refs: https://github.com/nodejs/node/issues/52697
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: LiviaMedeiros <livia@cirno.name>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Filip Skokan <panva.ip@gmail.com>
Reviewed-By: Michael Dawson <midawson@redhat.com>
Reviewed-By: Richard Lau <rlau@redhat.com>
 2024-09-26 14:21:37 +00:00
Khafra 6c85d40593 esm: use Undici/fetch data: URL parser 
Fixes: https://github.com/nodejs/node/issues/53775
PR-URL: https://github.com/nodejs/node/pull/54748
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
 2024-09-07 10:22:03 +02:00
Rafael Gonzaga 5ac969fdca lib,src: drop --experimental-network-imports 
PR-URL: https://github.com/nodejs/node/pull/53822
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
 2024-07-28 16:33:05 +00:00
Marco Ippolito 35f92d953c module: add --experimental-strip-types 
PR-URL: https://github.com/nodejs/node/pull/53725
Refs: https://github.com/nodejs/loaders/issues/217
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
Reviewed-By: Paolo Insogna <paolo@cowtech.it>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruy Adorno <ruy@vlt.sh>
 2024-07-24 16:30:06 +00:00
Rafael Gonzaga 951af83033 lib,src: remove --experimental-policy 
Signed-off-by: RafaelGSS <rafael.nunu@hotmail.com>
PR-URL: https://github.com/nodejs/node/pull/52583
Refs: https://github.com/nodejs/node/issues/52575
Reviewed-By: Yagiz Nizipli <yagiz.nizipli@sentry.io>
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
 2024-05-07 16:25:45 +00:00
Joyee Cheung db1746182b module: disallow CJS <-> ESM edges in a cycle from require(esm) 
This patch disallows CJS <-> ESM edges when they come from
require(esm) requested in ESM evalaution.

Drive-by: don't reuse the cache for imported CJS modules to stash
source code of required ESM because the former is also used for
cycle detection.

PR-URL: https://github.com/nodejs/node/pull/52264
Fixes: https://github.com/nodejs/node/issues/52145
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Guy Bedford <guybedford@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
 2024-04-08 14:45:55 +00:00
Francesco Trotta 2602c4642b esm: do not call getSource when format is commonjs 
Ensure that `defaultLoad` does not uselessly access the file system to
get the source of modules that are known to be in CommonJS format.

This allows CommonJS imports to resolve in the current phase of the
event loop.

Refs: https://github.com/eslint/eslint/pull/17683
PR-URL: https://github.com/nodejs/node/pull/50465
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
 2023-11-29 09:21:54 +00:00
Antoine du Hamel 4eafcf8ff5 esm: fallback to getSource when load returns nullish source 
When using the Modules Customization Hooks API to load CommonJS modules,
we want to support the returned value of `defaultLoad` which must be
nullish to preserve backward compatibility. This can be achieved by
fetching the source from the translator.

PR-URL: https://github.com/nodejs/node/pull/50825
Fixes: https://github.com/nodejs/node/issues/50435
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Jacob Smith <jacob@frende.me>
 2023-11-29 10:12:05 +01:00
Antoine du Hamel 0dfc59e4fc esm: bypass CJS loader in default load under --default-type=module 
This allows user to opt-out from using the monkey-patchable CJS loader,
even to load CJS modules.

PR-URL: https://github.com/nodejs/node/pull/50004
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
 2023-11-10 09:20:46 +01:00
Antoine du Hamel 08ae8401f1 esm: do not give wrong hints when detecting file format 
PR-URL: https://github.com/nodejs/node/pull/50314
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
 2023-10-23 16:01:59 +00:00
Geoffrey Booth 02926d3c6a esm: detect ESM syntax in ambiguous JavaScript 
PR-URL: https://github.com/nodejs/node/pull/50096
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Guy Bedford <guybedford@gmail.com>
 2023-10-20 15:44:56 +00:00
Antoine du Hamel d1ef6aa2db esm: use import attributes instead of import assertions 
The old import assertions proposal has been
renamed to "import attributes" with the follwing major changes:

1. The keyword is now `with` instead of `assert`.
2. Unknown assertions cause an error rather than being ignored,

This commit updates the documentation to encourage folks to use the new
syntax, and add aliases for module customization hooks.

PR-URL: https://github.com/nodejs/node/pull/50140
Fixes: https://github.com/nodejs/node/issues/50134
Refs: https://github.com/v8/v8/commit/159c82c5e6392e78b9bba7161b1bed6e23758984
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Jacob Smith <jacob@frende.me>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
 2023-10-14 03:52:38 +00:00
Antoine du Hamel 2557932db2 esm: align sync and async load implementations 
Refs: https://github.com/nodejs/node/pull/48272
PR-URL: https://github.com/nodejs/node/pull/49152
Refs: https://github.com/nodejs/node/pull/47999
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Jacob Smith <jacob@frende.me>
 2023-08-20 05:08:22 +00:00
Antoine du Hamel 3d20582c0f module: make CJS load from ESM loader 
PR-URL: https://github.com/nodejs/node/pull/47999
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Jacob Smith <jacob@frende.me>
 2023-08-13 04:23:05 +00:00
Yagiz Nizipli 9d936fa250 module: reduce url invocations in esm/load.js 
PR-URL: https://github.com/nodejs/node/pull/48337
Refs: https://github.com/nodejs/performance/issues/92
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Jacob Smith <jacob@frende.me>
 2023-06-07 01:33:59 +00:00
Yagiz Nizipli 54e0cb5051 module: reduce the number of URL initializations 
PR-URL: https://github.com/nodejs/node/pull/48272
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Matthew Aitken <maitken033380023@gmail.com>
Reviewed-By: Mestery <mestery@protonmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
 2023-06-03 13:52:54 -04:00
Gil Tayar ccada8bccc module: change default resolver to not throw on unknown scheme 
Fixes https://github.com/nodejs/loaders/issues/138

PR-URL: https://github.com/nodejs/node/pull/47824
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Guy Bedford <guybedford@gmail.com>
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
 2023-05-19 15:50:50 +00:00
Geoffrey Booth 7738844fe3 esm: move hooks handling into separate class 
PR-URL: https://github.com/nodejs/node/pull/45869
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Jacob Smith <jacob@frende.me>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
 2022-12-20 07:36:45 +00:00
Joyee Cheung 265ea1e74e bootstrap: lazy load non-essential modules 
It turns out that even with startup snapshots, there is a non-trivial
overhead for loading internal modules. This patch makes the loading
of the non-essential modules lazy again.

Caveat: we have to make some of the globals lazily-loaded too,
so the WPT runner is updated to test what the state of the global
scope is after the globals are accessed (and replaced with the
loaded value).

PR-URL: https://github.com/nodejs/node/pull/45659
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Daeyeon Jeong <daeyeon.dev@gmail.com>
Reviewed-By: Jacob Smith <jacob@frende.me>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Minwoo Jung <nodecorelab@gmail.com>
Reviewed-By: Tierney Cyren <hello@bnb.im>
 2022-12-09 22:37:35 +00:00
Antoine du Hamel f2aac0b36b esm: protect ESM loader from prototype pollution 
Fixes: https://github.com/nodejs/node/issues/45035
PR-URL: https://github.com/nodejs/node/pull/45044
Reviewed-By: Jacob Smith <jacob@frende.me>
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
 2022-10-19 18:39:16 +00:00
Guy Bedford dfa896f926 esm: refactor responseURL handling 
PR-URL: https://github.com/nodejs/node/pull/43164
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Minwoo Jung <nodecorelab@gmail.com>
Reviewed-By: Jacob Smith <jacob@frende.me>
 2022-06-03 14:29:09 -07:00
Bradley FariasJacob SmithJames M SnellJordan HarbandJames Sumners
 		ceadb473e6 esm: support https remotely and http locally under flag 
Co-authored-by: Jacob Smith <3012099+JakobJingleheimer@users.noreply.github.com>
Co-authored-by: James M Snell <jasnell@gmail.com>
Co-authored-by: Jordan Harband <ljharb@gmail.com>
Co-authored-by: James Sumners <james@sumners.email>
PR-URL: https://github.com/nodejs/node/pull/36328
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
 2022-02-09 19:47:12 -08:00
Gabriel Bota 34e3dd5034 loader: fix package resolution for edge case 
this commit solves a regression introduced with PR-40980.
if a resolve call results in a script with .mjs extension the
is automatically set to . This avoids the case where an additional
 in the same directory as the .mjs file would declare the
 to commonjs

PR-URL: https://github.com/nodejs/node/pull/41218
Refs: https://github.com/nodejs/node/pull/40980
Refs: https://github.com/yargs/yargs/issues/2068
Reviewed-By: Guy Bedford <guybedford@gmail.com>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
 2021-12-22 18:43:19 +00:00
Antoine du HamelandGeoffrey Booth 2cc7a91a5d esm: add support for JSON import assertion 
Remove V8 flag for import assertions, enabling support for the syntax;
require the import assertion syntax for imports of JSON.

Support import assertions in user loaders.

Use both resolved module URL and import assertion type as the key for
caching modules.

Co-authored-by: Geoffrey Booth <webadmin@geoffreybooth.com>

PR-URL: https://github.com/nodejs/node/pull/40250
Reviewed-By: Bradley Farias <bradley.meck@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Geoffrey Booth <webadmin@geoffreybooth.com>
 2021-11-03 20:06:55 -07:00
Jacob df22736d80 esm: consolidate ESM loader hooks 
doc: update ESM hook examples

esm: fix unsafe primordial

doc: fix ESM example linting

esm: allow source of type ArrayBuffer

doc: update ESM hook changelog to include resolve format

esm: allow all ArrayBuffers and TypedArrays for load hook source

doc: tidy code & API docs

doc: convert ESM source table header from Title Case to Sentence case

doc: add detailed explanation for getPackageType

esm: add caveat that ESMLoader::import() must NOT be renamed

esm: tidy code declaration of getFormat protocolHandlers

doc: correct ESM doc link (bad conflict resolution)

doc: update ESM hook limitation for CJS

esm: tweak preload description

doc: update ESM getPackageType() example explanation

PR-URL: https://github.com/nodejs/node/pull/37468
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Guy Bedford <guybedford@gmail.com>
Reviewed-By: Bradley Farias <bradley.meck@gmail.com>
Reviewed-By: Geoffrey Booth <webmaster@geoffreybooth.com>
 2021-09-11 18:08:35 -07:00