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module: handle null source from async loader hooks in sync hooks #59929
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          Codecov Report❌ Patch coverage is  
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##             main   #59929   +/-   ##
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           This is necessary to fix known issues with sync/async loader hook interop. Can I get some reviews please? @nodejs/loaders  | 
    
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Thank you, I've always disliked this “null means this“ pattern and at least this makes it clearer and more explicit. Maybe when we remove the async hooks we can get rid of this pattern.
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    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.
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           Addressed the comments and CI is finally green. Can you take a look again? Thanks! @GeoffreyBooth @JakobJingleheimer  | 
    
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           Landed in 170848b  | 
    
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: #59929 Fixes: #59384 Fixes: #57327 Refs: #59666 Refs: https://github.com/dygabo/load_module_test Reviewed-By: Geoffrey Booth <[email protected]> Reviewed-By: Jacob Smith <[email protected]>
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: #59929 Fixes: #59384 Fixes: #57327 Refs: #59666 Refs: https://github.com/dygabo/load_module_test Reviewed-By: Geoffrey Booth <[email protected]> Reviewed-By: Jacob Smith <[email protected]>
This MR contains the following updates: | Package | Update | Change | |---|---|---| | [node](https://nodejs.org) ([source](https://github.com/nodejs/node)) | minor | `25.0.0` -> `25.1.0` | MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot). **Proposed changes to behavior should be submitted there as MRs.** --- ### Release Notes <details> <summary>nodejs/node (node)</summary> ### [`v25.1.0`](https://github.com/nodejs/node/releases/tag/v25.1.0): 2025-10-28, Version 25.1.0 (Current), @​aduh95 [Compare Source](nodejs/node@v25.0.0...v25.1.0) ##### Notable Changes - \[[`4395fe14b9`](nodejs/node@4395fe14b9)] - **(SEMVER-MINOR)** **http**: add optimizeEmptyRequests server option (Rafael Gonzaga) [#​59778](nodejs/node#59778) - \[[`2e55c6ad04`](nodejs/node@2e55c6ad04)] - **(SEMVER-MINOR)** **sqlite**: allow setting defensive flag (Bart Louwers) [#​60217](nodejs/node#60217) - \[[`f437204491`](nodejs/node@f437204491)] - **(SEMVER-MINOR)** **src**: add watch config namespace (Marco Ippolito) [#​60178](nodejs/node#60178) ##### Commits - \[[`bb27766bd5`](nodejs/node@bb27766bd5)] - **benchmark**: improve cpu.sh for safety and usability (Nam Yooseong) [#​60162](nodejs/node#60162) - \[[`e600711c20`](nodejs/node@e600711c20)] - **benchmark**: add benchmark for leaf source text modules (Joyee Cheung) [#​60205](nodejs/node#60205) - \[[`1bbcdf9039`](nodejs/node@1bbcdf9039)] - **benchmark**: add vm.SourceTextModule benchmark (Joyee Cheung) [#​59396](nodejs/node#59396) - \[[`22fa6bd28b`](nodejs/node@22fa6bd28b)] - **build**: ibmi follow aix visibility (SRAVANI GUNDEPALLI) [#​60360](nodejs/node#60360) - \[[`931028400e`](nodejs/node@931028400e)] - **build**: use call command when calling python configure (Jacob Nichols) [#​60098](nodejs/node#60098) - \[[`17fde3f3d1`](nodejs/node@17fde3f3d1)] - **build**: build v8 with -fvisibility=hidden -fvisibility-inlines-hidden (Joyee Cheung) [#​56290](nodejs/node#56290) - \[[`04cc7aae5e`](nodejs/node@04cc7aae5e)] - **build**: remove V8\_COMPRESS\_POINTERS\_IN\_ISOLATE\_CAGE defs (Joyee Cheung) [#​60296](nodejs/node#60296) - \[[`8a2053060d`](nodejs/node@8a2053060d)] - **crypto**: update root certificates to NSS 3.116 (Node.js GitHub Bot) [#​59956](nodejs/node#59956) - \[[`fe91c0f755`](nodejs/node@fe91c0f755)] - **deps**: update simdjson to 4.0.7 (Node.js GitHub Bot) [#​59883](nodejs/node#59883) - \[[`aacfc0d212`](nodejs/node@aacfc0d212)] - **deps**: update corepack to 0.34.1 (Node.js GitHub Bot) [#​60314](nodejs/node#60314) - \[[`8596891a71`](nodejs/node@8596891a71)] - **deps**: update inspector\_protocol to [`af7f5a8`](nodejs/node@af7f5a8) (Node.js GitHub Bot) [#​60312](nodejs/node#60312) - \[[`21bcd0eb2f`](nodejs/node@21bcd0eb2f)] - **deps**: V8: cherry-pick [`3d0f462`](nodejs/node@3d0f462a17ff) (Joyee Cheung) [#​59396](nodejs/node#59396) - \[[`673558501c`](nodejs/node@673558501c)] - **deps**: update googletest to [`279f847`](nodejs/node@279f847) (Node.js GitHub Bot) [#​60219](nodejs/node#60219) - \[[`425a1879b1`](nodejs/node@425a1879b1)] - **doc**: mention more codemods in `deprecations.md` (Augustin Mauroy) [#​60243](nodejs/node#60243) - \[[`563e1317f3`](nodejs/node@563e1317f3)] - **doc**: remove unnecessary statement of web storage (Deokjin Kim) [#​60363](nodejs/node#60363) - \[[`064c8c5cfd`](nodejs/node@064c8c5cfd)] - **doc**: add missing CAA type to dns.resolveAny() & dnsPromises.resolveAny() (Jimmy Leung) [#​58899](nodejs/node#58899) - \[[`99e357af35`](nodejs/node@99e357af35)] - **doc**: use `any` for `worker_threads.Worker` 'error' event argument `err` (Jonas Geiler) [#​60300](nodejs/node#60300) - \[[`8ccff0d934`](nodejs/node@8ccff0d934)] - **doc**: update decorator documentation to reflect actual policy (Muhammad Salman Aziz) [#​60288](nodejs/node#60288) - \[[`bac70c6ef3`](nodejs/node@bac70c6ef3)] - **doc**: document wildcard supported by tools/test.py (Joyee Cheung) [#​60265](nodejs/node#60265) - \[[`8492bc6a88`](nodejs/node@8492bc6a88)] - **doc**: add --heap-snapshot-on-oom to useful v8 flag (jakecastelli) [#​60260](nodejs/node#60260) - \[[`0f0d3c0e47`](nodejs/node@0f0d3c0e47)] - **doc**: fix `blob.bytes()` heading level (XTY) [#​60252](nodejs/node#60252) - \[[`8c8525cf93`](nodejs/node@8c8525cf93)] - **doc**: fix not working code example in vm docs (Artur Gawlik) [#​60224](nodejs/node#60224) - \[[`8a6de3866c`](nodejs/node@8a6de3866c)] - **doc, assert**: correct order of changes entries (Gerhard Stöbich) [#​60304](nodejs/node#60304) - \[[`6bacb6555a`](nodejs/node@6bacb6555a)] - **doc, module**: change async customization hooks to experimental (Gerhard Stöbich) [#​60302](nodejs/node#60302) - \[[`6f3b16df16`](nodejs/node@6f3b16df16)] - **esm**: use index-based resolution callbacks (Joyee Cheung) [#​59396](nodejs/node#59396) - \[[`95644a432c`](nodejs/node@95644a432c)] - **http**: lazy allocate cookies array (Robert Nagy) [#​59734](nodejs/node#59734) - \[[`4395fe14b9`](nodejs/node@4395fe14b9)] - **(SEMVER-MINOR)** **http**: add optimizeEmptyRequests server option (Rafael Gonzaga) [#​59778](nodejs/node#59778) - \[[`f1aa1eaaf5`](nodejs/node@f1aa1eaaf5)] - **inspector**: add network payload buffer size limits (Chengzhong Wu) [#​60236](nodejs/node#60236) - \[[`64fc625bf9`](nodejs/node@64fc625bf9)] - **inspector**: support handshake response for websocket inspection (Shima Ryuhei) [#​60225](nodejs/node#60225) - \[[`0ecbb806a8`](nodejs/node@0ecbb806a8)] - **lib**: fix typo in createBlobReaderStream (SeokHun) [#​60132](nodejs/node#60132) - \[[`ffec5927fd`](nodejs/node@ffec5927fd)] - **meta**: fix typo in test-shared workflow name (Ronit Sabhaya) [#​60321](nodejs/node#60321) - \[[`a02897e157`](nodejs/node@a02897e157)] - **meta**: move one or more collaborators to emeritus (Node.js GitHub Bot) [#​60325](nodejs/node#60325) - \[[`59223a7831`](nodejs/node@59223a7831)] - **meta**: loop userland-migrations in deprecations (Chengzhong Wu) [#​60299](nodejs/node#60299) - \[[`2d48d17696`](nodejs/node@2d48d17696)] - **module**: refactor and clarify async loader hook customizations (Joyee Cheung) [#​60278](nodejs/node#60278) - \[[`be1b84fd93`](nodejs/node@be1b84fd93)] - **module**: handle null source from async loader hooks in sync hooks (Joyee Cheung) [#​59929](nodejs/node#59929) - \[[`063fbd87d3`](nodejs/node@063fbd87d3)] - **msi**: fix WiX warnings (Stefan Stojanovic) [#​60251](nodejs/node#60251) - \[[`2e55c6ad04`](nodejs/node@2e55c6ad04)] - **(SEMVER-MINOR)** **sqlite**: allow setting defensive flag (Bart Louwers) [#​60217](nodejs/node#60217) - \[[`dc93d6988a`](nodejs/node@dc93d6988a)] - **src**: fix timing of snapshot serialize callback (Joyee Cheung) [#​60434](nodejs/node#60434) - \[[`267e1b3817`](nodejs/node@267e1b3817)] - **src**: add COUNT\_GENERIC\_USAGE utility for tests (Joyee Cheung) [#​60434](nodejs/node#60434) - \[[`4a5d7a4c2a`](nodejs/node@4a5d7a4c2a)] - **src**: conditionally disable source phase imports by default (Shelley Vohr) [#​60364](nodejs/node#60364) - \[[`f437204491`](nodejs/node@f437204491)] - **(SEMVER-MINOR)** **src**: add watch config namespace (Marco Ippolito) [#​60178](nodejs/node#60178) - \[[`36837fa0f9`](nodejs/node@36837fa0f9)] - **src**: use cached primordials\_string (Sohyeon Kim) [#​60255](nodejs/node#60255) - \[[`df8396ad37`](nodejs/node@df8396ad37)] - **src**: replace Environment::GetCurrent with args.GetIsolate (Sohyeon Kim) [#​60256](nodejs/node#60256) - \[[`5dd670b2b9`](nodejs/node@5dd670b2b9)] - **src**: initial enablement of IsolateGroups (James M Snell) [#​60254](nodejs/node#60254) - \[[`afdb362933`](nodejs/node@afdb362933)] - **src**: use `Utf8Value` and `TwoByteValue` instead of V8 helpers (Anna Henningsen) [#​60244](nodejs/node#60244) - \[[`a40e533e72`](nodejs/node@a40e533e72)] - **src**: add a default branch for module phase (Chengzhong Wu) [#​60261](nodejs/node#60261) - \[[`42729f07ee`](nodejs/node@42729f07ee)] - **src**: stop using deprecated v8::Context::GetIsolate (Michaël Zasso) [#​60223](nodejs/node#60223) - \[[`7a6542c205`](nodejs/node@7a6542c205)] - **test**: skip failing test on macOS 15.7+ (Antoine du Hamel) [#​60419](nodejs/node#60419) - \[[`29a5855a4f`](nodejs/node@29a5855a4f)] - **test**: ensure assertions are reachable in `test/addons` (Antoine du Hamel) [#​60142](nodejs/node#60142) - \[[`12773d19c4`](nodejs/node@12773d19c4)] - **test**: increase debugger waitFor timeout on macOS (Chengzhong Wu) [#​60367](nodejs/node#60367) - \[[`0b38de3e9e`](nodejs/node@0b38de3e9e)] - **test**: put helper in test-runner-output into common (Joyee Cheung) [#​60330](nodejs/node#60330) - \[[`6de2407c44`](nodejs/node@6de2407c44)] - **test**: fix small compile warning in test\_network\_requests\_buffer.cc (xiaocainiao633) [#​60281](nodejs/node#60281) - \[[`4b23ac8613`](nodejs/node@4b23ac8613)] - **test**: fix status when compiled without inspector (Antoine du Hamel) [#​60289](nodejs/node#60289) - \[[`a07f32e326`](nodejs/node@a07f32e326)] - **test**: split test-runner-watch-mode-kill-signal (Joyee Cheung) [#​60298](nodejs/node#60298) - \[[`30451d32d7`](nodejs/node@30451d32d7)] - **test**: fix incorrect calculation in test-perf-hooks.js (Joyee Cheung) [#​60271](nodejs/node#60271) - \[[`e3c3b48f1c`](nodejs/node@e3c3b48f1c)] - **test**: ignore EPIPE errors in https proxy invalid URL test (Joyee Cheung) [#​60269](nodejs/node#60269) - \[[`405a9c4c5f`](nodejs/node@405a9c4c5f)] - **test**: parallelize test-without-async-context-frame correctly (Joyee Cheung) [#​60273](nodejs/node#60273) - \[[`ffeebebc71`](nodejs/node@ffeebebc71)] - **test**: make test-worker-prof more tolerant (Joyee Cheung) [#​60272](nodejs/node#60272) - \[[`26b01bf170`](nodejs/node@26b01bf170)] - **test**: skip sea tests on x64 macOS (Joyee Cheung) [#​60250](nodejs/node#60250) - \[[`8caae1a05b`](nodejs/node@8caae1a05b)] - **test**: move sea tests into test/sea (Joyee Cheung) [#​60250](nodejs/node#60250) - \[[`3d183e3e9f`](nodejs/node@3d183e3e9f)] - **test,crypto**: fix conditional SHA3-\* skip on BoringSSL (Filip Skokan) [#​60379](nodejs/node#60379) - \[[`e83dbcba94`](nodejs/node@e83dbcba94)] - **test,crypto**: sha3 algorithms aren't supported with BoringSSL (Shelley Vohr) [#​60374](nodejs/node#60374) - \[[`3d89331496`](nodejs/node@3d89331496)] - **test\_runner**: use module.registerHooks in module mocks (Joyee Cheung) [#​60326](nodejs/node#60326) - \[[`377e8ce85a`](nodejs/node@377e8ce85a)] - **tls**: avoid external memory leak on invalid protocol versions (Shelley Vohr) [#​60390](nodejs/node#60390) - \[[`ae4858c1f6`](nodejs/node@ae4858c1f6)] - **tools**: add an option to generate lighter archives (Antoine du Hamel) [#​60294](nodejs/node#60294) - \[[`cb615b1a2e`](nodejs/node@cb615b1a2e)] - **tools**: skip test-shared workflow for draft MRs (Michaël Zasso) [#​60365](nodejs/node#60365) - \[[`03b034731e`](nodejs/node@03b034731e)] - **tools**: disable inspector on macOS-shared to reduce flakiness (Antoine du Hamel) [#​60320](nodejs/node#60320) - \[[`f402b4e1d1`](nodejs/node@f402b4e1d1)] - **tools**: show diff alongside the error in Nix linter (Antoine du Hamel) [#​60301](nodejs/node#60301) - \[[`5d5c8483fb`](nodejs/node@5d5c8483fb)] - **tools**: run CI with shared libs on GHA (Antoine du Hamel) [#​60121](nodejs/node#60121) - \[[`e8fdd8d2e8`](nodejs/node@e8fdd8d2e8)] - **tools**: update gyp-next to 0.20.5 (Node.js GitHub Bot) [#​60313](nodejs/node#60313) - \[[`6e8b029a21`](nodejs/node@6e8b029a21)] - **tools**: limit inspector protocol MR title length (Chengzhong Wu) [#​60324](nodejs/node#60324) - \[[`a5073086c6`](nodejs/node@a5073086c6)] - **tools**: fix inspector\_protocol updater (Chengzhong Wu) [#​60277](nodejs/node#60277) - \[[`47fa765bff`](nodejs/node@47fa765bff)] - **tools**: optimize wildcard execution in tools/test.py (Joyee Cheung) [#​60266](nodejs/node#60266) - \[[`11ebb0447d`](nodejs/node@11ebb0447d)] - **tools**: add C++ lint rule to avoid using `String::Utf8Value` (Anna Henningsen) [#​60244](nodejs/node#60244) - \[[`14f3189670`](nodejs/node@14f3189670)] - **tools**: add inspector\_protocol updater (Chengzhong Wu) [#​60245](nodejs/node#60245) - \[[`ef4c596fc6`](nodejs/node@ef4c596fc6)] - **typings**: add missing properties and method in Worker (Woohyun Sung) [#​60257](nodejs/node#60257) - \[[`09ae6fc065`](nodejs/node@09ae6fc065)] - **typings**: add missing properties in HTTPParser (Woohyun Sung) [#​60257](nodejs/node#60257) - \[[`9ecaf41f8e`](nodejs/node@9ecaf41f8e)] - **typings**: delete undefined property in ConfigBinding (Woohyun Sung) [#​60257](nodejs/node#60257) - \[[`4a86016e86`](nodejs/node@4a86016e86)] - **util**: use more defensive code when inspecting error objects (Antoine du Hamel) [#​60139](nodejs/node#60139) - \[[`9e6d6cec59`](nodejs/node@9e6d6cec59)] - **util**: mark special properties when inspecting them (Ruben Bridgewater) [#​60131](nodejs/node#60131) - \[[`79b2387fd9`](nodejs/node@79b2387fd9)] - **vm**: make vm.Module.evaluate() conditionally synchronous (Joyee Cheung) [#​60205](nodejs/node#60205) - \[[`e5559f3be3`](nodejs/node@e5559f3be3)] - **win**: upgrade Visual Studio workload from 2019 to 2022 (Jiawen Geng) [#​60318](nodejs/node#60318) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. 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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.
Fixes: #59384
Fixes: #57327
Refs: #59666
Refs: https://github.com/dygabo/load_module_test