lib,src,test,doc: add node:ffi module by cjihrig · Pull Request #62072 · nodejs/node

cjihrig · 2026-03-02T14:43:52Z

This is not ready for review yet. Just opening to see if this is something the project is still interested in.

nodejs-github-bot · 2026-03-02T14:43:58Z

Review requested:

@nodejs/gyp
@nodejs/security-wg

anonrig · 2026-03-02T16:00:18Z

Yes

Qard

Looks very cool! I'm glad to see someone has picked this back up. 🙂

I did a quick review and it all looks good. My only comment is there seems to be a bunch of static strings and a private symbol which we might want to define in env_properties.h.

src/node_ffi.cc

github-actions · 2026-03-18T23:43:23Z

Failed to start CI

   ⚠  No approving reviews found
   ✘  Refusing to run CI on potentially unsafe PR

https://github.com/nodejs/node/actions/runs/23272564448

nodejs-github-bot · 2026-03-18T23:44:41Z

CI: https://ci.nodejs.org/job/node-test-pull-request/71877/

nodejs-github-bot · 2026-03-18T23:54:55Z

CI: https://ci.nodejs.org/job/node-test-pull-request/71878/

cjihrig · 2026-03-18T23:59:59Z

@anonrig I cancelled that CI run to save resources. I started https://ci.nodejs.org/job/node-test-pull-request/71877/ manually, and it's currently running.

@cjihrig

given that this is still draft and @cjihrig indicated it's not ready for review, a sign off is not yet appropriate.

mcollina

lgtm

nodejs-github-bot · 2026-03-19T03:10:14Z

CI: https://ci.nodejs.org/job/node-test-pull-request/71884/

@cjihrig

given that this is still draft and @cjihrig indicated it's not ready for review, a sign off is not yet appropriate.

jasnell · 2026-03-19T03:41:32Z

@cjihrig ... definitely interested in seeing ffi land. I was hoping @bengl's prior efforts would make progress. Once you feel this is ready to go, I'll be happy to review.

mcollina

lgtm

mcollina · 2026-04-01T17:27:16Z

@cjihrig @ShogunPanda this now conflicts, can you rebase?

codecov · 2026-04-02T16:06:16Z

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.17%. Comparing base (e775989) to head (e04304c).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #62072      +/-   ##
==========================================
- Coverage   89.71%   89.17%   -0.55%     
==========================================
  Files         695      702       +7     
  Lines      214546   216183    +1637     
  Branches    41082    41436     +354     
==========================================
+ Hits       192487   192780     +293     
- Misses      14116    15444    +1328     
- Partials     7943     7959      +16

Files with missing lines	Coverage Δ
lib/ffi.js	`95.73% <ø> (ø)`
lib/internal/bootstrap/realm.js	`96.21% <ø> (+<0.01%)`	⬆️
lib/internal/process/permission.js	`100.00% <ø> (ø)`
lib/internal/process/pre_execution.js	`98.63% <ø> (+1.40%)`	⬆️
src/env.cc	`85.45% <ø> (+0.26%)`	⬆️
src/ffi/data.cc	`5.30% <ø> (ø)`
src/ffi/types.cc	`0.00% <ø> (ø)`
src/node_binding.cc	`82.74% <ø> (ø)`
src/node_builtins.cc	`76.09% <ø> (-0.15%)`	⬇️
src/node_ffi.cc	`11.84% <ø> (ø)`
... and 8 more

... and 29 files with indirect coverage changes

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src/node_ffi.cc

ShogunPanda · 2026-04-02T18:45:17Z

@jasnell Thanks for the review, tomorrow (CEST) I'll address all of them.
Does the architecture and API look fine to you?

mcollina

lgtm

nodejs-github-bot · 2026-04-03T15:11:16Z

CI: https://ci.nodejs.org/job/node-test-pull-request/72455/

jasnell · 2026-04-03T15:31:56Z

... Does the architecture and API look fine to you?

At first glance, looks fine. I can do another review pass in the next day or two

nodejs-github-bot · 2026-04-04T07:08:37Z

CI: https://ci.nodejs.org/job/node-test-pull-request/72463/

Signed-off-by: Paolo Insogna <paolo@cowtech.it>

* src,deps,test: various improvements Signed-off-by: Paolo Insogna <paolo@cowtech.it> * deps,test: fixed failures Signed-off-by: Paolo Insogna <paolo@cowtech.it> * deps,test: fixed failures Signed-off-by: Paolo Insogna <paolo@cowtech.it> * deps,test: fixed failures Signed-off-by: Paolo Insogna <paolo@cowtech.it> * deps,test: fixed failures Signed-off-by: Paolo Insogna <paolo@cowtech.it> * doc,lib: fixed failures Signed-off-by: Paolo Insogna <paolo@cowtech.it> * deps: fixed failures Signed-off-by: Paolo Insogna <paolo@cowtech.it> * test: fixed failures Signed-off-by: Paolo Insogna <paolo@cowtech.it> --------- Signed-off-by: Paolo Insogna <paolo@cowtech.it>

* test: fixed build on Windows Signed-off-by: Paolo Insogna <paolo@cowtech.it> * test: fixed build on Windows Signed-off-by: Paolo Insogna <paolo@cowtech.it> * test: fixed build on Windows Signed-off-by: Paolo Insogna <paolo@cowtech.it> * test: fixed build on Windows Signed-off-by: Paolo Insogna <paolo@cowtech.it> * test: removed useless file Signed-off-by: Paolo Insogna <paolo@cowtech.it> --------- Signed-off-by: Paolo Insogna <paolo@cowtech.it>

Signed-off-by: Paolo Insogna <paolo@cowtech.it>

mcollina

lgtm

nodejs-github-bot · 2026-04-06T09:21:01Z

CI: https://ci.nodejs.org/job/node-test-pull-request/72504/

nodejs-github-bot · 2026-04-06T10:41:14Z

CI: https://ci.nodejs.org/job/node-test-pull-request/72510/

nodejs-github-bot · 2026-04-06T14:21:19Z

CI: https://ci.nodejs.org/job/node-test-pull-request/72517/

nodejs-github-bot added build Issues and PRs related to build files or the CI. dependencies Pull requests that update a dependency file. needs-ci PRs that need a full CI run. labels Mar 2, 2026

Qard reviewed Mar 2, 2026

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cjihrig and others added 13 commits April 6, 2026 08:12

lib,src,test,doc: add node:ffi module

285399c

ffi: Refactor to simpler API.

43d06dd

Signed-off-by: Paolo Insogna <paolo@cowtech.it>

fix: Various improvements.

b731cf4

Signed-off-by: Paolo Insogna <paolo@cowtech.it>

fix the build

d0251c4

fix lint

f968c32

remove test fixture readme

f19ed12

remove extra test file

22ddca5

tests

2ad47ef

src: formatted files

c44780a

Signed-off-by: Paolo Insogna <paolo@cowtech.it>

fixup

769be84

Signed-off-by: Paolo Insogna <paolo@cowtech.it>

fixup

e04304c

Signed-off-by: Paolo Insogna <paolo@cowtech.it>

ShogunPanda force-pushed the ffi branch from d562ab9 to e04304c Compare April 6, 2026 06:16

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