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AI Generated: Refactor gentest#1889

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NickGerleman wants to merge 8 commits intofacebook:mainfrom
NickGerleman:export-D94005983
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AI Generated: Refactor gentest#1889
NickGerleman wants to merge 8 commits intofacebook:mainfrom
NickGerleman:export-D94005983

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@NickGerleman
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Summary:
This change used Claude to make some major quality of life changes to yarn gentest. The bulk of the logic is now run in the driver, instead of the browser, and the scripts are typechecked. We rely on attributes, instead of declared style, so that we don't miss inputs the browser massages. We no longer preprocess the fixtures, to remap invalid CSS properties to valid ones. Generation now happens in parallel.

It is about neutral in terms of line count (3500 lines before and after)

Differential Revision: D94005983

NickGerleman and others added 7 commits February 21, 2026 21:54
Summary:
Add the foundational data types, enums, style properties, and C API for
expressing CSS Grid layouts in Yoga.

Includes:
- Grid style types (GridLine.h, GridTrack.h, GridTrackType.h)
- Updated enums (Display::Grid, Align::Start/End, Justify::Auto/Stretch/Start/End)
- Grid event (LayoutPassReason::kGridLayout)
- Style property accessors and member variables
- Public C API (YGGridTrackList.h/cpp, YGNodeStyle grid setters/getters)
- Layout helpers updated for new enum values (Align.h, AbsoluteLayout.cpp,
  CalculateLayout.cpp/h partial)
- Node.h: relativePosition made public
- React Native mirror of all C++ changes

Differential Revision: D93946262
Summary:
Add the core grid layout computation and integrate it into the layout
dispatcher.

Includes:
- AutoPlacement.h: auto-placement algorithm for grid items
- GridLayout.h/cpp: grid layout entry point
- TrackSizing.h: track sizing algorithm
- CalculateLayout.cpp: grid dispatch block and #include
- CMakeLists.txt: add algorithm/grid/*.cpp glob
- React Native mirror of all C++ changes

Differential Revision: D93946253
Summary:
Add grid layout benchmarks.

Includes:
- YGGridBenchmark.c: 14 benchmark scenarios
- benchmarkgrid: shell script to run benchmarks
- CMakeLists.txt: benchmarkgrid target

Differential Revision: D93946260
Summary:
Add hand-written C++ tests for the grid layout algorithm.

Includes:
- Hand-written tests: AutoPlacementTest.cpp, CreateGridTrackTest.cpp
- Modified existing tests: YGAlignBaselineTest.cpp (+3 grid baseline tests),
  YGHadOverflowTest.cpp (+1 grid overflow test)

Differential Revision: D93946259
Summary:
Add Java/Kotlin bindings for CSS Grid support. Includes grid API classes
(YogaGridTrackList, YogaGridTrackValue, YogaGridTrackType), JNI bridge
updates, enum changes (YogaDisplay, YogaAlign, YogaJustify).

Also includes React Native Android mirror of all Java/Kotlin changes.

Differential Revision: D93946256
Summary:
Add JavaScript/WASM bindings for CSS Grid support. Includes embind
bindings, TypeScript types (YGEnums.ts), Node wrapper updates
(wrapAssembly.ts).

Existing generated JS tests are updated to import GridTrackType.

Differential Revision: D93946255
Summary:
Update gentest scripts to support CSS Grid properties. Adds grid style
extraction, grid property setup, display:grid handling, and grid-aware
LTR/RTL fixture support to the C++, Java, and JavaScript test emitters.

Differential Revision: D93946258
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meta-codesync bot commented Feb 22, 2026

@NickGerleman has exported this pull request. If you are a Meta employee, you can view the originating Diff in D94005983.

@NickGerleman
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NickGerleman commented Feb 22, 2026

FYI @intergalacticspacehighway. Was having reliability issues with the script, and saw the hacks related to the start/end regexing, and had Claude take a hatchet and do some of the changes have wanted over time, since well specced.

Changes are in last commit in the PR: 52c813d

NickGerleman added a commit to NickGerleman/yoga that referenced this pull request Feb 22, 2026
Summary:
Pull Request resolved: facebook#1889

This change used Claude to make some major quality of life changes to `yarn gentest`. The bulk of the logic is now run in the driver, instead of the browser, and the scripts are typechecked. We rely on attributes, instead of declared style, so that we don't miss inputs the browser massages. We no longer preprocess the fixtures, to remap invalid CSS properties to valid ones. Generation now happens in parallel. We avoid outputting temp files to source root.

From there, I looked over major parts, and had it clean up a lot of things to taste, but I let it try to do a full rewrite for simplicity, using the original as reference.

It is about neutral in terms of line count (3500 lines before and after)

Differential Revision: D94005983
NickGerleman added a commit to NickGerleman/yoga that referenced this pull request Feb 22, 2026
Summary:
Pull Request resolved: facebook#1889

This change used Claude to make some major quality of life changes to `yarn gentest`. The bulk of the logic is now run in the driver, instead of the browser, and the scripts are typechecked. We rely on attributes, instead of declared style, so that we don't miss inputs the browser massages. We no longer preprocess the fixtures, to remap invalid CSS properties to valid ones. Generation now happens in parallel. We avoid outputting temp files to source root.

From there, I looked over major parts, and had it clean up a lot of things to taste, but I let it try to do a full rewrite for simplicity, using the original as reference.

It is about neutral in terms of line count (3500 lines before and after)

Differential Revision: D94005983
Summary:
Pull Request resolved: facebook#1889

This change used Claude to make some major quality of life changes to `yarn gentest`. The bulk of the logic is now run in the driver, instead of the browser, and the scripts are typechecked. We rely on attributes, instead of declared style, so that we don't miss inputs the browser massages. We no longer preprocess the fixtures, to remap invalid CSS properties to valid ones. Generation now happens in parallel. We avoid outputting temp files to source root.

From there, I looked over major parts, and had it clean up a lot of things to taste, but I let it try to do a full rewrite for simplicity, using the original as reference.

It is about neutral in terms of line count (3500 lines before and after)

Differential Revision: D94005983
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