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[eslint-plugin] Add logical border shorthand expansion to stylex-valid-shorthands#1580

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logical-border-shorthand-autofix
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[eslint-plugin] Add logical border shorthand expansion to stylex-valid-shorthands#1580
abhakat wants to merge 1 commit intomainfrom
logical-border-shorthand-autofix

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@abhakat
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@abhakat abhakat commented Apr 6, 2026

What changed / motivation ?

Expand logical border shorthands into their longhand equivalents. The rule already handled
borderTop/Right/Bottom/Left but was missing the logical (inline/block) variants.

Border-side shorthands (3-part width/style/color expansion):

  • borderInlineEnd: '1px solid red'borderInlineEndWidth + borderInlineEndStyle + borderInlineEndColor
  • borderInlineStart, borderBlockEnd, borderBlockStart — same pattern
  • borderInline, borderBlock — same pattern

Border-axis shorthands (2-value start/end expansion):

  • borderInlineColor: 'red blue'borderInlineStartColor + borderInlineEndColor
  • borderInlineStyle, borderInlineWidth, borderBlockColor, borderBlockStyle, borderBlockWidth — same pattern

Single values pass through unchanged. Incomplete borders (e.g. missing color) return CANNOT_FIX.

Linked PR/Issues

Follow-up to #1553

Additional Context

Tests covering: 3-part border expansion, 2-value axis expansion, rgba() colors,
!important propagation, incomplete borders (CANNOT_FIX), single-value passthrough.

Pre-flight checklist

…d-shorthands

Expand logical border shorthands into their longhand equivalents. These
properties currently hard-error in stylex-valid-styles via showError with
no autofix path.

Tier 1 — 3-part border expansion (width/style/color):
  borderInlineEnd, borderInlineStart, borderBlockEnd, borderBlockStart,
  borderInline, borderBlock

Tier 2 — 2-value sub-shorthand expansion (start/end):
  borderInlineColor, borderInlineStyle, borderInlineWidth,
  borderBlockColor, borderBlockStyle, borderBlockWidth
@meta-cla meta-cla Bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Apr 6, 2026
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vercel Bot commented Apr 6, 2026

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github-actions Bot commented Apr 6, 2026

workflow: benchmarks/perf

Comparison of performance test results, measured in operations per second. Larger is better.
yarn workspace v1.22.22
yarn run v1.22.22
$ node ./compare.js /tmp/tmp.k7gKp6iXDv /tmp/tmp.rnEAG25k6I

Results Base Patch Ratio
babel-plugin: stylex.create
· basic create 554 526 0.95 !!
· complex create 66 65 0.98 -
babel-plugin: stylex.createTheme
· basic themes 434 428 0.99 -
· complex themes 34 33 0.97 -
Done in 0.08s.
Done in 0.33s.

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github-actions Bot commented Apr 6, 2026

workflow: benchmarks/size

Comparison of minified (terser) and compressed (brotli) size results, measured in bytes. Smaller is better.
yarn workspace v1.22.22
yarn run v1.22.22
$ node ./compare.js /tmp/tmp.ZGOzVfmyNw /tmp/tmp.OI3mx6s2AL

Results Base Patch Ratio
@stylexjs/stylex/lib/cjs/stylex.js
· compressed 1,441 1,441 1.00
· minified 4,386 4,386 1.00
@stylexjs/stylex/lib/cjs/inject.js
· compressed 1,793 1,793 1.00
· minified 4,915 4,915 1.00
benchmarks/size/.build/bundle.js
· compressed 496,650 496,650 1.00
· minified 4,847,840 4,847,840 1.00
benchmarks/size/.build/stylex.css
· compressed 99,653 99,653 1.00
· minified 747,850 747,850 1.00
Done in 0.07s.
Done in 0.29s.

@abhakat abhakat closed this Apr 6, 2026
@abhakat abhakat deleted the logical-border-shorthand-autofix branch April 6, 2026 18:27
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