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[eslint-plugin] Add flex shorthand expansion to stylex-valid-shorthands #1537

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Merged
mellyeliu merged 1 commit into from
Mar 20, 2026
Merged

[eslint-plugin] Add flex shorthand expansion to stylex-valid-shorthands #1537

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298 changes: 298 additions & 0 deletions packages/@stylexjs/eslint-plugin/__tests__/stylex-valid-shorthands-test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -1752,5 +1752,303 @@ eslintTester.run('stylex-valid-shorthands', rule.default, {
},
],
},
// flex: single number expands to grow/shrink/basis
{
code: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flex: 1,
},
});
`,
output: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flexGrow: '1',
flexShrink: '1',
flexBasis: '0%',
},
});
`,
errors: [
{
message:
'Property shorthands using multiple values like "flex: 1" are not supported in StyleX. Separate into individual properties.',
},
],
},
// flex: string single number
{
code: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flex: '2',
},
});
`,
output: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flexGrow: '2',
flexShrink: '1',
flexBasis: '0%',
},
});
`,
errors: [
{
message:
'Property shorthands using multiple values like "flex: 2" are not supported in StyleX. Separate into individual properties.',
},
],
},
// flex: auto keyword
{
code: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flex: 'auto',
},
});
`,
output: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flexGrow: '1',
flexShrink: '1',
flexBasis: 'auto',
},
});
`,
errors: [
{
message:
'Property shorthands using multiple values like "flex: auto" are not supported in StyleX. Separate into individual properties.',
},
],
},
// flex: none keyword
{
code: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flex: 'none',
},
});
`,
output: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flexGrow: '0',
flexShrink: '0',
flexBasis: 'auto',
},
});
`,
errors: [
{
message:
'Property shorthands using multiple values like "flex: none" are not supported in StyleX. Separate into individual properties.',
},
],
},
// flex: initial keyword
{
code: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flex: 'initial',
},
});
`,
output: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flexGrow: '0',
flexShrink: '1',
flexBasis: 'auto',
},
});
`,
errors: [
{
message:
'Property shorthands using multiple values like "flex: initial" are not supported in StyleX. Separate into individual properties.',
},
],
},
// flex: single basis value (with unit)
{
code: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flex: '100px',
},
});
`,
output: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flexGrow: '1',
flexShrink: '1',
flexBasis: '100px',
},
});
`,
errors: [
{
message:
'Property shorthands using multiple values like "flex: 100px" are not supported in StyleX. Separate into individual properties.',
},
],
},
// flex: two numbers (grow shrink)
{
code: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flex: '1 0',
},
});
`,
output: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flexGrow: '1',
flexShrink: '0',
flexBasis: '0%',
},
});
`,
errors: [
{
message:
'Property shorthands using multiple values like "flex: 1 0" are not supported in StyleX. Separate into individual properties.',
},
],
},
// flex: number + basis
{
code: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flex: '1 30px',
},
});
`,
output: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flexGrow: '1',
flexShrink: '1',
flexBasis: '30px',
},
});
`,
errors: [
{
message:
'Property shorthands using multiple values like "flex: 1 30px" are not supported in StyleX. Separate into individual properties.',
},
],
},
// flex: three values (grow shrink basis)
{
code: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flex: '2 2 10%',
},
});
`,
output: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flexGrow: '2',
flexShrink: '2',
flexBasis: '10%',
},
});
`,
errors: [
{
message:
'Property shorthands using multiple values like "flex: 2 2 10%" are not supported in StyleX. Separate into individual properties.',
},
],
},
// flex: with !important (allowImportant)
{
options: [{ allowImportant: true }],
code: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flex: '1 0 auto !important',
},
});
`,
output: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flexGrow: '1 !important',
flexShrink: '0 !important',
flexBasis: 'auto !important',
},
});
`,
errors: [
{
message:
'Property shorthands using multiple values like "flex: 1 0 auto !important" are not supported in StyleX. Separate into individual properties.',
},
],
},
// flex: calc() basis
{
code: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flex: '1 1 calc(100% - 20px)',
},
});
`,
output: `
import * as stylex from '@stylexjs/stylex';
const styles = stylex.create({
main: {
flexGrow: '1',
flexShrink: '1',
flexBasis: 'calc(100% - 20px)',
},
});
`,
errors: [
{
message:
'Property shorthands using multiple values like "flex: 1 1 calc(100% - 20px)" are not supported in StyleX. Separate into individual properties.',
},
],
},
],
});
1 change: 1 addition & 0 deletions packages/@stylexjs/eslint-plugin/src/stylex-valid-shorthands.js
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Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,7 @@ const shorthandAliases: $ReadOnly<{
gridRow: createSpecificTransformer('grid-row'),
gridTemplate: createSpecificTransformer('grid-template'),
outline: createSpecificTransformer('outline'),
flex: createSpecificTransformer('flex'),
margin: createDirectionalTransformer('margin', 'Block', 'Inline'),
padding: createDirectionalTransformer('padding', 'Block', 'Inline'),
marginBlock: createBlockInlineTransformer('margin', 'Block'),
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