feat: Add rule to enforce importing components with sx prop from @primer/styled-react

.changeset/tricky-bees-promise.md

@@ -0,0 +1,5 @@
+---
+"eslint-plugin-primer-react": minor
+---
+
+feat: Add rule to enforce importing components with sx prop from @primer/styled-react

docs/rules/use-styled-react-import.md

@@ -0,0 +1,95 @@
+# use-styled-react-import
+
+💼 This rule is _disabled_ in the ✅ `recommended` config.
+
+🔧 This rule is automatically fixable by the [`--fix` CLI option](https://eslint.org/docs/latest/user-guide/command-line-interface#--fix).
+
+<!-- end auto-generated rule header -->
+
+Enforce importing components that use `sx` prop from `@primer/styled-react` instead of `@primer/react`.
+
+## Rule Details
+
+This rule detects when certain Primer React components are used with the `sx` prop and ensures they are imported from the temporary `@primer/styled-react` package instead of `@primer/react`. It also moves certain types and utilities to the styled-react package.
+
+### Components that should be imported from `@primer/styled-react` when used with `sx`:
+
+- ActionList
+- ActionMenu
+- Box
+- Breadcrumbs
+- Button
+- Flash
+- FormControl
+- Heading
+- IconButton
+- Label
+- Link
+- LinkButton
+- PageLayout
+- Text
+- TextInput
+- Truncate
+- Octicon
+- Dialog
+
+### Types and utilities that should always be imported from `@primer/styled-react`:
+
+- `BoxProps` (type)
+- `SxProp` (type)
+- `BetterSystemStyleObject` (type)
+- `sx` (utility)
+
+## Examples
+
+### ❌ Incorrect
+
+```jsx
+import {Button, Link} from '@primer/react'
+
+const Component = () => <Button sx={{color: 'red'}}>Click me</Button>
+```
+
+```jsx
+import {Box} from '@primer/react'
+
+const Component = () => <Box sx={{padding: 2}}>Content</Box>
+```
+
+```jsx
+import {sx} from '@primer/react'
+```
+
+### ✅ Correct
+
+```jsx
+import {Link} from '@primer/react'
+import {Button} from '@primer/styled-react'
+
+const Component = () => <Button sx={{color: 'red'}}>Click me</Button>
+```
+
+```jsx
+import {Box} from '@primer/styled-react'
+
+const Component = () => <Box sx={{padding: 2}}>Content</Box>
+```
+
+```jsx
+import {sx} from '@primer/styled-react'
+```
+
+```jsx
+// Components without sx prop can stay in @primer/react
+import {Button} from '@primer/react'
+
+const Component = () => <Button>Click me</Button>
+```
+
+## Options
+
+This rule has no options.
+
+## When Not To Use It
+
+This rule is specifically for migrating components that use the `sx` prop to the temporary `@primer/styled-react` package. If you're not using the `sx` prop or not participating in this migration, you can disable this rule.

src/index.js

@@ -19,6 +19,7 @@ module.exports = {
     'prefer-action-list-item-onselect': require('./rules/prefer-action-list-item-onselect'),
     'enforce-css-module-identifier-casing': require('./rules/enforce-css-module-identifier-casing'),
     'enforce-css-module-default-import': require('./rules/enforce-css-module-default-import'),
+    'use-styled-react-import': require('./rules/use-styled-react-import'),
   },
   configs: {
     recommended: require('./configs/recommended'),

src/rules/__tests__/use-styled-react-import.test.js

@@ -0,0 +1,118 @@
+const rule = require('../use-styled-react-import')
+const {RuleTester} = require('eslint')
+
+const ruleTester = new RuleTester({
+  parserOptions: {
+    ecmaVersion: 'latest',
+    sourceType: 'module',
+    ecmaFeatures: {
+      jsx: true,
+    },
+  },
+})
+
+ruleTester.run('use-styled-react-import', rule, {
+  valid: [
+    // Valid: Component used without sx prop
+    `import { Button } from '@primer/react'
+     const Component = () => <Button>Click me</Button>`,
+
+    // Valid: Component with sx prop imported from styled-react
+    `import { Button } from '@primer/styled-react'
+     const Component = () => <Button sx={{ color: 'red' }}>Click me</Button>`,
+
+    // Valid: Utilities imported from styled-react
+    `import { sx } from '@primer/styled-react'`,
+
+    // Valid: Component not in the styled list
+    `import { Avatar } from '@primer/react'
+     const Component = () => <Avatar sx={{ color: 'red' }} />`,
+
+    // Valid: Mixed imports - component without sx prop
+    `import { Button, Text } from '@primer/react'
+     const Component = () => <Button>Click me</Button>`,
+  ],
+  invalid: [
+    // Invalid: Box with sx prop imported from @primer/react
+    {
+      code: `import { Box } from '@primer/react'
+             const Component = () => <Box sx={{ color: 'red' }}>Content</Box>`,
+      output: `import { Box } from '@primer/styled-react'
+             const Component = () => <Box sx={{ color: 'red' }}>Content</Box>`,
+      errors: [
+        {
+          messageId: 'useStyledReactImport',
+          data: {componentName: 'Box'},
+        },
+      ],
+    },
+
+    // Invalid: Button with sx prop imported from @primer/react
+    {
+      code: `import { Button } from '@primer/react'
+             const Component = () => <Button sx={{ margin: 2 }}>Click me</Button>`,
+      output: `import { Button } from '@primer/styled-react'
+             const Component = () => <Button sx={{ margin: 2 }}>Click me</Button>`,
+      errors: [
+        {
+          messageId: 'useStyledReactImport',
+          data: {componentName: 'Button'},
+        },
+      ],
+    },
+
+    // Invalid: Multiple components, one with sx prop
+    {
+      code: `import { Button, Box, Avatar } from '@primer/react'
+             const Component = () => (
+               <div>
+                 <Button>Regular button</Button>
+                 <Box sx={{ padding: 2 }}>Styled box</Box>
+                 <Avatar />
+               </div>
+             )`,
+      output: `import { Button, Avatar } from '@primer/react'
+import { Box } from '@primer/styled-react'
+             const Component = () => (
+               <div>
+                 <Button>Regular button</Button>
+                 <Box sx={{ padding: 2 }}>Styled box</Box>
+                 <Avatar />
+               </div>
+             )`,
+      errors: [
+        {
+          messageId: 'useStyledReactImport',
+          data: {componentName: 'Box'},
+        },
+      ],
+    },
+
+    // Invalid: Utility import from @primer/react that should be from styled-react
+    {
+      code: `import { sx } from '@primer/react'`,
+      output: `import { sx } from '@primer/styled-react'`,
+      errors: [
+        {
+          messageId: 'moveToStyledReact',
+          data: {importName: 'sx'},
+        },
+      ],
+    },
+
+    // Invalid: Button and Link, only Button uses sx
+    {
+      code: `import { Button, Link } from '@primer/react'
+             const Component = () => <Button sx={{ color: 'red' }}>Click me</Button>`,
+      output: `import { Link } from '@primer/react'
+import { Button } from '@primer/styled-react'
+             const Component = () => <Button sx={{ color: 'red' }}>Click me</Button>`,
+      errors: [
+        {
+          messageId: 'useStyledReactImport',
+          data: {componentName: 'Button'},
+        },
+      ],
+    },
+  ],
+})