[mui-codemod][AccordionSummary] Add contentGutters deprecation codemods

docs/data/material/migration/migrating-from-deprecated-apis/migrating-from-deprecated-apis.md

@@ -56,6 +56,45 @@ The Accordion's `TransitionProps` was deprecated in favor of `slotProps.transiti
  />
 ```
 
+## AccordionSummary
+
+Use the [codemod](https://github.com/mui/material-ui/tree/HEAD/packages/mui-codemod#accordion-summary-classes) below to migrate the code as described in the following sections:
+
+```bash
+npx @mui/codemod@latest deprecations/accordion-summary-classes <path>
+```
+
+### .MuiAccordionSummary-contentGutters
+
+The AccordionSummary's `.MuiAccordionSummary-contentGutters` class was deprecated in favor of the `.MuiAccordionSummary-gutters` and `.MuiAccordionSummary-content` classes.
+Bear in mind that the `.MuiAccordionSummary-gutters` class is applied to the component's root, whereas the `.MuiAccordionSummary-contentGutters` and `.MuiAccordionSummary-content` classes are applied to the content element.
+
+```diff
+-.MuiAccordionSummary-contentGutters
++.MuiAccordionSummary-gutters .MuiAccordionSummary-content
+ />
+```
+
+```diff
+-.MuiAccordionSummary-root .MuiAccordionSummary-contentGutters
++.MuiAccordionSummary-root.MuiAccordionSummary-gutters .MuiAccordionSummary-content
+ />
+```
+
+```diff
+ MuiAccordionSummary: {
+   styleOverrides: {
+-    contentGutters: {
++    gutters: {
++      '& .MuiAccordionSummary-content': {
+         color: 'red',
+        },
++    },
+-    },
+   },
+ },
+```
+
 ## Avatar
 
 Use the [codemod](https://github.com/mui/material-ui/tree/HEAD/packages/mui-codemod#avatar-props) below to migrate the code as described in the following sections:

docs/translations/api-docs/accordion-summary/accordion-summary.json

@@ -20,7 +20,7 @@
       "description": "Styles applied to {{nodeName}} unless {{conditions}}.",
       "nodeName": "the children wrapper element",
       "conditions": "<code>disableGutters={true}</code>",
-      "deprecationInfo": "Combine the <a href=\"/material-ui/api/accordion-summary/#AccordionSummary-classes-gutters\">.MuiAccordionSummary-gutters</a> and <a href=\"/material-ui/api/accordion-summary/#AccordionSummary-classes-content\">.MuiAccordionSummary-content</a> classes instead."
+      "deprecationInfo": "Combine the <a href=\"/material-ui/api/accordion-summary/#AccordionSummary-classes-gutters\">.MuiAccordionSummary-gutters</a> and <a href=\"/material-ui/api/accordion-summary/#AccordionSummary-classes-content\">.MuiAccordionSummary-content</a> classes instead. <a href=\"/material-ui/migration/migrating-from-deprecated-apis/\">How to migrate</a>."
     },
     "disabled": {
       "description": "State class applied to {{nodeName}} if {{conditions}}.",

packages/mui-codemod/CONTRIBUTING.md

@@ -2,20 +2,28 @@
 
 ## Understanding the codemod
 
-The codemod is a tool that helps developers migrate thier codebase when we introduced changes in new version. The changes could be deprecations, enhancements, or breaking changes.
+The codemod is a tool that helps developers migrate their codebase when we introduce changes in a new version. The changes could be deprecations, enhancements, or breaking changes.
 
-The codemod is based on [jscodeshift](https://github.com/facebook/jscodeshift) which is a wrapper of [recast](https://github.com/benjamn/recast).
+The codemods for JS files are based on [jscodeshift](https://github.com/facebook/jscodeshift) which is a wrapper of [recast](https://github.com/benjamn/recast).
+
+The codemods for CSS files are based on [postcss](https://github.com/postcss/postcss).
 
 ## Adding a new codemod
 
 1. Create a new folder in `packages/mui-codemod/src/*/*` with the name of the codemod.
 2. The folder should include:
    - `<codemod>.js` - the transform implementation
-   - `<codemod>.test.js` - tests for the codemod (use jscodeshift from the `testUtils` folder)
+   - `postcss-plugin.js` - the postcss plugin (optional)
+   - `postcss.config.js` - the postcss config file (optional)
+   - `<codemod>.test.js` - tests for the codemods (use jscodeshift from the `testUtils` folder)
    - `test-cases` - folder with fixtures for the codemod
      - `actual.js` - the input for the codemod
      - `expected.js` - the expected output of the codemod
-3. Use [astexplorer](https://astexplorer.net/) to check the AST types and properties (set </> to @babel/parser because we use [`tsx`](https://github.com/benjamn/recast/blob/master/parsers/babel.ts) as a default parser for our codemod).
+     - `actual.css` - the input for the postcss plugin (optional)
+     - `expected.css` - the expected output of the postcss plugin (optional)
+3. Use [astexplorer](https://astexplorer.net/) to check the AST types and properties
+   - For JS codemods set </> to @babel/parser because we use [`tsx`](https://github.com/benjamn/recast/blob/master/parsers/babel.ts) as a default parser.
+   - For CSS codemods set </> to postcss
 4. [Test the codemod locally](#local)
 5. Add the codemod to README.md
 

packages/mui-codemod/README.md

@@ -7,6 +7,7 @@
 
 This repository contains a collection of codemod scripts based for use with
 [jscodeshift](https://github.com/facebook/jscodeshift) that help update the APIs.
+Some of the codemods also run [postcss](https://github.com/postcss/postcss) plugins to update CSS files.
 
 ## Setup & run
 
@@ -91,6 +92,54 @@ A combination of all deprecations.
 npx @mui/codemod@latest deprecations/accordion-props <path>
 ```
 
+#### `accordion-summary-classes`
+
+JS transforms:
+
+```diff
+ MuiAccordionSummary: {
+   styleOverrides: {
+-    contentGutters: {
++    gutters: {
++      '& .MuiAccordionSummary-content': {
+         color: 'red',
+        },
++    },
+-    },
+   },
+ },
+```
+
+```diff
+ styled(Component)(() => {
+   return {
+-    '& .MuiAccordionSummary-contentGutters': {
++    '.MuiAccordionSummary-gutters .MuiAccordionSummary-content': {
+       color: 'red',
++    },
+-    },
+   };
+ });
+```
+
+CSS transforms:
+
+```diff
+-.MuiAccordionSummary-contentGutters
++.MuiAccordionSummary-gutters .MuiAccordionSummary-content
+ />
+```
+
+```diff
+-.MuiAccordionSummary-root .MuiAccordionSummary-contentGutters
++.MuiAccordionSummary-root.MuiAccordionSummary-gutters .MuiAccordionSummary-content
+ />
+```
+
+```bash
+npx @mui/codemod@latest deprecations/accordion-summary-classes <path>
+```
+
 #### `avatar-props`
 
 ```diff

packages/mui-codemod/codemod.js

@@ -5,11 +5,15 @@ const { promises: fs } = require('fs');
 const path = require('path');
 const yargs = require('yargs');
 const jscodeshiftPackage = require('jscodeshift/package.json');
+const postcssCliPackage = require('postcss-cli/package.json');
 
 const jscodeshiftDirectory = path.dirname(require.resolve('jscodeshift'));
 const jscodeshiftExecutable = path.join(jscodeshiftDirectory, jscodeshiftPackage.bin.jscodeshift);
 
-async function runTransform(transform, files, flags, codemodFlags) {
+const postcssCliDirectory = path.dirname(require.resolve('postcss-cli'));
+const postcssExecutable = path.join(postcssCliDirectory, postcssCliPackage.bin.postcss);
+
+async function runJscodeshiftTransform(transform, files, flags, codemodFlags) {
   const paths = [
     path.resolve(__dirname, './src', `${transform}/index.js`),
     path.resolve(__dirname, './src', `${transform}.js`),
@@ -57,6 +61,8 @@ async function runTransform(transform, files, flags, codemodFlags) {
     flags.parser || 'tsx',
     '--ignore-pattern',
     '**/node_modules/**',
+    '--ignore-pattern',
+    '**/*.css',
   ];
 
   if (flags.dry) {
@@ -80,15 +86,82 @@ async function runTransform(transform, files, flags, codemodFlags) {
   }
 }
 
+const parseCssFilePaths = async (files) => {
+  const cssFiles = await Promise.all(
+    files.map(async (filePath) => {
+      const stat = await fs.stat(filePath);
+      if (stat.isDirectory()) {
+        return `${filePath}/**/*.css`;
+      }
+      if (filePath.endsWith('.css')) {
+        return filePath;
+      }
+
+      return null;
+    }),
+  );
+
+  return cssFiles.filter(Boolean);
+};
+
+async function runPostcssTransform(transform, files) {
+  // local postcss plugins are loaded through config files https://github.com/postcss/postcss-load-config/issues/17#issuecomment-253125559
+  const paths = [
+    path.resolve(__dirname, './src', `${transform}/postcss.config.js`),
+    path.resolve(__dirname, './node', `${transform}/postcss.config.js`),
+  ];
+
+  let configPath;
+  let error;
+  // eslint-disable-next-line no-restricted-syntax
+  for (const item of paths) {
+    try {
+      // eslint-disable-next-line no-await-in-loop
+      await fs.stat(item);
+      error = undefined;
+      configPath = item;
+      break;
+    } catch (srcPathError) {
+      error = srcPathError;
+      continue;
+    }
+  }
+
+  if (error) {
+    // don't throw if the file is not found, postcss transform is optional
+    if (error?.code !== 'ENOENT') {
+      throw error;
+    }
+  } else {
+    const cssPaths = await parseCssFilePaths(files);
+
+    if (cssPaths.length > 0) {
+      const args = [
+        postcssExecutable,
+        ...cssPaths,
+        '--config',
+        configPath,
+        '--replace',
+        '--verbose',
+      ];
+
+      // eslint-disable-next-line no-console -- debug information
+      console.log(`Executing command: postcss ${args.join(' ')}`);
+      const postcssProcess = childProcess.spawnSync('node', args, { stdio: 'inherit' });
+
+      if (postcssProcess.error) {
+        throw postcssProcess.error;
+      }
+    }
+  }
+}
+
 function run(argv) {
   const { codemod, paths, ...flags } = argv;
+  const files = paths.map((filePath) => path.resolve(filePath));
 
-  return runTransform(
-    codemod,
-    paths.map((filePath) => path.resolve(filePath)),
-    flags,
-    argv._,
-  );
+  runJscodeshiftTransform(codemod, files, flags, argv._);
+  runPostcssTransform(codemod, files);
 }
 
 yargs

packages/mui-codemod/package.json

@@ -35,6 +35,8 @@
     "@babel/traverse": "^7.23.9",
     "jscodeshift": "^0.13.1",
     "jscodeshift-add-imports": "^1.0.10",
+    "postcss": "^8.4.33",
+    "postcss-cli": "^8.0.0",
     "yargs": "^17.7.2"
   },
   "devDependencies": {

packages/mui-codemod/src/deprecations/accordion-summary-classes/accordion-summary-classes.js

@@ -0,0 +1,52 @@
+import { deprecatedClass, replacementSelector } from './postcss-plugin';
+
+/**
+ * @param {import('jscodeshift').FileInfo} file
+ * @param {import('jscodeshift').API} api
+ */
+export default function transformer(file, api, options) {
+  const j = api.jscodeshift;
+  const root = j(file.source);
+  const printOptions = options.printOptions;
+
+  root.find(j.ObjectProperty, { key: { name: 'contentGutters' } }).forEach((path) => {
+    if (
+      path.parent?.parent?.node.key?.name === 'styleOverrides' &&
+      path.parent?.parent?.parent?.parent?.node.key?.name === 'MuiAccordionSummary'
+    ) {
+      path.replace(
+        j.property(
+          'init',
+          j.identifier('gutters'),
+          j.objectExpression([
+            j.objectProperty(j.stringLiteral('& .MuiAccordionSummary-content'), path.node.value),
+          ]),
+        ),
+      );
+    }
+  });
+
+  const directRegex = new RegExp(`^${deprecatedClass}`);
+  root
+    .find(
+      j.Literal,
+      (literal) => typeof literal.value === 'string' && literal.value.match(directRegex),
+    )
+    .forEach((path) => {
+      path.replace(j.literal(path.value.value.replace(directRegex, replacementSelector)));
+    });
+
+  // this is a special case for contentGutters as it's applied to the content child
+  // but gutters is applied to the parent element, so the gutter class needs to go on the parent
+  const childSelectorRegex = new RegExp(`(^&)? ${deprecatedClass}`);
+  root
+    .find(
+      j.Literal,
+      (literal) => typeof literal.value === 'string' && literal.value.match(childSelectorRegex),
+    )
+    .forEach((path) => {
+      path.replace(j.literal(path.value.value.replace(childSelectorRegex, replacementSelector)));
+    });
+
+  return root.toSource(printOptions);
+}