[code-infra] Bump eslint to v9 (#46222)

Co-authored-by: Brijesh Bittu <[email protected]>

Author: brijeshb42

.eslintrc.js

@@ -82,7 +82,7 @@ module.exports = /** @type {Config} */ ({
     'eslint-plugin-material-ui',
     'eslint-plugin-react-hooks',
     '@typescript-eslint',
-    'eslint-plugin-filenames',
+    'eslint-plugin-consistent-default-export-name',
     ...(ENABLE_REACT_COMPILER_PLUGIN ? ['eslint-plugin-react-compiler'] : []),
   ],
   settings: {
@@ -390,7 +390,7 @@ module.exports = /** @type {Config} */ ({
         'docs/data/**/{css,system,tailwind}/*',
       ],
       rules: {
-        'filenames/match-exported': ['error'],
+        'consistent-default-export-name/default-export-match-filename': ['error'],
       },
     },
     {

package.json

@@ -43,8 +43,8 @@
     "template:screenshot": "cross-env BABEL_ENV=development babel-node --extensions \".tsx,.ts,.js\" ./docs/scripts/generateTemplateScreenshots",
     "install:codesandbox": "pnpm install --no-frozen-lockfile",
     "jsonlint": "node ./scripts/jsonlint.mjs",
-    "eslint": "eslint . --cache --report-unused-disable-directives --ext .js,.ts,.tsx --max-warnings 0",
-    "eslint:ci": "eslint . --report-unused-disable-directives --ext .js,.ts,.tsx --max-warnings 0",
+    "eslint": "ESLINT_USE_FLAT_CONFIG=false eslint . --cache --report-unused-disable-directives --ext .js,.ts,.tsx --max-warnings 0",
+    "eslint:ci": "ESLINT_USE_FLAT_CONFIG=false eslint . --report-unused-disable-directives --ext .js,.ts,.tsx --max-warnings 0",
     "stylelint": "stylelint --reportInvalidScopeDisables --reportNeedlessDisables \"docs/**/*.?(c|m)[jt]s?(x)\" --ignore-path .gitignore",
     "markdownlint": "markdownlint-cli2 \"**/*.md\"",
     "valelint": "pnpm vale sync && git ls-files | grep -h \".md$\" | xargs pnpm vale --filter='.Level==\"error\"'",
@@ -142,8 +142,8 @@
     "@types/node": "^20.17.50",
     "@types/react": "^19.1.6",
     "@types/yargs": "^17.0.33",
-    "@typescript-eslint/eslint-plugin": "^8.31.1",
-    "@typescript-eslint/parser": "^8.31.1",
+    "@typescript-eslint/eslint-plugin": "^8.32.1",
+    "@typescript-eslint/parser": "^8.32.1",
     "@vitejs/plugin-react": "^4.4.1",
     "@vitest/browser": "^3.1.4",
     "@vitest/coverage-v8": "^3.1.3",
@@ -161,13 +161,13 @@
     "cpy-cli": "^5.0.0",
     "cross-env": "^7.0.3",
     "danger": "^13.0.4",
-    "eslint": "^8.57.1",
+    "eslint": "^9.27.0",
     "eslint-config-airbnb": "^19.0.4",
     "eslint-config-airbnb-base": "^15.0.0",
     "eslint-config-prettier": "^10.1.5",
     "eslint-import-resolver-webpack": "^0.13.10",
     "eslint-plugin-babel": "^5.3.1",
-    "eslint-plugin-filenames": "^1.3.2",
+    "eslint-plugin-consistent-default-export-name": "^0.0.15",
     "eslint-plugin-import": "^2.31.0",
     "eslint-plugin-jsx-a11y": "^6.10.2",
     "eslint-plugin-material-ui": "workspace:^",

packages/mui-material/src/useAutocomplete/useAutocomplete.js

@@ -1,5 +1,5 @@
 'use client';
-/* eslint-disable no-constant-condition */
+
 import * as React from 'react';
 import setRef from '@mui/utils/setRef';
 import useEventCallback from '@mui/utils/useEventCallback';