Migrate update-outdated-pull-request-branch to Biome (#2522)

* Initial plan

* Migrate update-outdated-pull-request-branch to Biome

Co-authored-by: int128 <[email protected]>

---------

Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: int128 <[email protected]>

Author: Copilot

.github/workflows/update-outdated-pull-request-branch.yaml

@@ -21,10 +21,21 @@ defaults:
     working-directory: update-outdated-pull-request-branch
 
 jobs:
-  autofix:
-    uses: ./.github/workflows/autofix.yaml
-    with:
-      working-directory: update-outdated-pull-request-branch
+  lint:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    permissions: 
+      contents: write
+      pull-requests: write
+    steps:
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
+      - uses: actions/setup-node@a0853c24544627f65ddf259abe73b1d18a591444 # v5.0.0
+        with:
+          node-version-file: .node-version
+      - run: npm install -g pnpm@latest-10
+      - run: pnpm i
+      - run: pnpm check --write
+      - uses: int128/update-generated-files-action@f6dc44e35ce252932e9018f1c38d1e2a4ff80e14 # v2.60.0
 
   test:
     runs-on: ubuntu-latest

update-outdated-pull-request-branch/biome.json

@@ -0,0 +1,21 @@
+{
+  "$schema": "https://biomejs.dev/schemas/2.3.7/schema.json",
+  "vcs": {
+    "enabled": true,
+    "clientKind": "git",
+    "root": ".."
+  },
+  "formatter": {
+    "indentStyle": "space",
+    "lineWidth": 120
+  },
+  "linter": {
+    "enabled": true
+  },
+  "javascript": {
+    "formatter": {
+      "quoteStyle": "single",
+      "semicolons": "asNeeded"
+    }
+  }
+}

update-outdated-pull-request-branch/eslint.config.mjs

@@ -4,8 +4,7 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "format": "prettier --write **/*.ts",
-    "lint": "eslint --fix **/*.ts",
+    "check": "biome check",
     "build": "ncc build --source-map --license licenses.txt src/main.ts",
     "test": "vitest"
   },
@@ -14,16 +13,12 @@
     "@actions/github": "6.0.1"
   },
   "devDependencies": {
-    "@eslint/js": "9.35.0",
+    "@biomejs/biome": "2.3.7",
     "@tsconfig/node20": "20.1.6",
     "@types/node": "20.19.24",
     "@vercel/ncc": "0.38.4",
-    "@vitest/eslint-plugin": "1.3.9",
-    "eslint": "9.35.0",
     "pnpm": "10.15.1",
-    "prettier": "3.6.2",
     "typescript": "5.9.2",
-    "typescript-eslint": "8.43.0",
     "vitest": "3.2.4"
   },
   "packageManager": "[email protected]"