Migrate from ESLint and Prettier to Biome

.github/workflows/ci.yml

@@ -18,20 +18,25 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v6
 
-      - name: Use pnpm
-        uses: pnpm/action-setup@v4
+      - name: Setup Biome
+        uses: biomejs/setup-biome@v2
 
-      - name: Use Node.js
-        uses: actions/setup-node@v6
-        with:
-          node-version: "24"
-          cache: "pnpm"
+      - name: Run linting
+        run: biome lint
 
-      - name: Install dependencies
-        run: pnpm install --frozen-lockfile
+  format:
+    name: Format
+    runs-on: ubuntu-24.04-arm
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Setup Biome
+        uses: biomejs/setup-biome@v2
 
-      - name: Run lint
-        run: pnpm lint
+      - name: Run formatting
+        run: biome format
 
   unit:
     name: Unit tests
@@ -54,7 +59,7 @@ jobs:
         run: pnpm install --frozen-lockfile
 
       - name: Run tests
-        run: pnpm test
+        run: pnpm unit
 
   build:
     name: Build

.gitignore

@@ -20,4 +20,3 @@ npm-debug.log
 
 # Built files
 /index.js
-

biome.json

@@ -0,0 +1,44 @@
+{
+  "$schema": "https://biomejs.dev/schemas/2.4.9/schema.json",
+  "files": {
+    "includes": ["src/**"]
+  },
+  "assist": {
+    "actions": {
+      "source": {
+        "organizeImports": "on"
+      }
+    }
+  },
+  "formatter": {
+    "indentStyle": "space"
+  },
+  "linter": {
+    "rules": {
+      "correctness": {
+        "noUnusedImports": "warn",
+        "noUnusedVariables": {
+          "level": "warn",
+          "options": {
+            "ignoreRestSiblings": true
+          }
+        }
+      },
+      "suspicious": {
+        "noConsole": "warn"
+      }
+    }
+  },
+  "css": {
+    "formatter": {
+      "quoteStyle": "single"
+    }
+  },
+  "javascript": {
+    "formatter": {
+      "quoteStyle": "single",
+      "semicolons": "asNeeded",
+      "trailingCommas": "es5"
+    }
+  }
+}

package.json

@@ -6,12 +6,13 @@
   "types": "index.d.ts",
   "scripts": {
     "build": "rollup ./src/index.js -o index.js --f cjs && babel index.js -o index.js",
-    "test": "vitest",
-    "test:watch": "vitest --watch",
-    "lint": "eslint src",
-    "prepublish": "npm run build",
+    "format": "biome format",
+    "lint": "biome lint",
     "precommit": "lint-staged",
-    "lint-staged": "lint-staged"
+    "prepublish": "npm run build",
+    "test": "pnpm lint && pnpm format && pnpm unit",
+    "unit": "vitest",
+    "unit:watch": "vitest --watch"
   },
   "files": [
     "index.js",
@@ -39,13 +40,8 @@
     "@babel/cli": "^7.6.2",
     "@babel/core": "^7.1.0",
     "@babel/preset-env": "^7.6.2",
-    "eslint": "^4.17.0",
-    "eslint-config-airbnb-base": "^12.1.0",
-    "eslint-config-prettier": "^2.9.0",
-    "eslint-plugin-import": "^2.8.0",
-    "eslint-plugin-prettier": "^2.6.0",
+    "@biomejs/biome": "2.4.9",
     "lint-staged": "^6.1.0",
-    "prettier": "^1.18.2",
     "rollup": "^1.22.0",
     "vitest": "^4.0.1"
   },
@@ -56,7 +52,7 @@
   },
   "lint-staged": {
     "*.js": [
-      "eslint --fix",
+      "biome check",
       "git add"
     ]
   },