feat(js): add biome linter and formatter

Author: alexander-akhmetov

.github/workflows/ci.yml

@@ -56,8 +56,18 @@ jobs:
         with:
           node-version: '24'
 
+      - name: Setup mise
+        uses: jdx/mise-action@5228313ee0372e111a38da051671ca30fc5a96db # v3
+        with:
+          install: true
+          install_args: biome
+          cache: true
+
       - run: pnpm install
 
+      - name: Lint
+        run: mise run lint:ts:sdk-js
+
       - name: Typecheck
         run: pnpm --filter @grafana/sigil-sdk-js run typecheck
 

js/biome.json

@@ -0,0 +1,53 @@
+{
+  "$schema": "https://biomejs.dev/schemas/2.4.11/schema.json",
+  "vcs": {
+    "enabled": true,
+    "clientKind": "git",
+    "useIgnoreFile": true,
+    "root": ".."
+  },
+  "files": {
+    "includes": ["src/**", "test/**", "!dist", "!.test-dist"]
+  },
+  "formatter": {
+    "enabled": true,
+    "indentStyle": "space",
+    "indentWidth": 2,
+    "lineWidth": 120,
+    "lineEnding": "lf"
+  },
+  "javascript": {
+    "formatter": {
+      "quoteStyle": "single",
+      "trailingCommas": "all",
+      "semicolons": "always",
+      "arrowParentheses": "always",
+      "bracketSpacing": true
+    }
+  },
+  "json": {
+    "formatter": {
+      "trailingCommas": "none"
+    }
+  },
+  "linter": {
+    "enabled": true,
+    "rules": {
+      "recommended": true,
+      "correctness": {
+        "noUnusedImports": "error"
+      },
+      "suspicious": {
+        "noExplicitAny": "off"
+      },
+      "style": {
+        "useImportType": "error",
+        "useNodejsImportProtocol": "off"
+      },
+      "complexity": {
+        "noForEach": "off",
+        "noUselessSwitchCase": "off"
+      }
+    }
+  }
+}

js/package.json

@@ -50,7 +50,9 @@
     "typecheck": "tsc --project tsconfig.json --noEmit",
     "test:build": "rm -rf .test-dist && tsc --project tsconfig.test.json",
     "test": "pnpm run test:build && node --test test/**/*.test.mjs",
-    "test:ci": "pnpm run test"
+    "test:ci": "pnpm run test",
+    "lint": "biome check .",
+    "lint:fix": "biome check --fix ."
   },
   "dependencies": {
     "@anthropic-ai/sdk": "^0.80.0",