feat(dx): add Biome linter/formatter with lint scripts and CI step (#10)

.changeset/biome-lint.md

@@ -0,0 +1,5 @@
+---
+"@ilokesto/form": patch
+---
+
+Add Biome linter/formatter with `lint`, `lint:fix`, and `format` scripts. Add CI lint step. Remove `.prettierrc` in favor of Biome configuration.

.github/workflows/ci.yml

@@ -33,6 +33,9 @@ jobs:
       - name: Typecheck
         run: pnpm typecheck
 
+      - name: Lint
+        run: pnpm lint
+
       - name: Test
         run: pnpm test
 

biome.json

@@ -0,0 +1,43 @@
+{
+  "$schema": "https://biomejs.dev/schemas/2.5.5/schema.json",
+  "assist": { "actions": { "source": { "organizeImports": "off" } } },
+  "linter": {
+    "enabled": true,
+    "rules": {
+      "preset": "recommended",
+      "complexity": {
+        "noStaticOnlyClass": "off",
+        "noThisInStatic": "off"
+      },
+      "correctness": {
+        "noUnusedImports": "warn",
+        "useExhaustiveDependencies": "off",
+        "useHookAtTopLevel": "off"
+      },
+      "style": {
+        "useImportType": "off"
+      },
+      "suspicious": {
+        "noAssignInExpressions": "off",
+        "useIterableCallbackReturn": "off"
+      }
+    }
+  },
+  "formatter": {
+    "enabled": true,
+    "indentStyle": "space",
+    "indentWidth": 2,
+    "lineWidth": 100
+  },
+  "javascript": {
+    "formatter": {
+      "quoteStyle": "single",
+      "semicolons": "always",
+      "trailingCommas": "all",
+      "arrowParentheses": "asNeeded"
+    }
+  },
+  "files": {
+    "includes": ["src/**", "vite.config.ts", "biome.json", "package.json"]
+  }
+}

package.json

@@ -6,6 +6,9 @@
     "build": "rm -rf dist && tsc",
     "typecheck": "tsc --noEmit",
     "test": "vitest run",
+    "lint": "biome lint .",
+    "lint:fix": "biome lint --write .",
+    "format": "biome format --write .",
     "changeset": "changeset",
     "version": "changeset version",
     "release": "changeset publish"
@@ -73,6 +76,7 @@
     "vite": "^7.3.3",
     "vitest": "^4.1.7",
     "vue": "^3.5.34",
+    "@biomejs/biome": "^2.0.0",
     "@changesets/cli": "^2.28.0"
   },
   "peerDependencies": {