chore: add code quality tooling

biome.json

@@ -0,0 +1,15 @@
+{
+  "formatter": {
+    "enabled": true,
+    "indentStyle": "space",
+    "indentWidth": 2,
+    "includes": ["src/**/*.ts", "tests/**/*.ts", "*.json", "*.ts"]
+  },
+  "linter": {
+    "enabled": true,
+    "rules": {
+      "recommended": true
+    },
+    "includes": ["src/**/*.ts", "tests/**/*.ts", "*.json", "*.ts"]
+  }
+}

package.json

@@ -5,7 +5,11 @@
   "main": "src/index.ts",
   "scripts": {
     "dev": "bun --watch src/index.ts",
-    "start": "bun src/index.ts"
+    "start": "bun src/index.ts",
+    "typecheck": "tsc --noEmit",
+    "lint": "biome check .",
+    "format": "biome format --write .",
+    "test": "vitest run"
   },
   "dependencies": {
     "@discordjs/opus": "^0.10.0",
@@ -24,9 +28,11 @@
     "ws": "^8.20.1"
   },
   "devDependencies": {
+    "@biomejs/biome": "latest",
     "@types/bun": "latest",
     "@types/express": "^5.0.6",
     "@types/fluent-ffmpeg": "^2.1.28",
-    "@types/ws": "^8.18.1"
+    "@types/ws": "^8.18.1",
+    "vitest": "latest"
   }
 }

vitest.config.ts

@@ -0,0 +1,8 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    environment: 'node',
+    include: ['tests/**/*.test.ts']
+  }
+});