add .nvmrc

package.json

@@ -4,13 +4,14 @@
   "module": "src/index.ts",
   "type": "module",
   "scripts": {
+    "format": "prettier --write ./",
     "test": "bun test",
     "test:watch": "bun test --watch",
     "test:coverage": "bun test --coverage",
     "ci-build": "bun run build:node && bun run build:browser",
     "build:node": "bun build src/index.ts --outdir dist/node --target node --format esm --minify --production",
     "build:browser": "bun build src/index.ts --outdir dist/browser --target browser --format esm --minify --production"
-  }, 
+  },
   "devDependencies": {
     "@types/bun": "latest",
     "@types/node": "^20.0.0"