Format all code / Add pre-commit format hook (#81)

* Add format-guard

* Format code

package.json

@@ -8,6 +8,7 @@
     "build": "npm run typecheck && vite build",
     "zipdist": "node scripts/zipdist.js",
     "typecheck": "tsc --noEmit",
+    "format": "prettier --write 'src/**/*.{js,ts,tsx}'",
     "test": "npm run build && jest",
     "test:generate": "npx tsx tests-ui/setup",
     "test:browser": "npx playwright test",
@@ -21,9 +22,12 @@
     "@types/node": "^20.14.8",
     "babel-plugin-transform-import-meta": "^2.2.1",
     "babel-plugin-transform-rename-import": "^2.3.0",
+    "husky": "^9.0.11",
     "identity-obj-proxy": "^3.0.0",
     "jest": "^29.7.0",
     "jest-environment-jsdom": "^29.7.0",
+    "lint-staged": "^15.2.7",
+    "prettier": "^3.3.2",
     "ts-jest": "^29.1.4",
     "ts-node": "^10.9.2",
     "tsx": "^4.15.6",
@@ -36,5 +40,11 @@
     "dotenv": "^16.4.5",
     "zod": "^3.23.8",
     "zod-validation-error": "^3.3.0"
+  },
+  "lint-staged": {
+    "src/**/*.{js,ts,tsx}": [
+      "prettier --write",
+      "git add"
+    ]
   }
-}
+}