ref: only use yarn !

package.json

@@ -1,28 +1,29 @@
 {
-  "name": "client",
+	"name": "client",
-  "version": "0.1.0",
+	"version": "0.1.0",
-  "private": true,
+	"private": true,
-  "scripts": {
+	"scripts": {
-    "dev": "next dev --turbopack",
+		"dev": "next dev --turbopack",
-    "build": "next build",
+		"build": "next build",
-    "start": "next start",
+		"start": "next start",
-    "lint": "next lint"
+		"lint": "next lint",
-  },
+		"preinstall": "node -e \"if(process.env.npm_execpath.indexOf('yarn') === -1) throw new Error('You must use Yarn to install, not NPM')\""
-  "dependencies": {
+	},
-    "next": "15.0.3",
+	"dependencies": {
-    "next-auth": "^4.24.10",
+		"next": "15.0.3",
-    "react": "19.0.0-rc-66855b96-20241106",
+		"next-auth": "^4.24.10",
-    "react-dom": "19.0.0-rc-66855b96-20241106"
+		"react": "19.0.0-rc-66855b96-20241106",
-  },
+		"react-dom": "19.0.0-rc-66855b96-20241106"
-  "devDependencies": {
+	},
-    "@types/node": "^20",
+	"devDependencies": {
-    "@types/react": "^18",
+		"@types/node": "^20",
-    "@types/react-dom": "^18",
+		"@types/react": "^18",
-    "autoprefixer": "^10.4.20",
+		"@types/react-dom": "^18",
-    "eslint": "^8",
+		"autoprefixer": "^10.4.20",
-    "eslint-config-next": "15.0.3",
+		"eslint": "^8",
-    "postcss": "^8.4.49",
+		"eslint-config-next": "15.0.3",
-    "tailwindcss": "^3.4.15",
+		"postcss": "^8.4.49",
-    "typescript": "^5"
+		"tailwindcss": "^3.4.15",
-  }
+		"typescript": "^5"
+	}
 }