Hello yarn berry

packages/center/package.json

@@ -5,8 +5,16 @@
     "repository": "https://github.com/hydro-dev/Hydro.git",
     "author": "undefined <i@undefined.moe>",
     "license": "SEE LICENSE IN LICENSE",
+    "preferUnplugged": true,
     "dependencies": {
         "js-yaml": "^4.1.0",
         "superagent": "^6.1.0"
+    },
+    "devDependencies": {
+        "@types/js-yaml": "^4.0.1",
+        "@types/node": "^15.6.1"
+    },
+    "peerDependencies": {
+        "hydrooj": "*"
     }
 }