perf: uninstall classnames, install clsx

Author: li-jia-nan

tsconfig.json

@@ -4,19 +4,14 @@
     "moduleResolution": "node",
     "baseUrl": "./",
     "jsx": "react",
+    "types": ["node"],
     "declaration": true,
     "skipLibCheck": true,
     "esModuleInterop": true,
     "paths": {
-      "@/*": [
-        "src/*"
-      ],
-      "@@/*": [
-        ".dumi/tmp/*"
-      ],
-      "rc-resize-observer": [
-        "src/index.tsx"
-      ]
+      "@/*": ["src/*"],
+      "@@/*": [".dumi/tmp/*"],
+      "rc-resize-observer": ["src/index.tsx"]
     }
   }
-}
+}