Utoopack WebSocket proxy

From the repository root, build the local Utoopack adapter once:

bash

pnpm --filter @umijs/bundler-utoopack build

Start the WebSocket backend:

bash

pnpm --filter @example/with-utoopack-websocket-proxy backend

In another terminal, start the Umi example:

bash

pnpm --filter @example/with-utoopack-websocket-proxy dev

Open http://127.0.0.1:8000. The page should show connected and connected through the Umi proxy. The backend terminal should report exactly one connection to /ws.