La instalación falla en un Node antiguo
Answer first: DeepSeek Harness needs Node.js ^22.19.0 or >=24.0.0. Older runtimes fail at npx, sometimes with a node-domexception warning.
- Ejecutar node -v and confirm the range.
- Install a current 22.19+ or 24+ build from the Node distributor you already use.
- Open a new terminal so PATH updates.
- Reintentar npx @deepseek-ai/[email protected] web.
0.1.2-rc.1 also fixes startup and HMR on Node 24.0-24.11.1. Version pins live on the download page.