lib

How to implement real-time websocket communication in data-fair services. Covers the full stack: server-side setup with @data-fair/lib-express/ws-server, emitting events with @data-fair/lib-node/ws-emitter, subscribing from Vue components with @data-fair/lib-vue/ws, and using @data-fair/lib-node/ws-client for Node.js programmatic WS clients and integration tests. Use this skill whenever the user wants to add websocket support, emit real-time events, subscribe to channels, implement live updates, push notifications, any pub/sub pattern in a data-fair service, or write integration tests that verify websocket behavior — even if they just say "real-time", "live updates", or "test websockets".

How to use the @data-fair/lib session management system in services that consume sessions (not login/account management). Use this skill whenever the task involves reading user identity, checking permissions, protecting routes, accessing account/organization info, or implementing authorization logic in a data-fair service -- both on the Express/Node backend and in Vue frontend components. Also use it when the user mentions session middleware, account roles, admin mode, or organization switching in a data-fair context.