GraphQL over WebSocket Protocol Client & Server

graphql-ws is a JavaScript/TypeScript library that provides a coherent, zero-dependency, and lazy implementation of the GraphQL over WebSocket Protocol for both server and client applications. The current stable version is 6.0.8, with a development cadence that includes frequent patch releases for bug fixes and minor enhancements. Major versions, like v6, typically introduce targeted breaking changes related to API adjustments or adapter integrations. A crucial differentiator is its strict adherence to the modern GraphQL over WebSocket Protocol, which makes it explicitly incompatible with the older, deprecated `subscriptions-transport-ws` library and its distinct protocol. The library offers flexible integration with various Node.js WebSocket server implementations such as `ws`, Fastify's `@fastify/websocket`, and `crossws`, catering to diverse server environments.