Fix WebSocket.send fast call compilation for Node.js v24+

[Copilot]

V8 removed FastApiTypedArray<T> and FastApiCallbackOptions::fallback in Node.js v24, breaking compilation of the uWS_WebSocket_send_fast path for ABI 137 (v24) and 141 (v25).

Changes

• src/WebSocketWrapper.h
  • Add #include "node_version.h" (already present in the -I targets/node-VERSION/include/node path set by build.c)
  • Guard uWS_WebSocket_send_fast and its CFunction::Make registration behind #if NODE_MODULE_VERSION <= 127 (v22 and earlier retain FastApiTypedArray)
  • For v24+, fall back to a plain FunctionTemplate::New without the fast-call hint

#if NODE_MODULE_VERSION <= 127
    // Fast path: JIT-callable directly; only available on Node ≤ v22
    template <bool SSL>
    static uint32_t uWS_WebSocket_send_fast(v8::Local<v8::Object> receiver,
        const v8::FastApiTypedArray<uint8_t>& message,
        bool isBinary, bool compress, v8::FastApiCallbackOptions& options) { ... }
#endif

// In init():
#if NODE_MODULE_VERSION <= 127
    static v8::CFunction fast_send = v8::CFunction::Make(uWS_WebSocket_send_fast<SSL>);
    wsTemplateLocal->PrototypeTemplate()->Set(..., FunctionTemplate::New(isolate,
        uWS_WebSocket_send<SSL>, ..., &fast_send));
#else
    wsTemplateLocal->PrototypeTemplate()->Set(..., FunctionTemplate::New(isolate,
        uWS_WebSocket_send<SSL>));
#endif

Version mapping for reference: NODE_MODULE_VERSION 115 = v20, 127 = v22, 137 = v24, 141 = v25.

---

📍 Connect Copilot coding agent with Jira, Azure Boards or Linear to delegate work to Copilot in one click without leaving your project management tool.