Interceptors

There is no difference between regular interceptors and the web sockets interceptors. Here is an example that makes use of a manually instantiated method-scoped interceptor (class-scoped works too):

  1. @@filename()
  2. @UseInterceptors(new TransformInterceptor())
  3. @SubscribeMessage('events')
  4. handleEvent(client: Client, data: unknown): WsResponse<unknown> {
  5.   const event = 'events';
  6.   return { event, data };
  7. }
  8. @@switch
  9. @UseInterceptors(new TransformInterceptor())
  10. @SubscribeMessage('events')
  11. handleEvent(client, data) {
  12.   const event = 'events';
  13.   return { event, data };
  14. }