Function createErrorMiddleware

src/jrpc/jrpc.ts:40–63

(log: ConsoleLike)

 * via {@link JRPCEngineV2}.
 */
export function createErrorMiddleware(log: ConsoleLike): JRPCMiddleware<JRPCParams, unknown> {
  return (req, res, next, end) => {
    try {
      // json-rpc-engine will terminate the request when it notices this error
      if (!isValidMethod(req)) {
        res.error = new SerializableError({ code: errorCodes.rpc.invalidRequest, message: "invalid method" });
        end();
        return;
      }
      next((done) => {
        const { error } = res;
        if (!error) {
          return done();
        }
        log.error(`Auth - RPC Error: ${error.message}`, error);
        return done();
      });
    } catch (error: unknown) {
      log.error(`Auth - RPC Error thrown: ${(error as Error).message}`, error);
      res.error = new SerializableError({ code: errorCodes.rpc.internal, message: (error as Error).message });
      end();
    }
  };
}

/**
 * @deprecated Part of the JRPC V1 API. Use {@link createEngineStreamV2} instead.