for await()

in streaming.ts [40:84]
39 lines of code
10 McCabe index (conditional complexity)

        for await (const sse of _iterSSEMessages(response, controller)) {
          if (done) continue;

          if (sse.data.startsWith("[DONE]")) {
            done = true;
            continue;
          }

          if (sse.event === null) {
            let data;

            try {
              data = JSON.parse(sse.data);
            } catch (e) {
              console.error(`Could not parse message into JSON:`, sse.data);
              console.error(`From chunk:`, sse.raw);
              throw e;
            }

            if (data && data.error) {
              throw new APIError(undefined, data.error, undefined, undefined);
            }

            yield data;
          } else {
            let data;
            try {
              data = JSON.parse(sse.data);
            } catch (e) {
              console.error(`Could not parse message into JSON:`, sse.data);
              console.error(`From chunk:`, sse.raw);
              throw e;
            }
            // TODO: Is this where the error should be thrown?
            if (sse.event == "error") {
              throw new APIError(
                undefined,
                data.error,
                data.message,
                undefined,
              );
            }
            yield { event: sse.event, data: data } as any;
          }
        }