Stream error polluting sentry - only on Safari

Hi we are using TRPC subscriptions for streaming the LLM response. We've started seeing on error on sentry related to

AbortError
abort pipeTo from signal

. This errors only happens on safari <16.4, so it matches the chat gpt explanation. Checking the TRPC repo, found this source code, wondering if I can try catch and ignore this error somewhow.

 ts
  source
    .pipeTo(
      new WritableStream({
        write(chunkOrHead) {
          if (headDeferred) {
            const head = chunkOrHead as Record<number | string, unknown>;

            for (const [key, value] of Object.entries(chunkOrHead)) {
              const parsed = decode(value as any);
              head[key] = parsed;
            }
            headDeferred.resolve(head as THead);
            headDeferred = null;

            return;
          }
          const chunk = chunkOrHead as ChunkData;
          const [idx] = chunk;

          const controller = streamManager.getOrCreate(idx);
          controller.enqueue(chunk);
        },
        close: () => closeOrAbort(new Error('Stream closed')),
        abort: closeOrAbort,
      }),
      {
        signal: opts.abortController.signal,
      },
    )
    .catch((error) => {
      opts.onError?.({ error });
      closeOrAbort(error);
    });

 ts
  source
    .pipeTo(
      new WritableStream({
        write(chunkOrHead) {
          if (headDeferred) {
            const head = chunkOrHead as Record<number | string, unknown>;

            for (const [key, value] of Object.entries(chunkOrHead)) {
              const parsed = decode(value as any);
              head[key] = parsed;
            }
            headDeferred.resolve(head as THead);
            headDeferred = null;

            return;
          }
          const chunk = chunkOrHead as ChunkData;
          const [idx] = chunk;

          const controller = streamManager.getOrCreate(idx);
          controller.enqueue(chunk);
        },
        close: () => closeOrAbort(new Error('Stream closed')),
        abort: closeOrAbort,
      }),
      {
        signal: opts.abortController.signal,
      },
    )
    .catch((error) => {
      opts.onError?.({ error });
      closeOrAbort(error);
    });

1 Reply

CharlieCrisp•2d ago

We see a lot of these errors on sentry too! I would be very grateful for a fix.

Stream error polluting sentry - only on Safari

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