SSE fetch gets cancelled => Hono Node server prints an error on console

[ukstv]

Disposition:

1. There is a Hono server, with a POST endpoint replying with Server-Sent Events
2. The response is consumed through fetch().response.body.getReader() Reader
3. Either (a) the reader cancels via reader.cancel(),
4. Or (b) fetch AbortSignal gets aborted

Expectation: things are working well Reality:

• Node.js reports an error: TypeError: Response body object should not be disturbed or locked :(
• You can not catch the error :(( It is just on console

The reproduction repository is on https://github.com/ukstv/hono-sse-repro

The error is from Readable.toWeb(incoming) line. It fails because incoming is "disturbed". That is kind of expected though, as the request got aborted.

[yusukebe]

Hi @ukstv

Sorry for the late reply. This maybe fixed the latest version. Can you try it?

[ukstv]

@yusukebe It works! Thank you!