Bug: Too much event listeners attached to an AbortSignal

[ukstv]

Let's assume you call ipfs.dag.get(cid, '/s/o/m/e/v/e/r/y/l/o/n/g/p/a/t/h', {signal: abortSignal}) where ipfs is an IPFS HTTP Client. The control flow would eventually go to ipfs-http-client resolve function, and then end up in src/http.js fetch function of this package.

Every path element would add an event listener to the original abortSignal. Eventually, if the path is long enough, Node.js starts emitting MaxListenersExceededWarning warnings. I consider this a bug.

Now any-signal library allows you to clear event listeners after use. The solution to the warnings problem might be to call signal.clear after response is done. I would happily contribute, yet any-signal can not really be used here due to CJS/ESM incompatibility: You can not use ESM any-signal from CJS js-ipfs-utils package. See also: #266

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[avious00]

+1 we've seen this become a developer experience pain point - several forum and discord posts on this, e.g. [1] [2] [3]

[avious00]

@achingbrain you helped us on the anysignal portion, can we do it again? :D

[avious00]

hi @achingbrain - we're still seeing errors from this