How to specify RepeaterBuffer when using createPubSub()

[half2me]

When using createPubSub() it will return a Repeater by internally calling return new Repeater(...). This doesn't allow any way to customise the buffer that it uses.

In my use cases, I send a lot of data through a graphql subscription and in some cases the browser cannot receive the data fast enough. Eventually the buffer fills up at 1024 items which is the default queue size and it throws an exception crashing the entire process, not just that particular request.

Repeater.js has a solution for this, you can swap out the default buffer to something like a SlidingBuffer.

However createPubSub() doesn't have any way to change this behaviour. Could we maybe have an optional arg here to set this option?

[half2me]

All it would take is to pass the parameter here:
https://github.com/dotansimha/graphql-yoga/blob/d2e4557f7db8a5b3cef0c816f71480109102d1d9/packages/subscription/src/create-pub-sub.ts#L101
return new Repeater(..., , new SlidingBuffer(200)) for example

[n1ru4l]

Hey @half2me, this PR will solve this: #3440

[half2me]

perfect! Thanks 👍