Skipping request by returning a Response in beforeRequest

[hugomrdias]

This could be useful for internal caching, mocking, etc..
Would this be an acceptable feature ?

[sholladay]

Seems like an interesting idea. But I'm curious why the built-in caching mechanisms are not sufficient? You can specify the caching mode for each request.

See: https://developer.mozilla.org/en-US/docs/Web/API/Request/cache

[hugomrdias]

For my specific case I'm trying to reduce the number of parallel requests (due to browser limits) with a local cache. Can't use http cache because the API doesn't have the proper headers. Don't ask why 😅.
Still this can be useful for other use cases and isn't too intrusive.

[sindresorhus]

Sounds useful. PR welcome.