This feature is experimental. Please share your experiences so we know what to keep or change.
Makes the cache assume that newRequest has the same response as the already cached oldRequest.
newRequest
oldRequest
Unpoly uses this internally when the user redirects from /old to /new. In that case, both /old and /new will cache the same response from /new.
/old
/new
The earlier request or request options.
The new request or request options.
If oldRequest wasn't found in the cache, undefined is returned.
undefined
