If skip returns true, then the dedupe check is skipped.
key(url, opts) => string
Returns a key that is used to identify the request.
resolver(response: Response) => Response
This function is called when resolving the fetch response from duplicate calls.
By default it clones the response to allow reading the body from multiple sources.
Dedupe middleware
Prevents having multiple identical requests on the fly at the same time.
Options
(url, opts) => boolean(url, opts) => string(response: Response) => Response