What version of React Router are you using?

5.3.0

Steps to Reproduce

https://codesandbox.io/s/react-router-v5-forked-pqsli if we use an array of string as the from prop we have a warning that the propTypes is wrong. However, the code looks like it's working fine.

I've checked inside the code how computedMatch is calculated and it looks like an array won't cause any problems to it.

Expected Behavior

There should'nt be any warning if we give the component an array of string.

Actual Behavior

There is a warning if we supply an array of string.

Thanks for your help, I can write a fix for this if we agree this is an issue