When SUPABASE_URL has a trailing slash, authentication with the Auth component does not work

[rodjoseph]

Bug report

Describe the bug

When SUPABASE_URL has a trailing slash, authentication with the Auth component leads to a page that is not found

To Reproduce

Initialize a client with a URL with a trailing slash, e.g. "'https://xxxxxxxxxxxx.supabase.co/'

You are brought to 'https://xxxxxxxxxxx.supabase.co//rest/v1....' when trying to log in with Github, Google, etc.

Expected behavior

You should be brought to 'https://xxxxxxxxxxx.supabase.co/rest/v1....'.

Should just be able to take the trailing slash out from a URL if applicable. I can do a fix if it is indeed having this behavior for others. It might not be (I'm using GitPod currently). I'd be happy to look at it

[MildTomato]

this looks like a supabase-js issue. moving it to that repo