Next.js: Trailing slash route mismatch

[Timer]

Hey guys, I think this is still an issue.
When using trailingSlash: true and basePath: /dev you get warnings on the console like so:
Warning: Prop 'href' did not match. Server: "/dev/second" Client: "/dev/second/".

Tried both ways:

<Link href="/second">
  <a>Second Page</a>
</Link>

and

<Link href="/second/">
  <a>Second Page</a>
</Link>

next version 9.4.5-canary.42

@Unsfer @Timer

_Originally posted by @marlonmarcello in https://github.com/vercel/next.js/issues/15194#issuecomment-662167808_

[Unsfer]

Can't reproduce this warning but also have mismatch in url prop in page:

Server side:

{
  "url": {
    "query": {},
    "pathname": "/events",
    "asPath": "/events"
  }
}

Client side:

{
  "url": {
    "query": {},
    "pathname": "/events",
    "asPath": "/events/"
  }
}

[Timer]

@marlonmarcello I can't reproduce this. Can you please provide a full reproduction?

[marlonmarcello]

Sure can.
I will put together a repo with the minimal set up.

[Timer]

Thank you!

[Timer]

Won't block the stable release on this unless we can get a reproduction. Thanks!

[marlonmarcello]

@Timer I don't know what I did, but I can't get the warning to appear on a minimal reproduction repo.
But I do get the same mismatch that @Unsfer mentioned.

[Timer]

Can you provide a reproduction and instructions for the thing @Unsfer mentioned? It's not immediately obvious to me how to reproduce that.

[Janpot]

@awareness481 You are using the exportTrailingSlash and not the trailingSlash option. You'll also need to use [email protected] until the next minor version. Which example were you trying to run?

[awareness481]

@awareness481 You are using the exportTrailingSlash and not the trailingSlash option. You'll also need to use [email protected] until the next minor version. Which example were you trying to run?

Incidentally, I thought I thought I had to use exportTrailingSlash: true.
I can't reproduce using trailingSlash: true in the next.config.js

[timneutkens]

Sounds like this can be closed then because exportTrailingSlash is something different and should no longer be used when the trailingSlash option is on stable.