Upgrade `react-router-dom` dependency in the dashboard

[alpeb]

We're on 5.3.0 and would like to upgrade to v6, but that's a breaking change that requires manual intervention in our routes handling.

The React-router project has promised a compatibility layer to come up at some point that would avoid having to change things too much, but I feel that's a second-best solution and would prefer to have things written as per the best practice.

For anyone wanting to tackling this, we're glad to provide guidance on the overall setup of the dashboard web app in linkerd (also note that BUILD.md provides lots of details).

[hackpk]

I'd like to work on this. Also I need guidance as this will be my first issue.

[alpeb]

@hackpk Excellent. My recommendation is to first try installing linkerd in your local cluster, then try making it work with a separate web development server as explained on BUILD.md, so that you can see in realtime any changes you make to the web code. Feel free to ask any questions in the #contributors channel in our Slack.

[will-codes-things]

Is this still needed?

[kleimkuhler]

Yes @will-codes-things we're still interested in upgrading this. If you have any questions about contributing you can still go to the #contributors channel on the Linkerd Slack.

[acald-creator]

Hello there!

I wanted to reach out and see if anyone has started working on this?

If not, I would like to work on this issue.

[acald-creator]

In fact, I'm already working through the migration, and also I understand that this will require changes to the React class components, since the new version of react-router-dom is using hooks. I will raise some questions in the Slack channel if I have any.

[AgniveshChaubey]

Is this issue still opened? If yes, I would like to work on this.

[acald-creator]

From what I could tell this issue is still open but I'm currently working on this issue.

I didn't receive much feedback from Linkerd team.

[adleong]

Hi @acald-creator, is there any feedback in particular you're looking for or anything we can do to support you?

[acald-creator]

@adleong Thanks for responding! No not at this time. I'm hoping to have a PR next week. But I will reach out if I have a question.

[acald-creator]

bump

Wanted to give an update that I am still working on this. My plan was to have the PR last week, but got sidetracked.

[acald-creator]

I have a branch that I am working on, but there were some questions asked in the Slack channel which I would like to elaborate and answer in this issue or the PR I will provide.

https://github.com/acald-creator/linkerd2/tree/upgrade/react-router-dom

I want to gather all the info first and some steps taken to make this transition possible.