Limit LocalStorage.setItem Attempts

Hi, @ai!

We faced NS_ERROR_OUT_OF_MEMORY error in Firefox. It might be the incognito mode or some plugin. Unfortunately, I don’t know how to reproduce the problem. It still works, but there is an issue. As I can see Logux retries to write the data all the time. I think we should limit attempts of writing to LocalStorage.

Stack trace:

 function sendToTabs (client, event, data) {
   if (!client.isLocalStorage) return
>  localStorage.setItem(storageKey(client, event), JSON.stringify(data))
 }

NS_ERROR_OUT_OF_MEMORY: No error message
  at sendToTabs(./node_modules/@logux/client/cross-tab-client.js:11:16)
  at leaderPing(./node_modules/@logux/client/cross-tab-client.js:22:3)
  at apply(./node_modules/@logux/client/cross-tab-client.js:52:32)
  at r(./node_modules/@sentry/browser/esm/helpers.js:71:23)

Firefox 72.0, Windows 10.

The error occurs every two seconds. Please let me know if I can help with the issue.

Thanks!

[ai]

Seems like they were able to write to localStorage initially (isLocalStorage is a result for initial check), but then memory was ended.

Can I ask you to help me a little with a fix here? You need to fix a few small things:

1. Add try-catch where you will set isLocalStorage = false and change the role to leader on the error.
2. Add a test for the case.

I think this PR will help you to be familiar with Logux internals.

[ai]

Release in 0.6