* update deps
* update rules
use type-aware @typescript-eslint/no-shadow instead of no-shadow. do not use no-undef, rely on TypeScript instead
* fix or mute all lint errors
* react-hooks eslint plugin fails on ? syntax
* fix wrong typings in viz
* remove React as a global type
* fix eslint errors
* update version to 4.8.1
* fix a new error
The needed change is to rely on history as source of truth for location instead of window.location.
btw, This makes possible to test state syncing utils integration using createMemoryHistory()
One issue was discovered after this change:
When switching from context to discover url was incorrect. history.location inside state syncing utils didn't get the last update. This happened, because history instance created in discover wasn't used in context app and when all listeners unsubscribed from it - it stopped receiving location updates. To fix this I just reused one history instance in discover, context and their kbnUrlTracker
Before this pr:
Discover, Visualise and Dashboard in setup phase create own state containers which watch for pinned filters, time and refresh interval changes. This watching and state comparisons happen for each plugin separately and not only when a specific app is mounted. So we ended up with a bunch of similar synchronous work which happens every time query services state changes.
After this pr:
Query service exposes observable to watch for changes (state$). Discover, Visualise and Dashboard use this observable for sub url tracking instead of creating its own.
