Deprecated Context and reference.

Hi, some usage of Select are now deprecated by React. In addition to https://github.com/JedWatson/react-select/issues/3191 there are also some problem with context:

Warning: Legacy context API has been detected within a strict-mode tree: 
    in StrictMode
    in ErrorBoundary
    in Unknown (created by HotExportedComponent)
    in AppContainer (created by HotExportedComponent)
    in HotExportedComponent

Please update the following components: MenuPlacer

Learn more about this warning here:
https://fb.me/react-strict-mode-warnings

and reference:

Warning: findDOMNode is deprecated in StrictMode. findDOMNode was passed an instance of NodeResolver which is inside StrictMode. Instead, add a ref directly to the element you want to reference.

    in div (created by Context.Consumer)
    in EmotionCssPropInternal (created by MenuList)
    in MenuList (created by MenuPlacer)
    in ScrollBlock (created by MenuPlacer)
    in NodeResolver (created by ScrollCaptor)
    in ScrollCaptor (created by ScrollCaptorSwitch)
    in ScrollCaptorSwitch (created by MenuPlacer)
    in div (created by Context.Consumer)
    in EmotionCssPropInternal (created by Menu)
    in Menu (created by MenuPlacer)
    in MenuPlacer (created by Select)
    in div (created by Context.Consumer)
    in EmotionCssPropInternal (created by SelectContainer)
    in SelectContainer (created by Select)
    in Select (created by StateManager)
    in StateManager (created by Select)
    ...

Learn more about using refs safely here:
https://fb.me/react-strict-mode-find-node

You can see them here: https://codesandbox.io/embed/react-codesandboxer-example-vhvre

Thanks. Matt’

[olelivalife]

@hiimagu The solution has been merged, but not released yet.

When do you plan to release it?

[dpordomingo]

Legacy context API warning should be partially addressed by https://github.com/JedWatson/react-select/pull/3928