findDOMNode is deprecated in StrictMode

[yanai101]

this is the error message that I have in the console: (using ts )

Warning: findDOMNode is deprecated in StrictMode. findDOMNode was passed an instance of Transition which is inside StrictMode. Instead, add a ref directly to the element you want to reference. Learn more about using refs safely here: https://fb.me/react-strict-mode-find-node
    in div (created by GrowlMessage)
    in GrowlMessage (created by Growl)
    in Transition (created by CSSTransition)
    in CSSTransition (created by Growl)
...

this is a code sandbox:
https://codesandbox.io/s/vibrant-haze-pxqw6

the error is trigger when the Message/ Growl component change is inside state ...

Thanks

[ckay2003]

Seems to happen in multiple components. I get this message when using a calendar as a custom editor in datatable

[mertsincan]

Hi,

It is a warning, not an error. Also, this issue is related to transition API. Please see; reactjs/react-transition-group#429

Also, facebook/react#9217 (comment)

[mertsincan]

Hi,

Fixed in #1790

Best Regards,