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.

[youjia727]

react18.3.1 indicates that findDOMNode is deprecated

[arudenkoofficial]

@youjia727 Seems that you didn't pass nodeRef prop, referencing DOM element needs to transition. Check it out on the documentation –nodeRef

[pzm666]

According to the React documentation, findDOMNode is about to be deprecated and removed, and needs to be replaced with a ref to read the component's own DOM node

[sscaff1]

Is there a PR up for this yet? It seems react-transition-group doesn't work with v19 beta.

[turnflowerdown]

you can use nodeRef prop

[wp993080086]

v4.4.0中已修复：

import React from "react"
import { CSSTransition } from "react-transition-group"

const MyComponent = () => {
  const nodeRef = React.useRef(null)
  return (
    <CSSTransition nodeRef={nodeRef} in timeout={200} classNames="fade">
      <div ref={nodeRef}>Fade</div>
    </CSSTransition>
  )
}