Why is isMounted() an anti-pattern and what is the proper solution?

  • It can lead to race conditions and bugs
  • It causes performance issues
  • It is not needed in modern versions of React
  • It is not supported in React v16
The "isMounted" method in React is considered an anti-pattern because it can lead to race conditions and bugs. This method checks if the component is mounted to the DOM, but it can return a false positive if it is called during the unmounting phase. The proper solution is to use the "componentDidMount" and "componentWillUnmount" lifecycle methods to manage component state and cleanup.
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