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11
Votes

React Strict Mode is not working

The @syncfusion/ej2-react-buttons (v18.1.52) CheckBoxComponent throws errors when React strict mode is enabled. Warning: Using UNSAFE_componentWillMount in strict mode is not recommended and may indicate bugs in your code. See https://fb.me/react-unsafe-component-lifecycles for details. - Move code with side effects to componentDidMount, and set initial state in the constructor. Please update the following components: CheckBoxComponent Warning: Using UNSAFE_componentWillReceiveProps in strict mode is not recommended and may indicate bugs in your code. See https://fb.me/react-unsafe-component-lifecycles for details. - Move data fetching code or side effects to componentDidUpdate. - If you're updating state whenever props change, refactor your code to use memoization techniques or move it to static getDerivedStateFromProps. Learn more at: https://fb.me/react-derived-state Please update the following components: CheckBoxComponent Warning: findDOMNode is deprecated in StrictMode. findDOMNode was passed an instance of CheckBoxComponent 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