/TypeScript/Warning: Can't perform a React state update on an unmounted component. This is a no-op, but it indicates a memory leak in your application. To fix, cancel all subscriptions and asynchronous tasks in a useEffect cleanup function.

Warning: Can't perform a React state update on an unmounted component. This is a no-op, but it indicates a memory leak in your application. To fix, cancel all subscriptions and asynchronous tasks in a useEffect cleanup function.

You can declare let isMounted = true inside useEffect,
which will be changed in the cleanup callback, as soon as the component is unmounted.
Before state updates, you now check this variable conditionally:

useEffect(() => {
  let isMounted = true;               // note mutable flag
  someAsyncOperation().then(data => {
    if (isMounted) setState(data);    // add conditional check
  })
  return () => { isMounted = false }; // cleanup toggles value, if unmounted
}, []);

React warning can't perform a react state update on an unmounted component

componentWillUnmount() {
    // fix Warning: Can't perform a React state update on an unmounted component
    this.setState = (state,callback)=>{
        return;
    };
}

Source: stackoverflow.com

Similar codes

0 vote280 views1 answer
Removing directory and its content bash linux
TypeScript
0 vote242 views1 answer
Styled components on vscode
TypeScript
1 vote251 views1 answer
Error: ./src/main.ts Module build failed (from ./node_modules/@ngtools/webpack/src/ivy/index.js): TypeError: Cannot read property 'createUniqueName' of undefined
TypeScript
0 vote255 views1 answer
Error: postfix operator toArray needs to be enabled
TypeScript
0 vote262 views1 answer
Vue important
TypeScript
1 vote244 views1 answer
How to make a class that takes no arguments in python
TypeScript
0 vote271 views1 answer
How to append different lists in installed apps django
TypeScript
0 vote277 views1 answer
Pyton program acept user first and last name and prints in revese
TypeScript
1 vote268 views1 answer
Git count commits by author
TypeScript
3 votes190 views1 answer
How to remove an entry from a dictionary python
TypeScript