/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

1 vote215 views1 answer
Typescript override interface property
TypeScript
7 votes224 views1 answer
Typerscript online compiler
TypeScript
0 vote169 views1 answer
Keep footer after all elements react
TypeScript
0 vote156 views1 answer
Wordpress posts sidebar with category link programmatically
TypeScript
1 vote170 views1 answer
How to move data between request
TypeScript
19 votes182 views3 answers
Set default route angular
TypeScript
3 votes161 views1 answer
Dart check if string is contained in list of strings
TypeScript
25 votes233 views4 answers
Filter typescript
TypeScript
22 votes168 views5 answers
How to combine 2 lists in python
TypeScript
0 vote226 views1 answer
Requests to check is url exists in python using function
TypeScript