score:1
dispatch
should not change, it's the dispatch function provided from the redux store. the react hook linter just sees it as a function, however, and is warning you it can be mutated. i think you've a syntax error though, missing parens. i think it should be
useeffect(() => () => dispatch(setvalue()), []);
you can ignore the rule for that line though, if necessary
// eslint-disable-next-line react-hooks/exhaustive-deps
usage
// eslint-disable-next-line react-hooks/exhaustive-deps
useeffect(() => () => dispatch(setvalue()), []);
or (imo a bit easier to read)
useeffect(() => {
return () => dispatch(setvalue());
// eslint-disable-next-line react-hooks/exhaustive-deps
}, []);
Source: stackoverflow.com
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