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RULE RECOMMENDATION: common useRef.current mistake warning (w/ example) #3921

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@max-woolf

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@max-woolf

React Documentation:https://react.dev/reference/react/useRef

WRONG example:

exportfunctionMyComponent(){constmyRef=useRef(false);constmyFunction=()=>{myRef.current=true;// FAILS!if(myRef){// do important thing}}}

The user should get warned that he is calling useRef improperly in that situation, instead it should be:

RIGHT example:

exportfunctionMyComponent(){constmyRef=useRef(false);constmyFunction=()=>{myRef.current=true;// WORKS!if(myRef.current){// do important thing}}}

I think this is an easy mistake to make, one more important and likely than, for example, "no-unused-vars." And one very easy to lint.

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