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typescript 类型问题

image.png

如图所示,为什么会报错呢?正确写法应该是什么样呢。


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type Obj = {a?:string,b?:number,c?:boolean};
function setValue<T extends keyof Obj>(obj:Obj,value:{k:T,v:Obj[T]}){
    let {k,v}=value;
    if(v){
        obj[k]=v;
    }
}

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