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Why can not TypeScript automatically detect a generic type in function?

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    gorand
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    Sample code:

    
    type TestFn<T> = (v:T, k:string) => void;
    function runTest<T, TT extends {[key:string]:T}>(p_obj:TT, pp:TestFn<T>) { }
    var Map:{[key:string]:string[]} = {};
    runTest(Map, function(v, k) {});
    

    This code parameter v is {} but should be string[] like java does
    see attached images

    • This topic was modified 7 years, 1 month ago by gorand. Reason: add image
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