tests/cases/compiler/indexIntoArraySubclass.ts(4,1): error TS2322: Type 'number' is not assignable to type 'string'.


==== tests/cases/compiler/indexIntoArraySubclass.ts (1 errors) ====
    interface Foo2<T> extends Array<T> { }
    var x2: Foo2<string>;
    var r = x2[0]; // string
    r = 0; //error
    ~
!!! error TS2322: Type 'number' is not assignable to type 'string'.