tests/cases/conformance/types/typeRelationships/typeInference/indexSignatureTypeInference.ts(18,27): error TS2345: Argument of type 'NumberMap<Function>' is not assignable to parameter of type 'StringMap<{}>'.
  Index signature is missing in type 'NumberMap<Function>'.


==== tests/cases/conformance/types/typeRelationships/typeInference/indexSignatureTypeInference.ts (1 errors) ====
    interface NumberMap<T> {
        [index: number]: T;
    }
    
    interface StringMap<T> {
        [index: string]: T;
    }
    
    declare function numberMapToArray<T>(object: NumberMap<T>): T[];
    declare function stringMapToArray<T>(object: StringMap<T>): T[];
    
    var numberMap: NumberMap<Function>;
    var stringMap: StringMap<Function>;
    
    var v1: Function[];
    var v1 = numberMapToArray(numberMap);  // Ok
    var v1 = numberMapToArray(stringMap);  // Ok
    var v1 = stringMapToArray(numberMap);  // Error expected here
                              ~~~~~~~~~
!!! error TS2345: Argument of type 'NumberMap<Function>' is not assignable to parameter of type 'StringMap<{}>'.
!!! error TS2345:   Index signature is missing in type 'NumberMap<Function>'.
    var v1 = stringMapToArray(stringMap);  // Ok