castingTuple.errors.txt

tests/cases/conformance/types/tuple/castingTuple.ts(13,23): error TS2352: Conversion of type '[number, string]' to type '[number, string, boolean]' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
  Property '2' is missing in type '[number, string]' but required in type '[number, string, boolean]'.
tests/cases/conformance/types/tuple/castingTuple.ts(14,15): error TS2352: Conversion of type '[number, string, boolean]' to type '[number, string]' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
  Types of property 'length' are incompatible.
    Type '3' is not comparable to type '2'.
tests/cases/conformance/types/tuple/castingTuple.ts(15,14): error TS2352: Conversion of type '[number, string]' to type '[number, string, boolean]' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
tests/cases/conformance/types/tuple/castingTuple.ts(18,21): error TS2352: Conversion of type '[C, D]' to type '[C, D, A]' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
  Property '2' is missing in type '[C, D]' but required in type '[C, D, A]'.
tests/cases/conformance/types/tuple/castingTuple.ts(20,33): error TS2493: Tuple type '[C, D, A]' of length '3' has no element at index '5'.
tests/cases/conformance/types/tuple/castingTuple.ts(30,10): error TS2352: Conversion of type '[number, string]' to type '[number, number]' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
  Type 'string' is not comparable to type 'number'.
tests/cases/conformance/types/tuple/castingTuple.ts(31,10): error TS2352: Conversion of type '[C, D]' to type '[A, I]' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
  Property 'a' is missing in type 'C' but required in type 'A'.
tests/cases/conformance/types/tuple/castingTuple.ts(32,5): error TS2403: Subsequent variable declarations must have the same type.  Variable 'array1' must be of type '{}[]', but here has type 'number[]'.
tests/cases/conformance/types/tuple/castingTuple.ts(33,1): error TS2304: Cannot find name 't4'.


==== tests/cases/conformance/types/tuple/castingTuple.ts (9 errors) ====
    interface I { }
    class A { a = 10; }
    class C implements I { c };
    class D implements I { d };
    class E extends A { e };
    class F extends A { f };
    enum E1 { one }
    enum E2 { one }
    
    // no error
    var numStrTuple: [number, string] = [5, "foo"];
    var emptyObjTuple = <[{}, {}]>numStrTuple;
    var numStrBoolTuple = <[number, string, boolean]>numStrTuple;
                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2352: Conversion of type '[number, string]' to type '[number, string, boolean]' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
!!! error TS2352:   Property '2' is missing in type '[number, string]' but required in type '[number, string, boolean]'.
    var shorter = numStrBoolTuple as [number, string]
                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2352: Conversion of type '[number, string, boolean]' to type '[number, string]' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
!!! error TS2352:   Types of property 'length' are incompatible.
!!! error TS2352:     Type '3' is not comparable to type '2'.
    var longer = numStrTuple as [number, string, boolean]
                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2352: Conversion of type '[number, string]' to type '[number, string, boolean]' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
    var classCDTuple: [C, D] = [new C(), new D()];
    var interfaceIITuple = <[I, I]>classCDTuple;
    var classCDATuple = <[C, D, A]>classCDTuple;
                        ~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2352: Conversion of type '[C, D]' to type '[C, D, A]' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
!!! error TS2352:   Property '2' is missing in type '[C, D]' but required in type '[C, D, A]'.
    var eleFromCDA1 = classCDATuple[2]; // A
    var eleFromCDA2 = classCDATuple[5]; // C | D | A
                                    ~
!!! error TS2493: Tuple type '[C, D, A]' of length '3' has no element at index '5'.
    var t10: [E1, E2] = [E1.one, E2.one];
    var t11 = <[number, number]>t10;
    var array1 = <{}[]>emptyObjTuple;
    var unionTuple: [C, string | number] = [new C(), "foo"];
    var unionTuple2: [C, string | number, D] = [new C(), "foo", new D()];
    var unionTuple3: [number, string| number] = [10, "foo"]; 
    var unionTuple4 = <[number, number]>unionTuple3; 
    
    // error
    var t3 = <[number, number]>numStrTuple;
             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
!!! error TS2352: Conversion of type '[number, string]' to type '[number, number]' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
!!! error TS2352:   Type 'string' is not comparable to type 'number'.
    var t9 = <[A, I]>classCDTuple;
             ~~~~~~~~~~~~~~~~~~~~
!!! error TS2352: Conversion of type '[C, D]' to type '[A, I]' may be a mistake because neither type sufficiently overlaps with the other. If this was intentional, convert the expression to 'unknown' first.
!!! error TS2352:   Property 'a' is missing in type 'C' but required in type 'A'.
!!! related TS2728 tests/cases/conformance/types/tuple/castingTuple.ts:2:11: 'a' is declared here.
    var array1 = <number[]>numStrTuple;
        ~~~~~~
!!! error TS2403: Subsequent variable declarations must have the same type.  Variable 'array1' must be of type '{}[]', but here has type 'number[]'.
!!! related TS6203 tests/cases/conformance/types/tuple/castingTuple.ts:23:5: 'array1' was also declared here.
    t4[2] = 10;
    ~~
!!! error TS2304: Cannot find name 't4'.