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tests/cases/conformance/types/literal/enumLiteralTypes3.ts(10,5): error TS2322: Type 'YesNo' is not assignable to type 'Choice.Yes'.
Type 'Choice.No' is not assignable to type 'Choice.Yes'.
tests/cases/conformance/types/literal/enumLiteralTypes3.ts(11,5): error TS2322: Type 'UnknownYesNo' is not assignable to type 'Choice.Yes'.
Type 'Choice.Unknown' is not assignable to type 'Choice.Yes'.
tests/cases/conformance/types/literal/enumLiteralTypes3.ts(12,5): error TS2322: Type 'Choice' is not assignable to type 'Choice.Yes'.
tests/cases/conformance/types/literal/enumLiteralTypes3.ts(18,5): error TS2322: Type 'UnknownYesNo' is not assignable to type 'YesNo'.
Type 'Choice.Unknown' is not assignable to type 'YesNo'.
tests/cases/conformance/types/literal/enumLiteralTypes3.ts(19,5): error TS2322: Type 'Choice' is not assignable to type 'YesNo'.
tests/cases/conformance/types/literal/enumLiteralTypes3.ts(37,5): error TS2322: Type 'Choice.Unknown' is not assignable to type 'Choice.Yes'.
tests/cases/conformance/types/literal/enumLiteralTypes3.ts(39,5): error TS2322: Type 'Choice.No' is not assignable to type 'Choice.Yes'.
tests/cases/conformance/types/literal/enumLiteralTypes3.ts(40,5): error TS2322: Type 'Choice.Unknown' is not assignable to type 'YesNo'.
tests/cases/conformance/types/literal/enumLiteralTypes3.ts(52,5): error TS2367: This comparison appears to be unintentional because the types 'Choice.Yes' and 'Choice.Unknown' have no overlap.
tests/cases/conformance/types/literal/enumLiteralTypes3.ts(54,5): error TS2367: This comparison appears to be unintentional because the types 'Choice.Yes' and 'Choice.No' have no overlap.
tests/cases/conformance/types/literal/enumLiteralTypes3.ts(55,5): error TS2367: This comparison appears to be unintentional because the types 'YesNo' and 'Choice.Unknown' have no overlap.
tests/cases/conformance/types/literal/enumLiteralTypes3.ts(87,14): error TS2678: Type 'Choice.Unknown' is not comparable to type 'Choice.Yes'.
tests/cases/conformance/types/literal/enumLiteralTypes3.ts(89,14): error TS2678: Type 'Choice.No' is not comparable to type 'Choice.Yes'.
tests/cases/conformance/types/literal/enumLiteralTypes3.ts(96,14): error TS2678: Type 'Choice.Unknown' is not comparable to type 'YesNo'.
==== tests/cases/conformance/types/literal/enumLiteralTypes3.ts (14 errors) ====
const enum Choice { Unknown, Yes, No };
type Yes = Choice.Yes;
type YesNo = Choice.Yes | Choice.No;
type NoYes = Choice.No | Choice.Yes;
type UnknownYesNo = Choice.Unknown | Choice.Yes | Choice.No;
function f1(a: Yes, b: YesNo, c: UnknownYesNo, d: Choice) {
a = a;
a = b;
~
!!! error TS2322: Type 'YesNo' is not assignable to type 'Choice.Yes'.
!!! error TS2322: Type 'Choice.No' is not assignable to type 'Choice.Yes'.
a = c;
~
!!! error TS2322: Type 'UnknownYesNo' is not assignable to type 'Choice.Yes'.
!!! error TS2322: Type 'Choice.Unknown' is not assignable to type 'Choice.Yes'.
a = d;
~
!!! error TS2322: Type 'Choice' is not assignable to type 'Choice.Yes'.
}
function f2(a: Yes, b: YesNo, c: UnknownYesNo, d: Choice) {
b = a;
b = b;
b = c;
~
!!! error TS2322: Type 'UnknownYesNo' is not assignable to type 'YesNo'.
!!! error TS2322: Type 'Choice.Unknown' is not assignable to type 'YesNo'.
b = d;
~
!!! error TS2322: Type 'Choice' is not assignable to type 'YesNo'.
}
function f3(a: Yes, b: YesNo, c: UnknownYesNo, d: Choice) {
c = a;
c = b;
c = c;
c = d;
}
function f4(a: Yes, b: YesNo, c: UnknownYesNo, d: Choice) {
d = a;
d = b;
d = c;
d = d;
}
function f5(a: Yes, b: YesNo, c: UnknownYesNo, d: Choice) {
a = Choice.Unknown;
~
!!! error TS2322: Type 'Choice.Unknown' is not assignable to type 'Choice.Yes'.
a = Choice.Yes;
a = Choice.No;
~
!!! error TS2322: Type 'Choice.No' is not assignable to type 'Choice.Yes'.
b = Choice.Unknown;
~
!!! error TS2322: Type 'Choice.Unknown' is not assignable to type 'YesNo'.
b = Choice.Yes;
b = Choice.No;
c = Choice.Unknown;
c = Choice.Yes;
c = Choice.No;
d = Choice.Unknown;
d = Choice.Yes;
d = Choice.No;
}
function f6(a: Yes, b: YesNo, c: UnknownYesNo, d: Choice) {
a === Choice.Unknown;
~~~~~~~~~~~~~~~~~~~~
!!! error TS2367: This comparison appears to be unintentional because the types 'Choice.Yes' and 'Choice.Unknown' have no overlap.
a === Choice.Yes;
a === Choice.No;
~~~~~~~~~~~~~~~
!!! error TS2367: This comparison appears to be unintentional because the types 'Choice.Yes' and 'Choice.No' have no overlap.
b === Choice.Unknown;
~~~~~~~~~~~~~~~~~~~~
!!! error TS2367: This comparison appears to be unintentional because the types 'YesNo' and 'Choice.Unknown' have no overlap.
b === Choice.Yes;
b === Choice.No;
c === Choice.Unknown;
c === Choice.Yes;
c === Choice.No;
d === Choice.Unknown;
d === Choice.Yes;
d === Choice.No;
}
function f7(a: Yes, b: YesNo, c: UnknownYesNo, d: Choice) {
a === a;
a === b;
a === c;
a === d;
b === a;
b === b;
b === c;
b === d;
c === a;
c === b;
c === c;
c === d;
d === a;
d === b;
d === c;
d === d;
}
function f10(x: Yes): Yes {
switch (x) {
case Choice.Unknown: return x;
~~~~~~~~~~~~~~
!!! error TS2678: Type 'Choice.Unknown' is not comparable to type 'Choice.Yes'.
case Choice.Yes: return x;
case Choice.No: return x;
~~~~~~~~~
!!! error TS2678: Type 'Choice.No' is not comparable to type 'Choice.Yes'.
}
return x;
}
function f11(x: YesNo): YesNo {
switch (x) {
case Choice.Unknown: return x;
~~~~~~~~~~~~~~
!!! error TS2678: Type 'Choice.Unknown' is not comparable to type 'YesNo'.
case Choice.Yes: return x;
case Choice.No: return x;
}
return x;
}
function f12(x: UnknownYesNo): UnknownYesNo {
switch (x) {
case Choice.Unknown: return x;
case Choice.Yes: return x;
case Choice.No: return x;
}
return x;
}
function f13(x: Choice): Choice {
switch (x) {
case Choice.Unknown: return x;
case Choice.Yes: return x;
case Choice.No: return x;
}
return x;
}
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