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tests/cases/compiler/typeParameterDiamond4.ts(8,13): error TS2322: Type 'Top | T | U' is not assignable to type 'Top'.
'Top' could be instantiated with an arbitrary type which could be unrelated to 'Top | T | U'.
tests/cases/compiler/typeParameterDiamond4.ts(10,13): error TS2322: Type 'Bottom' is not assignable to type 'Top'.
'Top' could be instantiated with an arbitrary type which could be unrelated to 'Bottom'.
==== tests/cases/compiler/typeParameterDiamond4.ts (2 errors) ====
function diamondTop<Top>() {
function diamondMiddle<T, U>() {
function diamondBottom<Bottom extends Top | T | U>() {
var top: Top;
var middle: Top | T | U;
var bottom: Bottom;
top = middle;
~~~
!!! error TS2322: Type 'Top | T | U' is not assignable to type 'Top'.
!!! error TS2322: 'Top' could be instantiated with an arbitrary type which could be unrelated to 'Top | T | U'.
!!! related TS2208 tests/cases/compiler/typeParameterDiamond4.ts:2:28: This type parameter might need an `extends Top` constraint.
middle = bottom;
top = bottom;
~~~
!!! error TS2322: Type 'Bottom' is not assignable to type 'Top'.
!!! error TS2322: 'Top' could be instantiated with an arbitrary type which could be unrelated to 'Bottom'.
}
}
}
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