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Add tests

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This commit is contained in:
Anders Hejlsberg 2018-12-10 16:30:30 -08:00
parent 9479353d5c
commit 45411e525c
1 changed files with 22 additions and 0 deletions
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22
tests/cases/conformance/types/union/discriminatedUnionTypes2.ts
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@ -72,3 +72,25 @@ function f20<Data>(carrier: DataCarrier<Data>) {
const data: null = carrier.data
}
}
// Repro from #28935
type Foo = { tag: true, x: number } | { tag: false, y: number } | { [x: string]: string };
function f30(foo: Foo) {
if (foo.tag) {
foo;
}
else {
foo;
}
}
function f31(foo: Foo) {
if (foo.tag === true) {
foo;
}
else {
foo;
}
}