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=== tests/cases/conformance/types/stringLiteral/stringLiteralCheckedInIf01.ts ===
type S = "a" | "b";
>S : S
type T = S[] | S;
>T : T
>S : S
>S : S
function f(foo: T) {
>f : (foo: T) => S
>foo : T
>T : T
if (foo === "a") {
>foo === "a" : boolean
>foo : T
>"a" : "a"
return foo;
>foo : "a"
}
else if (foo === "b") {
>foo === "b" : boolean
>foo : "b" | S[]
>"b" : "b"
return foo;
>foo : "b"
}
else {
return (foo as S[])[0];
>(foo as S[])[0] : S
>(foo as S[]) : S[]
>foo as S[] : S[]
>foo : S[]
>S : S
>0 : 0
}
}
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