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=== tests/cases/compiler/exhaustiveSwitchCheckCircularity.ts ===
// Repro from #47539
declare function isNever(n: never): boolean;
>isNever : (n: never) => boolean
>n : never
function f() {
>f : () => void
let foo: "aaa" | "bbb" = "aaa";
>foo : "aaa" | "bbb"
>"aaa" : "aaa"
while (true) {
>true : true
switch (foo) {
>foo : "aaa" | "bbb"
case "aaa":
>"aaa" : "aaa"
}
if (foo === "aaa") {
>foo === "aaa" : boolean
>foo : "aaa" | "bbb"
>"aaa" : "aaa"
foo = "bbb";
>foo = "bbb" : "bbb"
>foo : "aaa" | "bbb"
>"bbb" : "bbb"
}
else if (isNever(foo)) { // Error expected
>isNever(foo) : boolean
>isNever : (n: never) => boolean
>foo : "bbb"
break;
}
}
}
// Repro from #51688
declare function functionB(key: string): string;
>functionB : (key: string) => string
>key : string
function functionC(): void {
>functionC : () => void
let unionVal: "A" | "B" = "A";
>unionVal : "A" | "B"
>"A" : "A"
while (true) {
>true : true
let key: string;
>key : string
switch (unionVal) {
>unionVal : "A"
case "A": {
>"A" : "A"
key = "AA";
>key = "AA" : "AA"
>key : string
>"AA" : "AA"
break;
}
}
functionB(key);
>functionB(key) : string
>functionB : (key: string) => string
>key : string
}
}
|
