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=== tests/cases/conformance/types/never/neverType.ts ===
function error(message: string): never {
>error : Symbol(error, Decl(neverType.ts, 0, 0))
>message : Symbol(message, Decl(neverType.ts, 0, 15))
throw new Error(message);
>Error : Symbol(Error, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>message : Symbol(message, Decl(neverType.ts, 0, 15))
}
function errorVoid(message: string) {
>errorVoid : Symbol(errorVoid, Decl(neverType.ts, 2, 1))
>message : Symbol(message, Decl(neverType.ts, 4, 19))
throw new Error(message);
>Error : Symbol(Error, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>message : Symbol(message, Decl(neverType.ts, 4, 19))
}
function fail() {
>fail : Symbol(fail, Decl(neverType.ts, 6, 1))
return error("Something failed");
>error : Symbol(error, Decl(neverType.ts, 0, 0))
}
function failOrThrow(shouldFail: boolean) {
>failOrThrow : Symbol(failOrThrow, Decl(neverType.ts, 10, 1))
>shouldFail : Symbol(shouldFail, Decl(neverType.ts, 12, 21))
if (shouldFail) {
>shouldFail : Symbol(shouldFail, Decl(neverType.ts, 12, 21))
return fail();
>fail : Symbol(fail, Decl(neverType.ts, 6, 1))
}
throw new Error();
>Error : Symbol(Error, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
}
function infiniteLoop1() {
>infiniteLoop1 : Symbol(infiniteLoop1, Decl(neverType.ts, 17, 1))
while (true) {
}
}
function infiniteLoop2(): never {
>infiniteLoop2 : Symbol(infiniteLoop2, Decl(neverType.ts, 22, 1))
while (true) {
}
}
function move1(direction: "up" | "down") {
>move1 : Symbol(move1, Decl(neverType.ts, 27, 1))
>direction : Symbol(direction, Decl(neverType.ts, 29, 15))
switch (direction) {
>direction : Symbol(direction, Decl(neverType.ts, 29, 15))
case "up":
return 1;
case "down":
return -1;
}
return error("Should never get here");
>error : Symbol(error, Decl(neverType.ts, 0, 0))
}
function move2(direction: "up" | "down") {
>move2 : Symbol(move2, Decl(neverType.ts, 37, 1))
>direction : Symbol(direction, Decl(neverType.ts, 39, 15))
return direction === "up" ? 1 :
>direction : Symbol(direction, Decl(neverType.ts, 39, 15))
direction === "down" ? -1 :
>direction : Symbol(direction, Decl(neverType.ts, 39, 15))
error("Should never get here");
>error : Symbol(error, Decl(neverType.ts, 0, 0))
}
function check<T>(x: T | undefined) {
>check : Symbol(check, Decl(neverType.ts, 43, 1))
>T : Symbol(T, Decl(neverType.ts, 45, 15))
>x : Symbol(x, Decl(neverType.ts, 45, 18))
>T : Symbol(T, Decl(neverType.ts, 45, 15))
return x || error("Undefined value");
>x : Symbol(x, Decl(neverType.ts, 45, 18))
>error : Symbol(error, Decl(neverType.ts, 0, 0))
}
class C {
>C : Symbol(C, Decl(neverType.ts, 47, 1))
void1() {
>void1 : Symbol(C.void1, Decl(neverType.ts, 49, 9))
throw new Error();
>Error : Symbol(Error, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
}
void2() {
>void2 : Symbol(C.void2, Decl(neverType.ts, 52, 5))
while (true) {}
}
never1(): never {
>never1 : Symbol(C.never1, Decl(neverType.ts, 55, 5))
throw new Error();
>Error : Symbol(Error, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
}
never2(): never {
>never2 : Symbol(C.never2, Decl(neverType.ts, 58, 5))
while (true) {}
}
}
function f1(x: string | number) {
>f1 : Symbol(f1, Decl(neverType.ts, 62, 1))
>x : Symbol(x, Decl(neverType.ts, 64, 12))
if (typeof x === "boolean") {
>x : Symbol(x, Decl(neverType.ts, 64, 12))
x; // never
>x : Symbol(x, Decl(neverType.ts, 64, 12))
}
}
function f2(x: string | number) {
>f2 : Symbol(f2, Decl(neverType.ts, 68, 1))
>x : Symbol(x, Decl(neverType.ts, 70, 12))
while (true) {
if (typeof x === "boolean") {
>x : Symbol(x, Decl(neverType.ts, 70, 12))
return x; // never
>x : Symbol(x, Decl(neverType.ts, 70, 12))
}
}
}
function test(cb: () => string) {
>test : Symbol(test, Decl(neverType.ts, 76, 1))
>cb : Symbol(cb, Decl(neverType.ts, 78, 14))
let s = cb();
>s : Symbol(s, Decl(neverType.ts, 79, 7))
>cb : Symbol(cb, Decl(neverType.ts, 78, 14))
return s;
>s : Symbol(s, Decl(neverType.ts, 79, 7))
}
let errorCallback = () => error("Error callback");
>errorCallback : Symbol(errorCallback, Decl(neverType.ts, 83, 3))
>error : Symbol(error, Decl(neverType.ts, 0, 0))
test(() => "hello");
>test : Symbol(test, Decl(neverType.ts, 76, 1))
test(() => fail());
>test : Symbol(test, Decl(neverType.ts, 76, 1))
>fail : Symbol(fail, Decl(neverType.ts, 6, 1))
test(() => { throw new Error(); })
>test : Symbol(test, Decl(neverType.ts, 76, 1))
>Error : Symbol(Error, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
test(errorCallback);
>test : Symbol(test, Decl(neverType.ts, 76, 1))
>errorCallback : Symbol(errorCallback, Decl(neverType.ts, 83, 3))
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