2016-05-17 22:46:07 +02:00
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=== tests/cases/conformance/types/never/neverType.ts ===
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2016-05-23 22:08:15 +02:00
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function error(message: string): never {
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2016-05-17 22:46:07 +02:00
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>error : Symbol(error, Decl(neverType.ts, 0, 0))
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2016-05-23 22:08:15 +02:00
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>message : Symbol(message, Decl(neverType.ts, 2, 15))
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throw new Error(message);
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>Error : Symbol(Error, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
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>message : Symbol(message, Decl(neverType.ts, 2, 15))
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}
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function errorVoid(message: string) {
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>errorVoid : Symbol(errorVoid, Decl(neverType.ts, 4, 1))
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>message : Symbol(message, Decl(neverType.ts, 6, 19))
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2016-05-17 22:46:07 +02:00
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throw new Error(message);
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>Error : Symbol(Error, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
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2016-05-23 22:08:15 +02:00
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>message : Symbol(message, Decl(neverType.ts, 6, 19))
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2016-05-17 22:46:07 +02:00
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}
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function fail() {
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2016-05-23 22:08:15 +02:00
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>fail : Symbol(fail, Decl(neverType.ts, 8, 1))
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2016-05-17 22:46:07 +02:00
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return error("Something failed");
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>error : Symbol(error, Decl(neverType.ts, 0, 0))
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}
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2016-05-23 22:08:15 +02:00
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function failOrThrow(shouldFail: boolean) {
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>failOrThrow : Symbol(failOrThrow, Decl(neverType.ts, 12, 1))
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>shouldFail : Symbol(shouldFail, Decl(neverType.ts, 14, 21))
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if (shouldFail) {
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>shouldFail : Symbol(shouldFail, Decl(neverType.ts, 14, 21))
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return fail();
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>fail : Symbol(fail, Decl(neverType.ts, 8, 1))
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}
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throw new Error();
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>Error : Symbol(Error, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
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}
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function infiniteLoop1() {
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>infiniteLoop1 : Symbol(infiniteLoop1, Decl(neverType.ts, 19, 1))
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while (true) {
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}
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}
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function infiniteLoop2(): never {
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>infiniteLoop2 : Symbol(infiniteLoop2, Decl(neverType.ts, 24, 1))
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2016-05-17 22:46:07 +02:00
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while (true) {
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}
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}
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function move1(direction: "up" | "down") {
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2016-05-23 22:08:15 +02:00
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>move1 : Symbol(move1, Decl(neverType.ts, 29, 1))
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>direction : Symbol(direction, Decl(neverType.ts, 31, 15))
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2016-05-17 22:46:07 +02:00
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switch (direction) {
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2016-05-23 22:08:15 +02:00
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>direction : Symbol(direction, Decl(neverType.ts, 31, 15))
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2016-05-17 22:46:07 +02:00
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case "up":
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return 1;
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case "down":
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return -1;
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}
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return error("Should never get here");
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>error : Symbol(error, Decl(neverType.ts, 0, 0))
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}
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function move2(direction: "up" | "down") {
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2016-05-23 22:08:15 +02:00
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>move2 : Symbol(move2, Decl(neverType.ts, 39, 1))
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>direction : Symbol(direction, Decl(neverType.ts, 41, 15))
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2016-05-17 22:46:07 +02:00
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return direction === "up" ? 1 :
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2016-05-23 22:08:15 +02:00
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>direction : Symbol(direction, Decl(neverType.ts, 41, 15))
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2016-05-17 22:46:07 +02:00
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direction === "down" ? -1 :
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2016-05-23 22:08:15 +02:00
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>direction : Symbol(direction, Decl(neverType.ts, 41, 15))
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2016-05-17 22:46:07 +02:00
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error("Should never get here");
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>error : Symbol(error, Decl(neverType.ts, 0, 0))
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}
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function check<T>(x: T | undefined) {
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2016-05-23 22:08:15 +02:00
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>check : Symbol(check, Decl(neverType.ts, 45, 1))
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>T : Symbol(T, Decl(neverType.ts, 47, 15))
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>x : Symbol(x, Decl(neverType.ts, 47, 18))
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>T : Symbol(T, Decl(neverType.ts, 47, 15))
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2016-05-17 22:46:07 +02:00
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return x || error("Undefined value");
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2016-05-23 22:08:15 +02:00
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>x : Symbol(x, Decl(neverType.ts, 47, 18))
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2016-05-17 22:46:07 +02:00
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>error : Symbol(error, Decl(neverType.ts, 0, 0))
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}
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2016-05-23 22:08:15 +02:00
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class C {
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>C : Symbol(C, Decl(neverType.ts, 49, 1))
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void1() {
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>void1 : Symbol(C.void1, Decl(neverType.ts, 51, 9))
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throw new Error();
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>Error : Symbol(Error, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
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}
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void2() {
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>void2 : Symbol(C.void2, Decl(neverType.ts, 54, 5))
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while (true) {}
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}
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never1(): never {
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>never1 : Symbol(C.never1, Decl(neverType.ts, 57, 5))
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throw new Error();
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>Error : Symbol(Error, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
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}
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never2(): never {
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>never2 : Symbol(C.never2, Decl(neverType.ts, 60, 5))
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while (true) {}
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}
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}
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2016-05-17 22:46:07 +02:00
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function f1(x: string | number) {
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2016-05-23 22:08:15 +02:00
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>f1 : Symbol(f1, Decl(neverType.ts, 64, 1))
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>x : Symbol(x, Decl(neverType.ts, 66, 12))
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2016-05-17 22:46:07 +02:00
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if (typeof x === "boolean") {
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2016-05-23 22:08:15 +02:00
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>x : Symbol(x, Decl(neverType.ts, 66, 12))
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2016-05-17 22:46:07 +02:00
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x; // never
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2016-05-23 22:08:15 +02:00
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>x : Symbol(x, Decl(neverType.ts, 66, 12))
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2016-05-17 22:46:07 +02:00
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}
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}
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function f2(x: string | number) {
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2016-05-23 22:08:15 +02:00
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>f2 : Symbol(f2, Decl(neverType.ts, 70, 1))
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>x : Symbol(x, Decl(neverType.ts, 72, 12))
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2016-05-17 22:46:07 +02:00
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while (true) {
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if (typeof x === "boolean") {
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2016-05-23 22:08:15 +02:00
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>x : Symbol(x, Decl(neverType.ts, 72, 12))
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2016-05-17 22:46:07 +02:00
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return x; // never
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2016-05-23 22:08:15 +02:00
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>x : Symbol(x, Decl(neverType.ts, 72, 12))
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2016-05-17 22:46:07 +02:00
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}
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}
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}
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function test(cb: () => string) {
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2016-05-23 22:08:15 +02:00
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>test : Symbol(test, Decl(neverType.ts, 78, 1))
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>cb : Symbol(cb, Decl(neverType.ts, 80, 14))
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2016-05-17 22:46:07 +02:00
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let s = cb();
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2016-05-23 22:08:15 +02:00
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>s : Symbol(s, Decl(neverType.ts, 81, 7))
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>cb : Symbol(cb, Decl(neverType.ts, 80, 14))
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2016-05-17 22:46:07 +02:00
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return s;
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2016-05-23 22:08:15 +02:00
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>s : Symbol(s, Decl(neverType.ts, 81, 7))
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2016-05-17 22:46:07 +02:00
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}
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let errorCallback = () => error("Error callback");
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2016-05-23 22:08:15 +02:00
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>errorCallback : Symbol(errorCallback, Decl(neverType.ts, 85, 3))
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2016-05-17 22:46:07 +02:00
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>error : Symbol(error, Decl(neverType.ts, 0, 0))
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test(() => "hello");
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2016-05-23 22:08:15 +02:00
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>test : Symbol(test, Decl(neverType.ts, 78, 1))
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2016-05-17 22:46:07 +02:00
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test(() => fail());
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2016-05-23 22:08:15 +02:00
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>test : Symbol(test, Decl(neverType.ts, 78, 1))
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>fail : Symbol(fail, Decl(neverType.ts, 8, 1))
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2016-05-17 22:46:07 +02:00
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test(() => { throw new Error(); })
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2016-05-23 22:08:15 +02:00
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>test : Symbol(test, Decl(neverType.ts, 78, 1))
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2016-05-17 22:46:07 +02:00
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>Error : Symbol(Error, Decl(lib.d.ts, --, --), Decl(lib.d.ts, --, --))
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test(errorCallback);
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2016-05-23 22:08:15 +02:00
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>test : Symbol(test, Decl(neverType.ts, 78, 1))
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>errorCallback : Symbol(errorCallback, Decl(neverType.ts, 85, 3))
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2016-05-17 22:46:07 +02:00
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