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//// [literalTypes3.ts]
function f1(s: string) {
if (s === "foo") {
s; // "foo"
}
if (s === "foo" || s === "bar") {
s; // "foo" | "bar"
}
}
function f2(s: string) {
switch (s) {
case "foo":
case "bar":
s; // "foo" | "bar"
case "baz":
s; // "foo" | "bar" | "baz"
break;
default:
s; // string
}
}
function f3(s: string) {
return s === "foo" || s === "bar" ? s : undefined; // "foo" | "bar" | undefined
}
function f4(x: number) {
if (x === 1 || x === 2) {
return x; // 1 | 2
}
throw new Error();
}
function f5(x: number, y: 1 | 2) {
if (x === 0 || x === y) {
x; // 0 | 1 | 2
}
}
function f6(x: number, y: 1 | 2) {
if (y === x || 0 === x) {
x; // 0 | 1 | 2
}
}
function f7(x: number | "foo" | "bar", y: 1 | 2 | string) {
if (x === y) {
x; // "foo" | "bar" | 1 | 2
}
}
function f8(x: number | "foo" | "bar") {
switch (x) {
case 1:
case 2:
x; // 1 | 2
break;
case "foo":
x; // "foo"
break;
default:
x; // number | "bar"
}
}
//// [literalTypes3.js]
function f1(s) {
if (s === "foo") {
s; // "foo"
}
if (s === "foo" || s === "bar") {
s; // "foo" | "bar"
}
}
function f2(s) {
switch (s) {
case "foo":
case "bar":
s; // "foo" | "bar"
case "baz":
s; // "foo" | "bar" | "baz"
break;
default:
s; // string
}
}
function f3(s) {
return s === "foo" || s === "bar" ? s : undefined; // "foo" | "bar" | undefined
}
function f4(x) {
if (x === 1 || x === 2) {
return x; // 1 | 2
}
throw new Error();
}
function f5(x, y) {
if (x === 0 || x === y) {
x; // 0 | 1 | 2
}
}
function f6(x, y) {
if (y === x || 0 === x) {
x; // 0 | 1 | 2
}
}
function f7(x, y) {
if (x === y) {
x; // "foo" | "bar" | 1 | 2
}
}
function f8(x) {
switch (x) {
case 1:
case 2:
x; // 1 | 2
break;
case "foo":
x; // "foo"
break;
default:
x; // number | "bar"
}
}
|
