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=== tests/cases/conformance/types/union/unionTypeReduction2.ts ===
function f1(x: { f(): void }, y: { f(x?: string): void }) {
>f1 : Symbol(f1, Decl(unionTypeReduction2.ts, 0, 0))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 0, 12))
>f : Symbol(f, Decl(unionTypeReduction2.ts, 0, 16))
>y : Symbol(y, Decl(unionTypeReduction2.ts, 0, 29))
>f : Symbol(f, Decl(unionTypeReduction2.ts, 0, 34))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 0, 37))
let z = !!true ? x : y; // { f(x?: string): void }
>z : Symbol(z, Decl(unionTypeReduction2.ts, 1, 7))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 0, 12))
>y : Symbol(y, Decl(unionTypeReduction2.ts, 0, 29))
z.f();
>z.f : Symbol(f, Decl(unionTypeReduction2.ts, 0, 34))
>z : Symbol(z, Decl(unionTypeReduction2.ts, 1, 7))
>f : Symbol(f, Decl(unionTypeReduction2.ts, 0, 34))
z.f('hello');
>z.f : Symbol(f, Decl(unionTypeReduction2.ts, 0, 34))
>z : Symbol(z, Decl(unionTypeReduction2.ts, 1, 7))
>f : Symbol(f, Decl(unionTypeReduction2.ts, 0, 34))
}
function f2(x: { f(x: string | undefined): void }, y: { f(x?: string): void }) {
>f2 : Symbol(f2, Decl(unionTypeReduction2.ts, 4, 1))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 6, 12))
>f : Symbol(f, Decl(unionTypeReduction2.ts, 6, 16))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 6, 19))
>y : Symbol(y, Decl(unionTypeReduction2.ts, 6, 50))
>f : Symbol(f, Decl(unionTypeReduction2.ts, 6, 55))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 6, 58))
let z = !!true ? x : y; // { f(x?: string): void }
>z : Symbol(z, Decl(unionTypeReduction2.ts, 7, 7))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 6, 12))
>y : Symbol(y, Decl(unionTypeReduction2.ts, 6, 50))
z.f();
>z.f : Symbol(f, Decl(unionTypeReduction2.ts, 6, 55))
>z : Symbol(z, Decl(unionTypeReduction2.ts, 7, 7))
>f : Symbol(f, Decl(unionTypeReduction2.ts, 6, 55))
z.f('hello');
>z.f : Symbol(f, Decl(unionTypeReduction2.ts, 6, 55))
>z : Symbol(z, Decl(unionTypeReduction2.ts, 7, 7))
>f : Symbol(f, Decl(unionTypeReduction2.ts, 6, 55))
}
function f3(x: () => void, y: (x?: string) => void) {
>f3 : Symbol(f3, Decl(unionTypeReduction2.ts, 10, 1))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 12, 12))
>y : Symbol(y, Decl(unionTypeReduction2.ts, 12, 26))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 12, 31))
let f = !!true ? x : y; // (x?: string) => void
>f : Symbol(f, Decl(unionTypeReduction2.ts, 13, 7))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 12, 12))
>y : Symbol(y, Decl(unionTypeReduction2.ts, 12, 26))
f();
>f : Symbol(f, Decl(unionTypeReduction2.ts, 13, 7))
f('hello');
>f : Symbol(f, Decl(unionTypeReduction2.ts, 13, 7))
}
function f4(x: (x: string | undefined) => void, y: (x?: string) => void) {
>f4 : Symbol(f4, Decl(unionTypeReduction2.ts, 16, 1))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 18, 12))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 18, 16))
>y : Symbol(y, Decl(unionTypeReduction2.ts, 18, 47))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 18, 52))
let f = !!true ? x : y; // (x?: string) => void
>f : Symbol(f, Decl(unionTypeReduction2.ts, 19, 7))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 18, 12))
>y : Symbol(y, Decl(unionTypeReduction2.ts, 18, 47))
f();
>f : Symbol(f, Decl(unionTypeReduction2.ts, 19, 7))
f('hello');
>f : Symbol(f, Decl(unionTypeReduction2.ts, 19, 7))
}
function f5(x: (x: string | undefined) => void, y: (x?: 'hello') => void) {
>f5 : Symbol(f5, Decl(unionTypeReduction2.ts, 22, 1))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 24, 12))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 24, 16))
>y : Symbol(y, Decl(unionTypeReduction2.ts, 24, 47))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 24, 52))
let f = !!true ? x : y; // (x?: 'hello') => void
>f : Symbol(f, Decl(unionTypeReduction2.ts, 25, 7))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 24, 12))
>y : Symbol(y, Decl(unionTypeReduction2.ts, 24, 47))
f();
>f : Symbol(f, Decl(unionTypeReduction2.ts, 25, 7))
f('hello');
>f : Symbol(f, Decl(unionTypeReduction2.ts, 25, 7))
}
function f6(x: (x: 'hello' | undefined) => void, y: (x?: string) => void) {
>f6 : Symbol(f6, Decl(unionTypeReduction2.ts, 28, 1))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 30, 12))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 30, 16))
>y : Symbol(y, Decl(unionTypeReduction2.ts, 30, 48))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 30, 53))
let f = !!true ? x : y; // (x: 'hello' | undefined) => void
>f : Symbol(f, Decl(unionTypeReduction2.ts, 31, 7))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 30, 12))
>y : Symbol(y, Decl(unionTypeReduction2.ts, 30, 48))
f(); // Error
>f : Symbol(f, Decl(unionTypeReduction2.ts, 31, 7))
f('hello');
>f : Symbol(f, Decl(unionTypeReduction2.ts, 31, 7))
}
type A = {
>A : Symbol(A, Decl(unionTypeReduction2.ts, 34, 1))
f(): void;
>f : Symbol(f, Decl(unionTypeReduction2.ts, 36, 10))
}
type B = {
>B : Symbol(B, Decl(unionTypeReduction2.ts, 38, 1))
f(x?: string): void;
>f : Symbol(f, Decl(unionTypeReduction2.ts, 40, 10))
>x : Symbol(x, Decl(unionTypeReduction2.ts, 41, 6))
g(): void;
>g : Symbol(g, Decl(unionTypeReduction2.ts, 41, 24))
}
function f11(a: A, b: B) {
>f11 : Symbol(f11, Decl(unionTypeReduction2.ts, 43, 1))
>a : Symbol(a, Decl(unionTypeReduction2.ts, 45, 13))
>A : Symbol(A, Decl(unionTypeReduction2.ts, 34, 1))
>b : Symbol(b, Decl(unionTypeReduction2.ts, 45, 18))
>B : Symbol(B, Decl(unionTypeReduction2.ts, 38, 1))
let z = !!true ? a : b; // A | B
>z : Symbol(z, Decl(unionTypeReduction2.ts, 46, 7))
>a : Symbol(a, Decl(unionTypeReduction2.ts, 45, 13))
>b : Symbol(b, Decl(unionTypeReduction2.ts, 45, 18))
z.f();
>z.f : Symbol(f, Decl(unionTypeReduction2.ts, 36, 10), Decl(unionTypeReduction2.ts, 40, 10))
>z : Symbol(z, Decl(unionTypeReduction2.ts, 46, 7))
>f : Symbol(f, Decl(unionTypeReduction2.ts, 36, 10), Decl(unionTypeReduction2.ts, 40, 10))
z.f('hello');
>z.f : Symbol(f, Decl(unionTypeReduction2.ts, 36, 10), Decl(unionTypeReduction2.ts, 40, 10))
>z : Symbol(z, Decl(unionTypeReduction2.ts, 46, 7))
>f : Symbol(f, Decl(unionTypeReduction2.ts, 36, 10), Decl(unionTypeReduction2.ts, 40, 10))
}
// Repro from #35414
interface ReturnVal {
>ReturnVal : Symbol(ReturnVal, Decl(unionTypeReduction2.ts, 49, 1))
something(): void;
>something : Symbol(ReturnVal.something, Decl(unionTypeReduction2.ts, 53, 21))
}
const k: ReturnVal = { something() { } }
>k : Symbol(k, Decl(unionTypeReduction2.ts, 57, 5))
>ReturnVal : Symbol(ReturnVal, Decl(unionTypeReduction2.ts, 49, 1))
>something : Symbol(something, Decl(unionTypeReduction2.ts, 57, 22))
declare const val: ReturnVal;
>val : Symbol(val, Decl(unionTypeReduction2.ts, 59, 13))
>ReturnVal : Symbol(ReturnVal, Decl(unionTypeReduction2.ts, 49, 1))
function run(options: { something?(b?: string): void }) {
>run : Symbol(run, Decl(unionTypeReduction2.ts, 59, 29))
>options : Symbol(options, Decl(unionTypeReduction2.ts, 60, 13))
>something : Symbol(something, Decl(unionTypeReduction2.ts, 60, 23))
>b : Symbol(b, Decl(unionTypeReduction2.ts, 60, 35))
const something = options.something ?? val.something;
>something : Symbol(something, Decl(unionTypeReduction2.ts, 61, 9))
>options.something : Symbol(something, Decl(unionTypeReduction2.ts, 60, 23))
>options : Symbol(options, Decl(unionTypeReduction2.ts, 60, 13))
>something : Symbol(something, Decl(unionTypeReduction2.ts, 60, 23))
>val.something : Symbol(ReturnVal.something, Decl(unionTypeReduction2.ts, 53, 21))
>val : Symbol(val, Decl(unionTypeReduction2.ts, 59, 13))
>something : Symbol(ReturnVal.something, Decl(unionTypeReduction2.ts, 53, 21))
something('');
>something : Symbol(something, Decl(unionTypeReduction2.ts, 61, 9))
}
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