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=== tests/cases/compiler/narrowingDestructuring.ts ===
type X = { kind: "a", a: string } | { kind: "b", b: string }
>X : Symbol(X, Decl(narrowingDestructuring.ts, 0, 0))
>kind : Symbol(kind, Decl(narrowingDestructuring.ts, 0, 10))
>a : Symbol(a, Decl(narrowingDestructuring.ts, 0, 21))
>kind : Symbol(kind, Decl(narrowingDestructuring.ts, 0, 37))
>b : Symbol(b, Decl(narrowingDestructuring.ts, 0, 48))
function func<T extends X>(value: T) {
>func : Symbol(func, Decl(narrowingDestructuring.ts, 0, 60))
>T : Symbol(T, Decl(narrowingDestructuring.ts, 2, 14))
>X : Symbol(X, Decl(narrowingDestructuring.ts, 0, 0))
>value : Symbol(value, Decl(narrowingDestructuring.ts, 2, 27))
>T : Symbol(T, Decl(narrowingDestructuring.ts, 2, 14))
if (value.kind === "a") {
>value.kind : Symbol(kind, Decl(narrowingDestructuring.ts, 0, 10), Decl(narrowingDestructuring.ts, 0, 37))
>value : Symbol(value, Decl(narrowingDestructuring.ts, 2, 27))
>kind : Symbol(kind, Decl(narrowingDestructuring.ts, 0, 10), Decl(narrowingDestructuring.ts, 0, 37))
value.a;
>value.a : Symbol(a, Decl(narrowingDestructuring.ts, 0, 21))
>value : Symbol(value, Decl(narrowingDestructuring.ts, 2, 27))
>a : Symbol(a, Decl(narrowingDestructuring.ts, 0, 21))
const { a } = value;
>a : Symbol(a, Decl(narrowingDestructuring.ts, 5, 15))
>value : Symbol(value, Decl(narrowingDestructuring.ts, 2, 27))
} else {
value.b;
>value.b : Symbol(b, Decl(narrowingDestructuring.ts, 0, 48))
>value : Symbol(value, Decl(narrowingDestructuring.ts, 2, 27))
>b : Symbol(b, Decl(narrowingDestructuring.ts, 0, 48))
const { b } = value;
>b : Symbol(b, Decl(narrowingDestructuring.ts, 8, 15))
>value : Symbol(value, Decl(narrowingDestructuring.ts, 2, 27))
}
}
type Z = { kind: "f", f: { a: number, b: string, c: number } }
>Z : Symbol(Z, Decl(narrowingDestructuring.ts, 10, 1))
>kind : Symbol(kind, Decl(narrowingDestructuring.ts, 12, 10))
>f : Symbol(f, Decl(narrowingDestructuring.ts, 12, 21))
>a : Symbol(a, Decl(narrowingDestructuring.ts, 12, 26))
>b : Symbol(b, Decl(narrowingDestructuring.ts, 12, 37))
>c : Symbol(c, Decl(narrowingDestructuring.ts, 12, 48))
| { kind: "g", g: { a: string, b: number, c: string }};
>kind : Symbol(kind, Decl(narrowingDestructuring.ts, 13, 7))
>g : Symbol(g, Decl(narrowingDestructuring.ts, 13, 18))
>a : Symbol(a, Decl(narrowingDestructuring.ts, 13, 23))
>b : Symbol(b, Decl(narrowingDestructuring.ts, 13, 34))
>c : Symbol(c, Decl(narrowingDestructuring.ts, 13, 45))
function func2<T extends Z>(value: T) {
>func2 : Symbol(func2, Decl(narrowingDestructuring.ts, 13, 59))
>T : Symbol(T, Decl(narrowingDestructuring.ts, 15, 15))
>Z : Symbol(Z, Decl(narrowingDestructuring.ts, 10, 1))
>value : Symbol(value, Decl(narrowingDestructuring.ts, 15, 28))
>T : Symbol(T, Decl(narrowingDestructuring.ts, 15, 15))
if (value.kind === "f") {
>value.kind : Symbol(kind, Decl(narrowingDestructuring.ts, 12, 10), Decl(narrowingDestructuring.ts, 13, 7))
>value : Symbol(value, Decl(narrowingDestructuring.ts, 15, 28))
>kind : Symbol(kind, Decl(narrowingDestructuring.ts, 12, 10), Decl(narrowingDestructuring.ts, 13, 7))
const { f: f1 } = value;
>f : Symbol(f, Decl(narrowingDestructuring.ts, 12, 21))
>f1 : Symbol(f1, Decl(narrowingDestructuring.ts, 17, 15))
>value : Symbol(value, Decl(narrowingDestructuring.ts, 15, 28))
const { f: { a, ...spread } } = value;
>f : Symbol(f, Decl(narrowingDestructuring.ts, 12, 21))
>a : Symbol(a, Decl(narrowingDestructuring.ts, 18, 20))
>spread : Symbol(spread, Decl(narrowingDestructuring.ts, 18, 23))
>value : Symbol(value, Decl(narrowingDestructuring.ts, 15, 28))
value.f;
>value.f : Symbol(f, Decl(narrowingDestructuring.ts, 12, 21))
>value : Symbol(value, Decl(narrowingDestructuring.ts, 15, 28))
>f : Symbol(f, Decl(narrowingDestructuring.ts, 12, 21))
} else {
const { g: { c, ...spread } } = value;
>g : Symbol(g, Decl(narrowingDestructuring.ts, 13, 18))
>c : Symbol(c, Decl(narrowingDestructuring.ts, 21, 20))
>spread : Symbol(spread, Decl(narrowingDestructuring.ts, 21, 23))
>value : Symbol(value, Decl(narrowingDestructuring.ts, 15, 28))
value.g;
>value.g : Symbol(g, Decl(narrowingDestructuring.ts, 13, 18))
>value : Symbol(value, Decl(narrowingDestructuring.ts, 15, 28))
>g : Symbol(g, Decl(narrowingDestructuring.ts, 13, 18))
}
}
function func3<T extends { kind: "a", a: string } | { kind: "b", b: number }>(t: T) {
>func3 : Symbol(func3, Decl(narrowingDestructuring.ts, 24, 1))
>T : Symbol(T, Decl(narrowingDestructuring.ts, 26, 15))
>kind : Symbol(kind, Decl(narrowingDestructuring.ts, 26, 26))
>a : Symbol(a, Decl(narrowingDestructuring.ts, 26, 37))
>kind : Symbol(kind, Decl(narrowingDestructuring.ts, 26, 53))
>b : Symbol(b, Decl(narrowingDestructuring.ts, 26, 64))
>t : Symbol(t, Decl(narrowingDestructuring.ts, 26, 78))
>T : Symbol(T, Decl(narrowingDestructuring.ts, 26, 15))
if (t.kind === "a") {
>t.kind : Symbol(kind, Decl(narrowingDestructuring.ts, 26, 26), Decl(narrowingDestructuring.ts, 26, 53))
>t : Symbol(t, Decl(narrowingDestructuring.ts, 26, 78))
>kind : Symbol(kind, Decl(narrowingDestructuring.ts, 26, 26), Decl(narrowingDestructuring.ts, 26, 53))
const { kind, ...r1 } = t;
>kind : Symbol(kind, Decl(narrowingDestructuring.ts, 28, 15))
>r1 : Symbol(r1, Decl(narrowingDestructuring.ts, 28, 21))
>t : Symbol(t, Decl(narrowingDestructuring.ts, 26, 78))
const r2 = (({ kind, ...rest }) => rest)(t);
>r2 : Symbol(r2, Decl(narrowingDestructuring.ts, 29, 13))
>kind : Symbol(kind, Decl(narrowingDestructuring.ts, 29, 22))
>rest : Symbol(rest, Decl(narrowingDestructuring.ts, 29, 28))
>rest : Symbol(rest, Decl(narrowingDestructuring.ts, 29, 28))
>t : Symbol(t, Decl(narrowingDestructuring.ts, 26, 78))
}
}
function farr<T extends [number, string, string] | [string, number, number]>(x: T) {
>farr : Symbol(farr, Decl(narrowingDestructuring.ts, 31, 1))
>T : Symbol(T, Decl(narrowingDestructuring.ts, 33, 14))
>x : Symbol(x, Decl(narrowingDestructuring.ts, 33, 77))
>T : Symbol(T, Decl(narrowingDestructuring.ts, 33, 14))
const [head, ...tail] = x;
>head : Symbol(head, Decl(narrowingDestructuring.ts, 34, 11))
>tail : Symbol(tail, Decl(narrowingDestructuring.ts, 34, 16))
>x : Symbol(x, Decl(narrowingDestructuring.ts, 33, 77))
if (x[0] === 'number') {
>x : Symbol(x, Decl(narrowingDestructuring.ts, 33, 77))
>0 : Symbol(0)
const [head, ...tail] = x;
>head : Symbol(head, Decl(narrowingDestructuring.ts, 36, 15))
>tail : Symbol(tail, Decl(narrowingDestructuring.ts, 36, 20))
>x : Symbol(x, Decl(narrowingDestructuring.ts, 33, 77))
}
}
|
