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=== tests/cases/compiler/narrowingDestructuring.ts ===
type X = { kind: "a", a: string } | { kind: "b", b: string }
>X : { kind: "a"; a: string; } | { kind: "b"; b: string; }
>kind : "a"
>a : string
>kind : "b"
>b : string
function func<T extends X>(value: T) {
>func : <T extends X>(value: T) => void
>value : T
if (value.kind === "a") {
>value.kind === "a" : boolean
>value.kind : "a" | "b"
>value : X
>kind : "a" | "b"
>"a" : "a"
value.a;
>value.a : string
>value : { kind: "a"; a: string; }
>a : string
const { a } = value;
>a : string
>value : { kind: "a"; a: string; }
} else {
value.b;
>value.b : string
>value : { kind: "b"; b: string; }
>b : string
const { b } = value;
>b : string
>value : { kind: "b"; b: string; }
}
}
type Z = { kind: "f", f: { a: number, b: string, c: number } }
>Z : { kind: "f"; f: { a: number; b: string; c: number;}; } | { kind: "g"; g: { a: string; b: number; c: string;}; }
>kind : "f"
>f : { a: number; b: string; c: number; }
>a : number
>b : string
>c : number
| { kind: "g", g: { a: string, b: number, c: string }};
>kind : "g"
>g : { a: string; b: number; c: string; }
>a : string
>b : number
>c : string
function func2<T extends Z>(value: T) {
>func2 : <T extends Z>(value: T) => void
>value : T
if (value.kind === "f") {
>value.kind === "f" : boolean
>value.kind : "f" | "g"
>value : Z
>kind : "f" | "g"
>"f" : "f"
const { f: f1 } = value;
>f : any
>f1 : { a: number; b: string; c: number; }
>value : { kind: "f"; f: { a: number; b: string; c: number; }; }
const { f: { a, ...spread } } = value;
>f : any
>a : number
>spread : { b: string; c: number; }
>value : { kind: "f"; f: { a: number; b: string; c: number; }; }
value.f;
>value.f : { a: number; b: string; c: number; }
>value : { kind: "f"; f: { a: number; b: string; c: number; }; }
>f : { a: number; b: string; c: number; }
} else {
const { g: { c, ...spread } } = value;
>g : any
>c : string
>spread : { a: string; b: number; }
>value : { kind: "g"; g: { a: string; b: number; c: string; }; }
value.g;
>value.g : { a: string; b: number; c: string; }
>value : { kind: "g"; g: { a: string; b: number; c: string; }; }
>g : { a: string; b: number; c: string; }
}
}
function func3<T extends { kind: "a", a: string } | { kind: "b", b: number }>(t: T) {
>func3 : <T extends { kind: "a"; a: string; } | { kind: "b"; b: number; }>(t: T) => void
>kind : "a"
>a : string
>kind : "b"
>b : number
>t : T
if (t.kind === "a") {
>t.kind === "a" : boolean
>t.kind : "a" | "b"
>t : { kind: "a"; a: string; } | { kind: "b"; b: number; }
>kind : "a" | "b"
>"a" : "a"
const { kind, ...r1 } = t;
>kind : "a"
>r1 : Omit<T, "kind">
>t : { kind: "a"; a: string; }
const r2 = (({ kind, ...rest }) => rest)(t);
>r2 : { a: string; }
>(({ kind, ...rest }) => rest)(t) : { a: string; }
>(({ kind, ...rest }) => rest) : ({ kind, ...rest }: { kind: "a"; a: string; }) => { a: string; }
>({ kind, ...rest }) => rest : ({ kind, ...rest }: { kind: "a"; a: string; }) => { a: string; }
>kind : "a"
>rest : { a: string; }
>rest : { a: string; }
>t : { kind: "a"; a: string; }
}
}
function farr<T extends [number, string, string] | [string, number, number]>(x: T) {
>farr : <T extends [number, string, string] | [string, number, number]>(x: T) => void
>x : T
const [head, ...tail] = x;
>head : string | number
>tail : (string | number)[]
>x : [number, string, string] | [string, number, number]
if (x[0] === 'number') {
>x[0] === 'number' : boolean
>x[0] : string | number
>x : [number, string, string] | [string, number, number]
>0 : 0
>'number' : "number"
const [head, ...tail] = x;
>head : "number"
>tail : (string | number)[]
>x : [number, string, string] | [string, number, number]
}
}
|
