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=== tests/cases/compiler/inferFromNestedSameShapeTuple.ts ===
// repro #48524
type Magic<X> = X extends [[infer Y, ...infer _], ...infer __] ? Y : never;
>Magic : Symbol(Magic, Decl(inferFromNestedSameShapeTuple.ts, 0, 0))
>X : Symbol(X, Decl(inferFromNestedSameShapeTuple.ts, 2, 11))
>X : Symbol(X, Decl(inferFromNestedSameShapeTuple.ts, 2, 11))
>Y : Symbol(Y, Decl(inferFromNestedSameShapeTuple.ts, 2, 33))
>_ : Symbol(_, Decl(inferFromNestedSameShapeTuple.ts, 2, 45))
>__ : Symbol(__, Decl(inferFromNestedSameShapeTuple.ts, 2, 58))
>Y : Symbol(Y, Decl(inferFromNestedSameShapeTuple.ts, 2, 33))
type R = Magic<[[number]]>
>R : Symbol(R, Decl(inferFromNestedSameShapeTuple.ts, 2, 75))
>Magic : Symbol(Magic, Decl(inferFromNestedSameShapeTuple.ts, 0, 0))
// repro #52722
type Recursive<Id> = {
>Recursive : Symbol(Recursive, Decl(inferFromNestedSameShapeTuple.ts, 4, 26))
>Id : Symbol(Id, Decl(inferFromNestedSameShapeTuple.ts, 8, 15))
id: Id
>id : Symbol(id, Decl(inferFromNestedSameShapeTuple.ts, 8, 22))
>Id : Symbol(Id, Decl(inferFromNestedSameShapeTuple.ts, 8, 15))
children: readonly Recursive<Id>[]
>children : Symbol(children, Decl(inferFromNestedSameShapeTuple.ts, 9, 10))
>Recursive : Symbol(Recursive, Decl(inferFromNestedSameShapeTuple.ts, 4, 26))
>Id : Symbol(Id, Decl(inferFromNestedSameShapeTuple.ts, 8, 15))
}
declare function getIds<Id>(items: readonly Recursive<Id>[]): Id[];
>getIds : Symbol(getIds, Decl(inferFromNestedSameShapeTuple.ts, 11, 1))
>Id : Symbol(Id, Decl(inferFromNestedSameShapeTuple.ts, 13, 24))
>items : Symbol(items, Decl(inferFromNestedSameShapeTuple.ts, 13, 28))
>Recursive : Symbol(Recursive, Decl(inferFromNestedSameShapeTuple.ts, 4, 26))
>Id : Symbol(Id, Decl(inferFromNestedSameShapeTuple.ts, 13, 24))
>Id : Symbol(Id, Decl(inferFromNestedSameShapeTuple.ts, 13, 24))
const items = [{
>items : Symbol(items, Decl(inferFromNestedSameShapeTuple.ts, 15, 5))
id: 'a',
>id : Symbol(id, Decl(inferFromNestedSameShapeTuple.ts, 15, 16))
children: [{
>children : Symbol(children, Decl(inferFromNestedSameShapeTuple.ts, 16, 12))
id: 'b',
>id : Symbol(id, Decl(inferFromNestedSameShapeTuple.ts, 17, 16))
children: []
>children : Symbol(children, Decl(inferFromNestedSameShapeTuple.ts, 18, 16))
}]
}] as const satisfies readonly Recursive<string>[]
>const : Symbol(const)
>Recursive : Symbol(Recursive, Decl(inferFromNestedSameShapeTuple.ts, 4, 26))
const foo = getIds(items)
>foo : Symbol(foo, Decl(inferFromNestedSameShapeTuple.ts, 23, 5))
>getIds : Symbol(getIds, Decl(inferFromNestedSameShapeTuple.ts, 11, 1))
>items : Symbol(items, Decl(inferFromNestedSameShapeTuple.ts, 15, 5))
// variant with a fresh argument
const foo2 = getIds([{
>foo2 : Symbol(foo2, Decl(inferFromNestedSameShapeTuple.ts, 26, 5))
>getIds : Symbol(getIds, Decl(inferFromNestedSameShapeTuple.ts, 11, 1))
id: 'a',
>id : Symbol(id, Decl(inferFromNestedSameShapeTuple.ts, 26, 22))
children: [{
>children : Symbol(children, Decl(inferFromNestedSameShapeTuple.ts, 27, 12))
id: 'b',
>id : Symbol(id, Decl(inferFromNestedSameShapeTuple.ts, 28, 16))
children: []
>children : Symbol(children, Decl(inferFromNestedSameShapeTuple.ts, 29, 16))
}]
}] as const)
>const : Symbol(const)
// Repro from comment in #49226
type T1<T> = [number, T1<{ x: T }>];
>T1 : Symbol(T1, Decl(inferFromNestedSameShapeTuple.ts, 32, 12))
>T : Symbol(T, Decl(inferFromNestedSameShapeTuple.ts, 36, 8))
>T1 : Symbol(T1, Decl(inferFromNestedSameShapeTuple.ts, 32, 12))
>x : Symbol(x, Decl(inferFromNestedSameShapeTuple.ts, 36, 26))
>T : Symbol(T, Decl(inferFromNestedSameShapeTuple.ts, 36, 8))
type T2<T> = [42, T2<{ x: T }>];
>T2 : Symbol(T2, Decl(inferFromNestedSameShapeTuple.ts, 36, 36))
>T : Symbol(T, Decl(inferFromNestedSameShapeTuple.ts, 37, 8))
>T2 : Symbol(T2, Decl(inferFromNestedSameShapeTuple.ts, 36, 36))
>x : Symbol(x, Decl(inferFromNestedSameShapeTuple.ts, 37, 22))
>T : Symbol(T, Decl(inferFromNestedSameShapeTuple.ts, 37, 8))
function qq<U>(x: T1<U>, y: T2<U>) {
>qq : Symbol(qq, Decl(inferFromNestedSameShapeTuple.ts, 37, 32))
>U : Symbol(U, Decl(inferFromNestedSameShapeTuple.ts, 39, 12))
>x : Symbol(x, Decl(inferFromNestedSameShapeTuple.ts, 39, 15))
>T1 : Symbol(T1, Decl(inferFromNestedSameShapeTuple.ts, 32, 12))
>U : Symbol(U, Decl(inferFromNestedSameShapeTuple.ts, 39, 12))
>y : Symbol(y, Decl(inferFromNestedSameShapeTuple.ts, 39, 24))
>T2 : Symbol(T2, Decl(inferFromNestedSameShapeTuple.ts, 36, 36))
>U : Symbol(U, Decl(inferFromNestedSameShapeTuple.ts, 39, 12))
x = y;
>x : Symbol(x, Decl(inferFromNestedSameShapeTuple.ts, 39, 15))
>y : Symbol(y, Decl(inferFromNestedSameShapeTuple.ts, 39, 24))
y = x; // Error
>y : Symbol(y, Decl(inferFromNestedSameShapeTuple.ts, 39, 24))
>x : Symbol(x, Decl(inferFromNestedSameShapeTuple.ts, 39, 15))
}
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