TypeScript/tests/baselines/reference/iterableArrayPattern12.types
Wesley Wigham 87d10eb055
Eliminate well known symbols as a concept in the checker and rely on unique symbols (#42543)
* Eliminate well-known symbols in the checker: 2021 edition

* Actually update the lib text to say unique symbol, too (this is unneeded with compat code in place, but this makes goto-def make more sense)

* Add test showing mismatched symbol constructor type interop

* Add more test cases for some other related issues this fixes

* Revert computed name change

* Style comments
2021-02-22 14:43:28 -08:00

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=== tests/cases/conformance/es6/destructuring/iterableArrayPattern12.ts ===
class Bar { x }
>Bar : Bar
>x : any
class Foo extends Bar { y }
>Foo : Foo
>Bar : Bar
>y : any
class FooIterator {
>FooIterator : FooIterator
next() {
>next : () => { value: Foo; done: boolean; }
return {
>{ value: new Foo, done: false } : { value: Foo; done: boolean; }
value: new Foo,
>value : Foo
>new Foo : Foo
>Foo : typeof Foo
done: false
>done : boolean
>false : false
};
}
[Symbol.iterator]() {
>[Symbol.iterator] : () => this
>Symbol.iterator : unique symbol
>Symbol : SymbolConstructor
>iterator : unique symbol
return this;
>this : this
}
}
function fun([a, ...b] = new FooIterator) { }
>fun : ([a, ...b]?: FooIterator) => void
>a : Foo
>b : Foo[]
>new FooIterator : FooIterator
>FooIterator : typeof FooIterator
fun(new FooIterator);
>fun(new FooIterator) : void
>fun : ([a, ...b]?: FooIterator) => void
>new FooIterator : FooIterator
>FooIterator : typeof FooIterator