TypeScript/tests/baselines/reference/iteratorSpreadInCall7.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/spread/iteratorSpreadInCall7.ts ===
function foo<T>(...s: T[]) { return s[0]; }
>foo : <T>(...s: T[]) => T
>s : T[]
>s[0] : T
>s : T[]
>0 : 0
class SymbolIterator {
>SymbolIterator : SymbolIterator
next() {
>next : () => { value: symbol; done: boolean; }
return {
>{ value: Symbol(), done: false } : { value: symbol; done: boolean; }
value: Symbol(),
>value : symbol
>Symbol() : symbol
>Symbol : SymbolConstructor
done: false
>done : boolean
>false : false
};
}
[Symbol.iterator]() {
>[Symbol.iterator] : () => this
>Symbol.iterator : unique symbol
>Symbol : SymbolConstructor
>iterator : unique symbol
return this;
>this : this
}
}
class _StringIterator {
>_StringIterator : _StringIterator
next() {
>next : () => { value: string; done: boolean; }
return {
>{ value: "", done: false } : { value: string; done: boolean; }
value: "",
>value : string
>"" : ""
done: false
>done : boolean
>false : false
};
}
[Symbol.iterator]() {
>[Symbol.iterator] : () => this
>Symbol.iterator : unique symbol
>Symbol : SymbolConstructor
>iterator : unique symbol
return this;
>this : this
}
}
foo(...new SymbolIterator, ...new _StringIterator);
>foo(...new SymbolIterator, ...new _StringIterator) : symbol
>foo : <T>(...s: T[]) => T
>...new SymbolIterator : symbol
>new SymbolIterator : SymbolIterator
>SymbolIterator : typeof SymbolIterator
>...new _StringIterator : string
>new _StringIterator : _StringIterator
>_StringIterator : typeof _StringIterator