=== tests/cases/conformance/es6/spread/iteratorSpreadInCall4.ts ===
function foo(s1: symbol, ...s: symbol[]) { }
>foo : (s1: symbol, ...s: symbol[]) => void
>s1 : symbol
>s : symbol[]

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
    }
}

foo(...new SymbolIterator);
>foo(...new SymbolIterator) : void
>foo : (s1: symbol, ...s: symbol[]) => void
>...new SymbolIterator : symbol
>new SymbolIterator : SymbolIterator
>SymbolIterator : typeof SymbolIterator