Types are incorrect when using es6 iterator flag

[wj-eurostar]

When using the flag iterator: true the value returned by the iterator does not match the typescript types.

For this code:

const interval = parser.parseExpression('*', {
    currentDate,
    endDate,
    iterator: true
});
cost obj = interval.next().value;

The following error is shown.
Property 'value' does not exist on type 'CronDate'.

The methods such as toString, toDate etc are only accessible through interval.next().value.toString, interval.next().toDate when using this flag.

[tobiasjeckel]

Anyone know a fix or workaround? Thanks

[harrisiirak]

This library isn't currently supporting ES6 style iterators (neither the parser is compatible with it), therefore next() isn't returning correct iterator as you could expect.

The best you can do at this point: cost obj = interval.next() as IteratorResult<CronDate>

See #82