Date Picker
A date picker input.
dateProperty: DateTime;

The value returned from the selection is structured as an object with a single dateTime property. The property is an array of strings representing the date and time in ISO 8601 format (for example, 2019-10-08T16:00:00.000Z).
The object structure is as follows:
{
dateTime: string[]
}
note: Even if the DateTime picker only intends to return a single date, it still returns an array.
Date Range
The picker can be configured to return a range using the @range decorator.
@range(true)
dateProperty: DateTime;
In this case, the returned array value has the start of the range in the 0 index of the array, and the end of the range in the 1 index.