Currently angular will fail builds due to type check if kendo-timepicker value is null/undefined.
It requires it to always be a date - making it impossible to have initially empty values or to even reset the selection/value and show a placeholder.
Even the documentation for placeholder says:
Specifies the hint the TimePicker displays when its value is `null`.
private _value: Date = null;
@Input() public set value(value: Date)
But the input does not allow this. Even the property is defined in a way that would fail type checks in any newer angular project (strict mode is the default).
The only workaround currently is to disable type check with $any()