There is an error when destroy a date-picker instance

Detailed description

we have 2 tabs in a page, and one tab has a component which there is a datepicker in it, If we don’t choose the tab contained date-picker, and navigate to another page, there is an error when destroy the date-picker

Describe in detail the issue you’re having.

Is this a feature request (new component, new icon), a bug, or a general issue? component Is this issue related to a specific component? ibm-date-picker What did you expect to happen? What happened instead? What would you like to see changed? when navigate to another page and need to call ngDestroy What browser are you working in? Chrome What version of the Carbon Design System are you using? 3.14.2 What offering/product do you work on? Any pressing ship or release dates we should be aware of?

Steps to reproduce the issue

1. we have 2 pages, 1st is homepage, 2nd is a tab page which have 2tabs, and Tab2 has a component, which contains a datepicker component.
2. visit homepage, then visit the tabpage which has tab1 as default,
3. Click back icon ‘<-’ to return to homepage
4. The error appears

Additional information

• Screenshots or code

• Notes this.flatpickrInstance is an Array, when to run this.flatpickrInstance.destroy(); we need to check the length of this.flatpickrInstance

[cal-smith]

Congrats on opening the 700th issue 🎉

Also this.flatpickrInstance isn’t an array, or at least it shouldn’t be. checking !this.flatpickrInstance && !this.flatpickrInstance.destroy should be sufficient. If you’d like to open a PR with the fix that would be amazing.

[ChenCheress]

Thank you very much for your quickly support!