Looking around on js components I found out many checks, different expressed but with same purpose.
Some of them are trying to parse string to element, others, jQuery element to js simple nodeElement etc
With this Pr, I am trying to give a standard way to parse an element
So this pr:
* Creates `getElement` helper that tries to parse an argument to element or null
* Changes `isElement` to make explicit checks and return Boolean
* fixes tests deficiencies
* Remove potential false positive assertions
querySelector() returns null but
expect(document.querySelector('...')).toBeDefined()
tests that the value is not undefined
* Migrated assertions from .toBeDefined() to .not.toBeNull() for .getInstance() calls in tests
* Migrate offcanvas assertions from .toBeDefined() to .not.toBeNull() for .getInstance() call
* convert more cases to not.toBeNull assertions
Co-authored-by: XhmikosR <xhmikosr@gmail.com>
* Change from Error to TypeError
* Convert the `NAME` to upper case to make the consistency in the error message
* Update the remaining tests to be stricter
Co-authored-by: XhmikosR <xhmikosr@gmail.com>
