SelectorAPI.getAttribute can return undefined but docs indicate it always returns a string

[kPepis]

What is your Test Scenario?

Using SelectorAPI.getAttribute can return undefined for attributes that are not present in the current selector.

What is the Current behavior?

SelectorAPI.getAttribute's type indicates it returns Promise<string>.

What is the Expected behavior?

SelectorAPI.getAttribute should return Promise<string | undefined>.

Your complete test code (or attach your test files):

 const mySelector = Selector('a');
 const undefinedAttribute = mySelector.getAttribute('this-does-not-exist');
 const undefinedAttribute.trim(); // method does not exist

[AlexanderMoiseev]

Hello,

Thank you for pointing this out. We have reproduced this behavior and will fix it in the context of this thread. Please stay tuned.

[Farfurix]

Our getAttribute's returned value (undefined) is not consistent with Element.getAttribute() (null). We need to fix it in our source code and type definitions.