Extended TS support

[m10rten]

Is your feature request related to a problem? Please describe.

• A clear and concise description of what the problem is.

The typescript compiler does not compute with the checks, so need to return valid return values other then boolean.

Input

• What parameters will be passed in or required?
• And what is the prefered type of input?

None
Output

• What will be the expected output?
• And what type does it have?

Variable is {} for example
Additional context

• Add any other context or code-examples about the feature request here.

[m10rten]

for the types such as nullish, falsy, string, boolean and date, this is doable.
But for anuthing other than this: truthy, or extended or custom user input where there are checks inside, it is very hard to get the typescript to work, so just boolean on these.