Feature Request: Shortcut to simplify const v = func(); is<type>(v) ? v : default

[oleg-slapdash]

I've noticed that I've been used this pattern for a while now. It would make a good quality of life improvement if I could check the type and then default to another value if the type check fails.

A common use case is when I need to call some function and then do verification:

const foo = JSON.parse('null');
const bar = is<boolean>(foo) ? foo : false;

This should be easy to simplify to:

const bar = ifType<boolean>(JSON.parse('null'), false);

The function name (ifType) is up to you

[oleg-slapdash]

Also, as an inspiration, we can look at SQL COALESCE function - https://docs.faircom.com/doc/sqlref/33405.htm. In this case, we can extend our typedef to the following: coalsceType<Target>(maybeTarget1, maybeTarget2, maybeTarget3);