As titled

only on a small collection

A simple test comparing javascript maps vs object.entries on a small collection of values

It often does not make sense to just compare only includes vs has. If we can not create the Set beforehand to be reused, and we need to initialize it every time, it will probably deteriorate the performance and we are better off using just simple include most of the times.

new Date(value) new Date(dateString) new Date(year, monthIndex, day)

Testing some things

Testing some things