Is.rangeOf()
can only apply two numeric as min and max.
valid value is a random number in the range.
invalid value is a random number out of the range.
Is.enumOf()
can only apply an array as enum set.
enum set cannot be empty.
valid value is a randomly selected value from the set.
invalid value is undefined.
Is.anyOf()
can only apply Number or String as a class for now.
valid value is a randomly generated number with 8 digits.
invalid value is undefined.
Is.equal()
can apply any object as the value.
valid value is the value you set.
invalid value is undefined.