Function isInterval

Checks if x is an interval, x is an interval if it's an object which has x.lo and x.hi defined and both are numbers

Example

Interval.isInterval(
  Interval()
) // true
Interval.isInterval(
  undefined
) // false
Interval.isInterval(
  {lo: 1, hi: 2}
) // true

Returns

true if x is an interval