Function equal

Checks if the intervals x, y are equal, they're equal when x.lo === y.lo and x.hi === y.hi, a corner case handled is when x and y are both empty intervals

Example

Interval.equal(
  Interval(2, 3),
  Interval(2, 3)
) // true

Example

Interval.equal(
  Interval.EMPTY,
  Interval.EMPTY
) // true

Returns