Strips the unit of a value in SCSS

_strip-unit.scss

/// Remove the unit of a length
/// @param {Number} $number - Number to remove unit from
/// @return {Number} - Unitless number
@function strip-unit($number) {
    @if type-of($number) == 'number' and not unitless($number) {
      @return $number / ($number * 0 + 1);
    }

    @return $number;
}