SU-SWS/decanter

///
/// Get a value out of the $su-responsive-spacing-map
///
/// @name get-responsive-spacing-value
///
/// @param {Integer} $step - Integers from -2 to 10 including 0
/// @param {device} $device - `mobile`, `tablet` or `desktop`
/// @param {Map} $map - $su-responsive-spacing-map normally or equivalent
///
/// @group mixin
@function get-responsive-spacing-value($step: 0, $device: 'desktop', $map: $su-responsive-spacing-map) {
  $value: map-deep-get($map, $step, $device);
  @if ($step < -2 and $step > 10) {
    @error 'Responsive spacing step value must be an integer between -2 and 10.';
  }
  @if $value == null {
    @error 'Could not find this spacing value in the $map. Check the parameters.';
  }
  @return $value;
}