/// Returns an item from map. Function behaves the same as native `map-get()` but it adds additional error handling
/// when trying to get undefined keys.
///
/// ### Map
/// ```scss
/// $map: (
///   test: 50%,
/// );
/// ```
/// ### Output
/// ```scss
/// .test {
///   width: 50%;
/// }
/// ```
///
/// @access public
/// @author Ivan Ruzevic
/// @param {string} $map - Map to search.
/// @param {string} $key - Map key to find.
///
/// @example
/// /* All good */
/// .test {
///   width: map-get-strict($map, test);
/// }
///
/// /* Throws error on build */
/// .test {
///   width: map-get-strict($map, nonexistentKey);
/// }

@function map-get-strict($map, $key) {
	@if map-has-key($map, $key) {
		@return map-get($map, $key);
	}
	@else {
		@error 'ERROR: Specified index does not exist in map #{$map}, with value: #{$key}';
	}
}

// Short alias.
@function mapGS($map, $key) {
	@return map-get-strict($map, $key);
}