// Check if key exists in map
//--------------------------------------------------------------------------------
// @param $map [Map] : map that contains $value
// @param $value [Map] : key to search for
// -------------------------------------------------------------------------------
// @return [Boolean]

@function exists($map, $value){
	@if is-map($map) {
		@if map-has-key($map, $value) {
			@return true;
		}
		@each $key, $i in $map {
			@if exists($i, $value) {
				@return true;
			}
		}
	} @return false;
}