@function kf-ease($easing, $animation-map) {
  $animation-map: _normalize-map-hierarchy($animation-map);

  $seperated: _kf-properties-extractor($animation-map);
  $anim-map: nth($seperated, 1);
  $prop-map: nth($seperated, 2);

  $return-map: ();
  @each $s, $ptv in $anim-map {
    $ptv-m: ();
    @each $p, $tv in $ptv {
      $tv-m: ();
      @each $t, $v in $tv {
        $new-v: $v;
        @if type-of($v) != list {
          $new-v: ($v, $easing);
        }
        $tv-m: map-merge($tv-m, ($t: $new-v));
      }
      $ptv-m: map-merge($ptv-m, ($p: $tv-m));
    }
    $return-map: map-merge($return-map, ($s: $ptv-m));
  }

  @return map-merge($return-map, $prop-map);
}

@mixin kf-ease($m...) {
  @include kf(kf-ease($m...));
}