@function each($font-size-config) {
  @each $key, $font-size in $font-size-config {
    $line-height: 1.5rem;
    @if (length($font-size) == 2) {
      $line-height: list.nth($font-size, 2);
    }

    $font-size-config: map.set(
      $font-size-config,
      $key,
      (
        font-size: list.nth($font-size, 1),
        line-height: $line-height,
      )
    );
  }
  @return $font-size-config;
}

$utilities: map-merge(
  $utilities,
  (
    "font-size": (
      property: font-size,
      class: text,
      variants: font-size,
      values: each($font-size-config),
    ),
  )
);