@function values($exclude-hardcoded-values: false) {
  @return (
    'corner-extra-large': if($exclude-hardcoded-values, null, 28px),
    'corner-extra-large-top': if($exclude-hardcoded-values, null, (28px 28px 0px 0px)),
    'corner-extra-small': if($exclude-hardcoded-values, null, 4px),
    'corner-extra-small-top': if($exclude-hardcoded-values, null, (4px 4px 0px 0px)),
    'corner-full': if($exclude-hardcoded-values, null, 9999px),
    'corner-large': if($exclude-hardcoded-values, null, 16px),
    'corner-large-end': if($exclude-hardcoded-values, null, (0px 16px 16px 0px)),
    'corner-large-start': if($exclude-hardcoded-values, null, (16px 0px 0px 16px)),
    'corner-large-top': if($exclude-hardcoded-values, null, (16px 16px 0px 0px)),
    'corner-medium': if($exclude-hardcoded-values, null, 12px),
    'corner-none': if($exclude-hardcoded-values, null, 0px),
    'corner-small': if($exclude-hardcoded-values, null, 8px)
  );
}