amzn/style-dictionary

{
  "size": {
    "font": {
      "tiny"  : { "value": "0.75" },
      "small" : { "value": "0.875" },
      "medium": { "value": "1" },
      "large" : { "value": "1.25" },
      "xl"    : { "value": "1.5" },
      "xxl"   : { "value": "2" },
      "xxxl"  : { "value": "3" },
      "base"  : { "value": "{size.font.medium.value}" }
    }
  }
}