amzn/style-dictionary

{
  "size": {
    "font": {
      "small" : {
        "value": "0.75",
        "comment": "the small size of the font"
      },
      "medium": {
        "value": "1",
        "comment": "the medium size of the font"
      },
      "large" : {
        "value": "2",
        "comment": "the large size of the font"
      },
      "base"  : {
        "value": "{size.font.medium.value}",
        "comment": "the base size of the font"
      }
    }
  }
}