Typography types consistency (expanded typography token types are singular whereas 'standalone' typography tokens are plural)

[thomasmattheussen]

Describe the bug
There seems to be a bug in the type field of some tokens after using token-transformer with --expandTypography=true. Expanded typography tokens have types that are in singular form (fontSize, fontWeight, ...) whereas regular typo tokens have types in plural form (fontSizes, fontWeights, ...) as they are exported from the figma plugin.

EDIT: I found out that this happens due to the value keys of the typography token being used as the type for the expanded tokens. (if that makes sens 😅 )

To Reproduce
Steps to reproduce the behavior:

Transform this input JSON (exported from Figma Tokens)

{
  "example": {
    "typography": {
      "value": {
        "fontFamily": "Open Sans",
        "fontSize": "16"
      },
      "type": "typography"
    },
    "soloFontSize": {
      "xs": {
        "value": "16",
        "type": "fontSizes"
      }
    },
    "soloFontFamily": {
      "system": {
        "value": "Open Sans",
        "type": "fontFamilies"
      }
    }
  }
}

with the command

$ npx token-transformer input.json output.json example --expandTypography

The result is (notice the difference in the type fields):

{
  "typography": {
    "fontFamily": {
      "value": "Open Sans",
      "type": "fontFamily"
    },
    "fontSize": {
      "value": 16,
      "type": "fontSize"
    }
  },
  "soloFontSize": {
    "xs": {
      "value": 16,
      "type": "fontSizes"
    }
  },
  "soloFontFamily": {
    "system": {
      "value": "Open Sans",
      "type": "fontFamilies"
    }
  }
}

Expected behavior
I'd expect the types to be exactly the same instead of the expanded ones being singular and the others being in the plural form. Preferably they'd all be in the singular form for consistency with other types. So, like this:

{
  "typography": {
    "fontFamily": {
      "value": "Open Sans",
      "type": "fontFamily"
    },
    "fontSize": {
      "value": 16,
      "type": "fontSize"
    }
  },
  "soloFontSize": {
    "xs": {
      "value": 16,
      "type": "fontSize"
    }
  },
  "soloFontFamily": {
    "system": {
      "value": "Open Sans",
      "type": "fontFamily"
    }
  }
}