style-dictionary-platform-value.js

const StyleDictionary = require('style-dictionary');

// Creating a function that takes a token value
// and returns an object of the transformed value for
// the platforms defined in the config
const sdValue = (value) => {
  const styleDictionary = StyleDictionary.extend({
    // You can directly set the 'properties' aka tokens
    // of the dictionary by giving it an object
    properties: {
      myValue: {
        value,
        // you would need to know what type of token it is,
        // a color, font size, etc. For prototyping purposes
        // assuming it is a color.
        attributes: {
          category: 'color'
        }
      }
    },
    platforms: {
      css: {
        transformGroup: 'css'
      },
      iOS: {
        transformGroup: 'ios'
      },
      android: {
        transformGroup: 'android'
      }
    }
  });
  
  const output = {}

  Object.keys(styleDictionary.platforms).forEach(platform => {
    output[platform] = styleDictionary
      // .exportPlatform generates the full dictionary object,
      // but if we just want to use it for a single token
      // we can grab that token by its name
      .exportPlatform(platform).myValue.value
  });
  
  return output;
}

console.log( sdValue('#ff0000') );