index.js

const {
  makeCSSTheme,
  makeSCSSTheme,
  makeESMTheme,
  makeCJSTheme,
} = require('./platforms')

/**
 *
 * @param  {theme: string, INPUT_DIR: string, buildPath: string}
 * @returns {import('style-dictionary/types').Config}
 */
module.exports.makeThemeConfig = ({ source, buildPath = 'theme/' }) => {
  const [fileName = ''] = /([^\/\\]+\.json)$/.exec(source)
  if (!fileName) {
    throw new Error('Invalid source')
  }

  const [theme = ''] = fileName.split('.')
  if (!theme) {
    throw new Error('Invalid source')
  }

  return {
    source: [source],
    platforms: {
      css: makeCSSTheme({
        buildPath,
        destination: `css/${theme}.css`,
        selector: source.includes('global') ? ':root' : `.${theme}-theme`,
      }),
      scss: makeSCSSTheme({
        buildPath,
        destination: `scss/${theme}.scss`,
      }),
      esm: makeESMTheme({
        buildPath,
        destination: `js/esm/${theme}.js`,
      }),
      cjs: makeCJSTheme({
        buildPath,
        destination: `js/cjs/${theme}.js`,
      }),
    },
  }
}