emsdk/upstream/emscripten/node_modules/clean-css/lib/options/inline.js

function inlineOptionsFrom(rules) {
  if (Array.isArray(rules)) {
    return rules;
  }

  if (rules === false) {
    return ['none'];
  }

  return undefined === rules
    ? ['local']
    : rules.split(',');
}

module.exports = inlineOptionsFrom;