code: function mapValuesByProp(value: JssValue, prop: string, rule: StyleRule) {
    return value.map(item => objectToArray(item, prop, rule, false, true))
  }
docs: Map values by given prop.
  
  @param {Array} array of values
  @param {String} original property
  @param {String} original rule
  @return {String} mapped values