code: function mirrorShorthandEdges (values) {
    if (typeof values !== 'string') {
      return
    }
  
    const valuesArr = values.split(' ')
    if (valuesArr.length === 4) {
      // swap the 2nd and 4th values
      [ valuesArr[1], valuesArr[3] ] =
      [ valuesArr[3], valuesArr[1] ]
    }
  
    return valuesArr.join(' ')
  }
docs: ---
  category: utilities/themes
  ---
  @module mirrorShorthand
   
  Mirror shorthand CSS properties for bidirectional text
  
  Given a string representing a CSS shorthand for edges,
  swaps the values such that 4 value syntax is RTL instead
  of LTR.
  
  See the following for further reference:
  https://developer.mozilla.org/en-US/docs/Web/CSS/Shorthand_properties
  
  @param {String} values - space delimited string values representing a CSS shorthand
  @returns {String} a space delimited CSS shorthand string converted to RTL