code: function makeThemeVars (prefix, vars) {
    const themeVars = {}
    Object.keys(vars).forEach(variable => {
      themeVars[camelize(`${prefix}-${variable}`)] = vars[variable]
    })
    return themeVars
  }
docs: ---
  category: utilities/themes
  ---
  Given a prefix and a theme object, prepends the object keys with
  the designated prefix and camel cases the concatenation.
  
  @param {String} prefix - a string to prepend to object keys
  @param {Object} vars - an object
  @returns {Object} a modified object with prefixed keys