code: function compileRuleset (path, rules) {
    const ruleset = pathParser.parse(path)
  
    ruleset.rules = {}
  
    for (const ruleType in rules) {
      ruleset.rules[ruleType] = ruleParser.parse(
        rules[ruleType], ruleset.variables
      )
    }
  
    return ruleset
  }
docs: Compiles an individual ruleset
  
  @param   {String} path
  @param   {Object} rules
  
  @private
  @returns {Object} compiledRuleset