標準化 CloudFront Functions 檢視器請求中的查詢字串參數

function handler(event) {
     var qs=[];
     for (var key in event.request.querystring) {
         if (event.request.querystring[key].multiValue) {
             event.request.querystring[key].multiValue.forEach((mv) => {qs.push(key + "=" + mv.value)});
         } else {
             qs.push(key + "=" + event.request.querystring[key].value);
         }
     };
     
     event.request.querystring = qs.sort().join('&');
     
      
     return event.request;
}