How to run synchronous execution in node js?

I'm trying to run synchronous execution in node js is there any way to do that other than using events and Async because those didn't work for me?

 for (i=1; i < response.payload.parts.length; i++) {
     if(response.payload.parts[i]!==undefined && response.payload.parts[i].filename!==undefined) {
         console.log("5")
         myEmitter.emit('trah', auth, 'me', response.id, response.payload.parts[i].body.attachmentId, response.payload.parts[i].filename,response.payload.parts[i].mimeType);
     }
}

var ul = fs.readdir('content/'+response.id,(err) => {
    if(err) { console.log(err) }
})

console.log("9")

if(ul!==undefined) {
    console.log('mahiech lehné')

    for (var i=0; i<ul.length; i++) {
        if(mime.getType(ul[i]).substring(0,5)==='image') {
            console.log("10")

            // console.log(te)
            te+='<a href="http://localhost:3000/content/?id='+response.id+'&atch='+ul[i]+ '"><img border="0"  src="http://localhost:3000/content/?id='+response.id+'&atch='+ul[i]+'" width="100" height="100"></a>'
       }

       console('11----'+i)
       fs.writeFile(__dirname+'/test.txt',te)
   }
}
}
fs.writeFile(__dirname+'/test1.txt',te)
console.log("12")
res.end(buildres(te))

This my 'trah' event

myEmitter.on('trah', (auth,userId,messageId,id,name,type) => {
    gmail.users.messages.attachments.get({
            auth: auth,
            userId: userId,
            messageId: messageId,
            id: id},
        function (err, res) {
            if (err) {
                console.log('The API returned an error: ' + err);
                return;
            }
            if (!res) {
                console.log('no resposnse found')
            }
            if (res===undefined) {
                console.log('No messages found.');
            }
            if (res) {
                console.log("6")
                if(type.substring(0, 5)==='image'){
                    res.data = res.data.replace(/_/g, "/");
                    res.data = res.data.replace(/-/g, "+");
                    console.log("7")
                    fs.writeFile(__dirname + '/content/' + messageId + '/'+name,res.data,'base64',(err)=>{console.log(err)})
                }
                else {
                    console.log("8")
                    fs.writeFile(__dirname + '/content/' + messageId + '/' + name, utf8.decode(base64.decode(res.data)),(err)=>{console.log(err)})
                }
            }
        })
});

this is the execution order i get since my execution is depentdent on each ordered statement i can't get it to work right 1 2 3 4 5 9 12 6 8