How to upload multiple files using JavaScript SDK?

const args = {
	contents: files,
	path: '/Clients/Wise',
	mode: 'add',
	autorename: true,
	mute: false,
	strict_conflict: false
}
await dbxUser.filesUpload(args);

 Here the 'files' parameter that I just passed is an array of multiple files. 

So my question is, Do I need to loop through the files array and upload files one by one. Because this code doesn't work this way. but if I change the above code to :

const args = {
	contents: files[0].buffer,
	path: '/Clients/Wise',
	mode: 'add',
	autorename: true,
	mute: false,
	strict_conflict: false
}

This works perfectly. But I don't want to loop through the array. Can't I pass the array to the contents parameter