Wow that seems like an awful lot of code/explanation for such a simple task?

upload(files) {
   const config = {
      'Content-Type': 'multipart/form-data',
      onUploadProgress: function(progressEvent) {
         var percentCompleted = Math.round((progressEvent.loaded * 100) / progressEvent.total)
        console.log(percentCompleted)
      }
   }
   let data = new FormData()
   data.append(‘file’, files[0]) // or any other blob
axios.put(‘/endpoint/’, data, config)
 .then(res => console.log(res))
 .catch(err => console.log(err))
}