Angular 1.x.x multipart form data post

form-data.js

// angular.identity: see https://softwareengineering.stackexchange.com/a/283119
// Content-Type: undefined: see https://www.uncorkedstudios.com/blog/multipartformdata-file-upload-with-angularjs/
// new File([data], file): must be a blob or array see https://developer.mozilla.org/en-US/docs/Web/API/Blob

var fd = new FormData(),
    file = new File([data], objectName);

  fd.append('file', file);

  return $http.put('path/to/url', fd, {
    transformRequest: angular.identity,
    transformResponse: function(data) {
      return {
        content: data
      };
    },
    headers: {
      'Content-Type': undefined
    }
  });