src/helpers/Image.js

import { stringToSnake } from '../utilities/FormatUtility';
import ImageModel from '../models/Image';

/**
 * Helper class representing an image object.
 */
class Image extends ImageModel {
  /**
   * Default toJSON image format
   * @return {Object} - returns json useable for updating images
   */
  toJSON() {
    const obj = {};
    obj.url = this.url;
    if (this) {
      Object.keys(this).forEach((key) => {
        if (['id', 'type', 'url'].indexOf(key) === -1 && key.charAt(0) !== '_') {
          obj[stringToSnake(key)] = { url: this[key] };
        }
      });
    }
    return obj;
  }
}

export default Image;