import { IUser, ValidationInfo } from '../../types';
/**
 * Validate the user's profile thumbnail.
 *
 * The file name of the thumbnail used for the user. All user thumbnails are relative to the URL https://<community-url>/users/<userName>/info.
 * It's useful for users to include a thumbnail image, a logo, or anything that represents him/her.
 * The image should be 150 pixels wide by 150 pixels high in a web file format such as PNG, GIF, or JPEG.
 * The maximum file size is 1 MB. If the image is a different dimension, it is automatically resized to 150 by 150 and may appear warped.
 *
 * Living Atlas specific
 * - Cannot be empty
 * - The thumbnail file name cannot be one of the ArcGIS Online Reserved
 */
export declare const isValidUserProfileThumbnail: (userProfile: IUser) => ValidationInfo;