export interface IAppAccess {
    /**
     * Verifies that the token is valid and the user has access to
     * the specified app (clientId)
     */
    valid: boolean;
    /**
     * Should the app present the current user with a "View Only" mode
     */
    viewOnlyUserTypeApp: boolean;
}
/**
 * Validates that the user has access to the application
 * and if they user should be presented a "View Only" mode
 *
 * This is only needed/valid for Esri applications that are "licensed"
 * and shipped in ArcGIS Online or ArcGIS Enterprise. Most custom applications
 * should not need or use this.
 *
 * ```js
 * import { validateAppAccess } from '@esri/arcgis-rest-request';
 *
 * return validateAppAccess('your-token', 'theClientId')
 * .then((result) => {
 *    if (!result.value) {
 *      // redirect or show some other ui
 *    } else {
 *      if (result.viewOnlyUserTypeApp) {
 *        // use this to inform your app to show a "View Only" mode
 *      }
 *    }
 * })
 * .catch((err) => {
 *  // two possible errors
 *  // invalid clientId: {"error":{"code":400,"messageCode":"GWM_0007","message":"Invalid request","details":[]}}
 *  // invalid token: {"error":{"code":498,"message":"Invalid token.","details":[]}}
 * })
 * ```
 *
 * Note: This is only usable by Esri applications hosted on *arcgis.com, *esri.com or within
 * an ArcGIS Enterprise installation. Custom applications can not use this.
 *
 * @param token platform token
 * @param clientId application client id
 * @param portal Optional
 */
export declare function validateAppAccess(token: string, clientId: string, portal?: string): Promise<IAppAccess>;