/**
 * -------------------------------------------------------------------------------------------
 * Copyright (c) Microsoft Corporation.  All Rights Reserved.  Licensed under the MIT License.
 * See License in the project root for license information.
 * -------------------------------------------------------------------------------------------
 */
/**
 * @constant
 * @function
 * Validates availability of Promise and fetch in global context
 * @returns The true in case the Promise and fetch available, otherwise throws error
 */
export declare const validatePolyFilling: () => boolean;