export declare class NonceManager {
    private static _nonceManager;
    private readonly _nonceMap;
    private _NONCE_REGEX;
    private _qosMonitor;
    static getNonceManager(): NonceManager;
    /**
     * This method returns the nonce corresponding to their resource endpoint, if it's not present in the cached nonce map
     * then fetch it from the resource server.
     *
     * @param resourceEndpoint - The endpoint the caller is requesting a resource from.
     * @returns A promise containing the nonce string.
     */
    getNonceFromResource(resourceEndpoint: string, useCachedToken: boolean): Promise<string>;
    /**
     * update Nonce Map with new nonce-resourceEndpoint pair
     */
    updateNonceMap(shrNonceKey: string, nonce: string): void;
    /**
     * return key i.e. hostname used for nonce based on url
     */
    private _getKey;
    /**
     * return the nonce value from Nonce Map if present, otherwise return empty string
     */
    private _getNonce;
}
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