/**
 * Generates a random string.
 * @param length Length of string.
 */
export declare function generateRandomString(length: number): string;
/**
 * Clears the hash and search fragments from window location.
 */
export declare function clearWindowLocationFragments(): void;
/**
 * Generates the code verifier for the authorization code flow with PKCE
 * (see: https://tools.ietf.org/html/rfc7636#section-4.1)
 */
export declare function encodeCodeVerifier(cv: string): string;
/**
 * Creates a code challenge.
 * @param codeVerifier Code verifier.
 */
export declare function createCodeChallenge(codeVerifier: string): string;
/**
 * Generates a code verifier.
 * @param codeVerifierLength Code verifier length.
 */
export declare function generateCodeVerifier(codeVerifierLength: number): string;
/**
 * Generates tenant based auth host url with the given auth host url
 * if a tenant is 'system', auth host will be of region based
 * @param inputURL Host URL
 * @param tenant Tenant's name
 * @param region Region
 */
export declare function generateTenantBasedAuthHost(inputURL: string, tenant?: string, region?: string): string;
/**
 * Generates region based auth host url with the given auth host url
 * @param inputURL Host URL
 * @param region Region
 */
export declare function generateRegionBasedAuthHost(inputURL: string, region?: string): string;