import { CanActivateChildFn, CanActivateFn, CanDeactivateFn } from '@angular/router';
/**
 * Chains route configured guards on canActivate or canActivateChild, calling them after each other, waiting for each one before calling the next.
 *
 * @param guards The array of guards to process.
 * @returns The result of the first guard that returns `false` or an instance of a `UrlTree`, otherwise `true`.
 */
export declare function chainActivationGuards(guards: CanActivateFn[] | CanActivateChildFn[]): CanActivateFn | CanActivateChildFn;
/**
 * Chains route configured guards on canDeactivate, calling them after each other, waiting for each one before calling the next.
 *
 * @param guards The array of guards to process.
 * @returns The result of the first guard that returns `false` or an instance of a `UrlTree`, otherwise `true`.
 */
export declare function chainDeactivationGuards(guards: CanDeactivateFn<never>[]): CanDeactivateFn<never>;