import { EventEmitter, ElementRef } from '@angular/core';
export declare class AtPermissionsService {
    private _perms;
    private _permsChange;
    constructor();
    /**
     * Registers an array of permissions
     * @param permsArr: string[]
     */
    register(permsArr: Array<string>): void;
    /**
     * Add a permission
     * @param permission
     */
    add(perm: string): void;
    /**
     * Remove a permission
     * @param perm: string
     */
    remove(perm: string): void;
    /**
     * Check if registered permissions has a defined `perm`
     * @param perm: string
     * @returns true if permissions has a perm
     */
    has(perm: string): boolean;
    /**
     * Check if registered permissions has at least one of `permsArr`
     * @param permsArr: string[]
     * @returns true if permissions has at least one of `permsArr`
     */
    hasOne(permsArr: Array<string>): boolean;
    /**
     * Remove all permissions
     */
    removeAll(): void;
    /**
     * @param strategy: string
     * @param element: ElementRef
     */
    applyStrategy(strategy: string, element: ElementRef): void;
    /**
     * Return all registered permissions
     * @returns Array<string>
     */
    readonly perms: Array<string>;
    /**
     * Observable to permissions changes
     * @returns EventEmitter<any>
     */
    readonly permsChanges: EventEmitter<any>;
}