import { ElementRef, NgZone, ChangeDetectorRef } from '@angular/core';
import type { Components } from '@ionic/core';
import type { AnimationBuilder } from '@ionic/core/components';
import { Config } from '../../providers/config';
import { NavController } from '../../providers/nav-controller';
import { IonRouterOutlet } from './router-outlet';
import * as i0 from "@angular/core";
export declare interface IonBackButton extends Components.IonBackButton {
}
export declare class IonBackButton {
    private routerOutlet;
    private navCtrl;
    private config;
    private r;
    protected z: NgZone;
    defaultHref: string | undefined;
    routerAnimation: AnimationBuilder | undefined;
    protected el: HTMLElement;
    constructor(routerOutlet: IonRouterOutlet, navCtrl: NavController, config: Config, r: ElementRef, z: NgZone, c: ChangeDetectorRef);
    /**
     * @internal
     */
    onClick(ev: Event): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<IonBackButton, [{ optional: true; }, null, null, null, null, null]>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<IonBackButton, never, never, { "color": "color"; "defaultHref": "defaultHref"; "disabled": "disabled"; "icon": "icon"; "mode": "mode"; "routerAnimation": "routerAnimation"; "text": "text"; "type": "type"; }, {}, never, never, false>;
}