import { InjectionToken, type OnDestroy } from '@angular/core';
import * as i0 from "@angular/core";
export declare const LIFECYCLE_EVENT_SOURCE: InjectionToken<EventTarget>;
export declare class IonicLifecycleCapture implements OnDestroy {
    private readonly source;
    private readonly didEnter;
    private readonly didLeave;
    constructor(source?: EventTarget | null);
    ngOnDestroy(): void;
    private onDidEnter;
    private onDidLeave;
    static ɵfac: i0.ɵɵFactoryDeclaration<IonicLifecycleCapture, [{ optional: true; }]>;
    static ɵprov: i0.ɵɵInjectableDeclaration<IonicLifecycleCapture>;
}
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