import { DestroyRef, Injector, Signal } from '@angular/core';
export type OnEventOptions = {
    once?: boolean;
    capture?: boolean;
    passive?: boolean;
} & ({
    destroyRef?: DestroyRef;
    injector?: never;
    manualCleanup?: false | null | undefined;
} | {
    destroyRef?: never;
    injector?: Injector;
    manualCleanup?: false | null | undefined;
} | {
    destroyRef?: never;
    injector?: never;
    manualCleanup?: true;
});
/** Result of the `onEvent()` function. Contains the `destroy()` function to remove the listener and the `active` signal to check if the listener is still active.*/
export type OnEventRef = {
    destroy: () => void;
    active: Signal<boolean>;
};
export declare function onEvent<K extends string, E extends K extends keyof GlobalEventHandlersEventMap ? GlobalEventHandlersEventMap[K] : Event>(target: EventTarget, eventKey: K, listener: (event: E, abort: () => void) => void, options?: OnEventOptions): OnEventRef;
export declare function onEvent<E extends Event>(target: EventTarget, eventKey: string, listener: (event: E, abort: () => void) => void, options?: OnEventOptions): OnEventRef;