import { CreateEffectOptions, EffectCleanupRegisterFn, EffectRef } from "@angular/core";
export declare function $effect(fn: (onCleanup: EffectCleanupRegisterFn) => void, options?: CreateEffectOptions): EffectRef;
export declare function $effect(conditions: (() => unknown)[], fn: (onCleanup: EffectCleanupRegisterFn) => void | Promise<void>, options?: CreateEffectOptions): EffectRef;