import { type IStream } from '../../stream/index.js';
import type { ISlottable } from '../../ui/index.js';
export declare const duringWindowActivity: <T>(source: IStream<T>) => IStream<T>;
export declare const intersection: (config?: IntersectionObserverInit) => (_: IStream<ISlottable<Node>>) => IStream<IntersectionObserverEntry[]>;
export declare const resize: (config?: ResizeObserverOptions) => (_: IStream<ISlottable<Node>>) => IStream<ResizeObserverEntry[]>;
export declare const observer: {
    documentVisibilityChange: IStream<Event>;
    duringWindowActivity: <T>(source: IStream<T>) => IStream<T>;
    intersection: (config?: IntersectionObserverInit) => (_: IStream<ISlottable<Node>>) => IStream<IntersectionObserverEntry[]>;
    resize: (config?: ResizeObserverOptions) => (_: IStream<ISlottable<Node>>) => IStream<ResizeObserverEntry[]>;
};