import { SpanielTrackedElement, DOMMargin, IntersectionObserverClass } from './interfaces';
export { Watcher, WatcherConfig } from './watcher';
import { SpanielObserver } from './spaniel-observer';
import { setGlobalEngine, getGlobalEngine } from './metal/engine';
import { on, off, scheduleWork, scheduleRead, Frame } from './metal/index';
import w from './metal/window-proxy';
import { invalidate } from './metal/window-proxy';
import { WatcherCallback, EventName, WatcherCallbackOptions } from './watcher';
declare const IntersectionObserver: IntersectionObserverClass;
export { on, off, scheduleRead, scheduleWork, IntersectionObserver, SpanielObserver, SpanielTrackedElement, setGlobalEngine, getGlobalEngine, w as __w__, invalidate, WatcherCallback, EventName, WatcherCallbackOptions };
export declare function queryElement(el: Element, callback: (clientRect: ClientRect, frame: Frame) => void): void;
export declare function elementSatisfiesRatio(el: HTMLElement, ratio: number, callback: (result: Boolean) => void, rootMargin?: DOMMargin): void;