import { IMotionEvent } from "./api";
/**
 *
 * Invalidate against a single value,
 * Returning a simple true/false.
 *
 * @param isInvalid
 * @param init
 */
export declare const invalidate: <T>(isInvalid: (existing: T, next: T) => boolean, init?: T) => import("@thi.ng/transducers").Transducer<T, T>;
export declare const invalidatePosition: () => import("@thi.ng/transducers").Transducer<IMotionEvent<"transform" | "particle">, IMotionEvent<"transform" | "particle">>;
export declare const invalidatePositionThreshold: (threshold?: number) => import("@thi.ng/transducers").Transducer<IMotionEvent<"transform" | "particle">, IMotionEvent<"transform" | "particle">>;
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