import type { Spatial } from "./types.internal.js";
export interface Positioned {
    horizontalPosition: number;
    direction: "left" | "right";
}
export declare const isVisible: ({ horizontalPosition }: Positioned) => boolean;
export declare const getFirstDate: (periods: any) => any;
export declare const getLastDate: (periods: any) => any;
export declare const withinADay: (date1: Date, date2: Date) => boolean;
export declare const invisiblePeriods: ({ horizontalPosition, width, }: Positioned & Spatial) => boolean;
