import React from "react";

export interface DateRange {
    startDate?: Date;
    endDate?: Date;
}

export type Setter<T> = React.Dispatch<React.SetStateAction<T>> | ((value: T) => void);

export enum NavigationAction {
    Previous = -1,
    Next = 1
}

export type DefinedRange = {
    startDate: Date;
    endDate: Date;
    label: string;
};

export type Marker = symbol;

export const MARKERS: { [key: string]: Marker } = {
    FIRST_MONTH: Symbol('firstMonth'),
    SECOND_MONTH: Symbol('secondMonth'),
};