import { TZDate } from "@date-fns/tz";
import { AdapterDateFns } from "../date-fns-adapter";
import type { Timezone } from "../types";
/**
 * Adapter for date-fns library, implementing the SaltDateAdapter interface.
 * Provides methods for date manipulation and formatting using date-fns, without timezone support.
 */
export declare class AdapterDateFnsTZ extends AdapterDateFns {
    private hasExplicitOffset;
    /**
     * Creates a Date object from a string or returns an invalid date.
     * @param value - The date string to parse.
     * @param timezone - The timezone to use (default is "default").
     * @returns The parsed Date object or an invalid date object.
     */
    date: <T extends string | undefined>(value?: T, timezone?: Timezone) => TZDate;
    /**
     * Gets the current date with the time set to the start of the day.
     * @param timezone - The timezone to use (default is "default").
     * @returns The current date at the start of the day.
     */
    today(timezone?: Timezone): TZDate;
    /**
     * Gets the current date and time.
     * @param timezone - The timezone to use (default is "default").
     * @returns The current date and time.
     */
    now(timezone?: Timezone): TZDate;
    /**
     * Get the timezone from the Date object
     * @returns timezone
     */
    getTimezone: (date: Date) => string;
    /**
     * Set the timezone for the Date object
     * @param date - A Date object
     * @param timezone - Timezone to set date object to
     * @returns  date object set to the timezone
     */
    setTimezone: (date: Date, timezone?: Timezone) => TZDate;
    /**
     * Clone the date object
     * @param date
     */
    clone(date: TZDate): TZDate;
    /**
     * Convert a TZDate to a plain JS Date.
     * TZDate extends Date but overrides toISOString() to return offset-aware
     * strings (e.g. "+01:00"). Returning a plain Date ensures toISOString()
     * produces standard UTC "Z" strings, consistent with all other adapters.
     * @param value - A TZDate or Date object
     * @returns A plain Date representing the same instant
     */
    toJSDate: (value: Date) => Date;
}