import { AbstractValidator } from '../types';
/** Constraints to validate a `Date` with. */
export interface DateConstraints {
    /**
     * The format for dates, an _ISO date_ (RFC 3339) or a numeric timestamp
     *
     * When the format is set to `unix-timestamp`, the validator will accept
     * numeric timestamps in seconds from the Epoch instead of milliseconds.
     */
    format?: 'iso' | 'timestamp' | 'unix-timestamp';
    /** The earliest value a date can have */
    from?: Date;
    /** The latest value a date can have */
    until?: Date;
}
/** A `Validator` validating dates and converting them to `Date` instances. */
export declare class DateValidator extends AbstractValidator<Date, Date | string | number> {
    readonly format?: 'iso' | 'timestamp' | 'unix-timestamp';
    readonly from?: Date;
    readonly until?: Date;
    constructor(constraints?: DateConstraints);
    validate(value: unknown): Date;
}
export declare function dateValidatorFactory(constraints: DateConstraints): DateValidator;
/** Validate dates and convert them to `Date` instances. */
export declare const date: typeof dateValidatorFactory & DateValidator;