export declare function isMaybePotentiallyUnsafeDate(mixed: any): mixed is null | undefined | (Date);
export declare function isMaybeValidDate(mixed: any): mixed is null | undefined | (Date);
export declare function isMaybeBefore(mixed: any, x: Date): mixed is null | undefined | (Date);
export declare function isMaybeAfter(mixed: any, x: Date): mixed is null | undefined | (Date);
export declare function isMaybeBeforeOrAt(mixed: any, x: Date): mixed is null | undefined | (Date);
export declare function isMaybeAfterOrAt(mixed: any, x: Date): mixed is null | undefined | (Date);
export declare function isMaybeRange(mixed: any, args: {
    min?: Date;
    max?: Date;
}): mixed is null | undefined | (Date);