export declare type Error = string;
export declare const required: (val: unknown) => Error;
export declare const email: (val: string) => Error;
export declare type YearAfterOpts = {
    offset: number;
    now: Date;
};
export declare const yearAfter: ({ offset, now }: YearAfterOpts) => (val: Date) => Error;
export declare const iata: (val: string) => Error;
export declare const departure: (val: Date, now?: Date) => Error;
export declare const passwordScore: (value: string, userInput?: string[] | undefined) => number;
export declare const password: (value: string) => Error;