export declare function isDictionaryOfPotentiallyUnsafeDateString(mixed: any): mixed is {
    [key: string]: string;
};
export declare function isDictionaryOfValidDateString(mixed: any): mixed is {
    [key: string]: string;
};
export declare function isDictionaryOfBeforeString(mixed: any, x: Date): mixed is {
    [key: string]: string;
};
export declare function isDictionaryOfAfterString(mixed: any, x: Date): mixed is {
    [key: string]: string;
};
export declare function isDictionaryOfBeforeOrAtString(mixed: any, x: Date): mixed is {
    [key: string]: string;
};
export declare function isDictionaryOfAfterOrAtString(mixed: any, x: Date): mixed is {
    [key: string]: string;
};
export declare function isDictionaryOfRangeString(mixed: any, args: {
    min?: Date;
    max?: Date;
}): mixed is {
    [key: string]: string;
};