export declare function promisePotentiallyUnsafeDateString(name: string, mixed: any): Promise<string>;
export declare function promiseValidDateString(name: string, mixed: any): Promise<string>;
export declare function promiseBeforeString(name: string, mixed: any, x: Date): Promise<string>;
export declare function promiseBeforeStringHandler(x: Date): (name: string, mixed: any) => Promise<string>;
export declare function promiseAfterString(name: string, mixed: any, x: Date): Promise<string>;
export declare function promiseAfterStringHandler(x: Date): (name: string, mixed: any) => Promise<string>;
export declare function promiseBeforeOrAtString(name: string, mixed: any, x: Date): Promise<string>;
export declare function promiseBeforeOrAtStringHandler(x: Date): (name: string, mixed: any) => Promise<string>;
export declare function promiseAfterOrAtString(name: string, mixed: any, x: Date): Promise<string>;
export declare function promiseAfterOrAtStringHandler(x: Date): (name: string, mixed: any) => Promise<string>;
export declare function promiseRangeString(name: string, mixed: any, args: {
    min?: Date;
    max?: Date;
}): Promise<string>;
export declare function promiseRangeStringHandler(args: {
    min?: Date;
    max?: Date;
}): (name: string, mixed: any) => Promise<string>;