export declare function assertDictionaryOfPotentiallyUnsafeDateString(name: string, mixed: any): ({ [key: string]: string; }) | never; export declare function assertDictionaryOfValidDateString(name: string, mixed: any): ({ [key: string]: string; }) | never; export declare function assertDictionaryOfBeforeString(name: string, mixed: any, x: Date): ({ [key: string]: string; }) | never; export declare function assertDictionaryOfBeforeStringHandler(x: Date): (name: string, mixed: any) => ({ [key: string]: string; }) | never; export declare function assertDictionaryOfAfterString(name: string, mixed: any, x: Date): ({ [key: string]: string; }) | never; export declare function assertDictionaryOfAfterStringHandler(x: Date): (name: string, mixed: any) => ({ [key: string]: string; }) | never; export declare function assertDictionaryOfBeforeOrAtString(name: string, mixed: any, x: Date): ({ [key: string]: string; }) | never; export declare function assertDictionaryOfBeforeOrAtStringHandler(x: Date): (name: string, mixed: any) => ({ [key: string]: string; }) | never; export declare function assertDictionaryOfAfterOrAtString(name: string, mixed: any, x: Date): ({ [key: string]: string; }) | never; export declare function assertDictionaryOfAfterOrAtStringHandler(x: Date): (name: string, mixed: any) => ({ [key: string]: string; }) | never; export declare function assertDictionaryOfRangeString(name: string, mixed: any, args: { min?: Date; max?: Date; }): ({ [key: string]: string; }) | never; export declare function assertDictionaryOfRangeStringHandler(args: { min?: Date; max?: Date; }): (name: string, mixed: any) => ({ [key: string]: string; }) | never;