export declare function assertArray(name: string, mixed: any): (any[]) | never;
export declare function assertMinLength(name: string, mixed: any, min: number): (any[]) | never;
export declare function assertMinLengthHandler(min: number): (name: string, mixed: any) => (any[]) | never;
export declare function assertMaxLength(name: string, mixed: any, max: number): (any[]) | never;
export declare function assertMaxLengthHandler(max: number): (name: string, mixed: any) => (any[]) | never;
export declare function assertLength(name: string, mixed: any, args: {
    min?: number;
    max?: number;
}): (any[]) | never;
export declare function assertLengthHandler(args: {
    min?: number;
    max?: number;
}): (name: string, mixed: any) => (any[]) | never;
export declare function assertNonEmpty(name: string, mixed: any): (any[]) | never;
export declare function assertContains(name: string, mixed: any, x: any): (any[]) | never;
export declare function assertContainsHandler(x: any): (name: string, mixed: any) => (any[]) | never;
export declare function assertNoDuplicate(name: string, mixed: any): (any[]) | never;