export interface BaseRequirement {
    value: any;
    path: string[];
    message: string;
}
export interface RequirementFactory<R extends Requirement = Requirement> {
    (path: string[], value: any): R;
}
export declare type Requirement = SingleRequirement | DependenceRequirement | AlternativeRequirement | ConcatenationRequirement;
export interface SingleRequirement extends BaseRequirement {
    type: 'single';
}
export interface DependenceRequirement extends BaseRequirement {
    type: 'dependence';
    requirement: Requirement;
}
export interface AlternativeRequirement extends BaseRequirement {
    type: 'alternative';
    requirements: Requirement[];
}
export interface ConcatenationRequirement extends BaseRequirement {
    type: 'concatenation';
    requirements: Requirement[];
}
export declare function isRequirement(requirement: Requirement | null): requirement is Requirement;
export declare function singleRequirementFactory(message: string): RequirementFactory<SingleRequirement>;
export declare function dependenceRequirementFactory(message: string, requirement: Requirement): RequirementFactory<DependenceRequirement>;
export declare function alternativeRequirementFactory(message: string, requirements: Requirement[]): RequirementFactory<AlternativeRequirement | DependenceRequirement>;
export declare function concatenationRequirementFactory(message: string, requirements: Requirement[]): RequirementFactory<ConcatenationRequirement | DependenceRequirement>;