import { IConversationServices } from '../interface/IConversationServices';
export declare class SchemaValidator {
    private services;
    private errors;
    private obligatorySchemas;
    private optionalSchemas;
    private schemasOnFS;
    constructor(services: IConversationServices);
    private loadSchemas;
    private checkForMissingSchemas;
    private checkForExtraSchemas;
    private validateSchemas;
    /**
     * @pre: this.services is populated (done in constructor)
     * @post:
     *   1) All required JSON schemas are found
     *   2) There are no unused JSON schemas on the filesystem
     *   3) All JSON schemas are valid
     */
    validate(): Promise<void>;
}