import { Chapter, Comment, Problem, Supplement } from '@heduapp/book-objects/business-object';
import { UUID } from '@heduapp/book-objects/business-object/abstract-business-object';
import { Transaction } from 'objection';
import { ContentGroup, ContentGroupTypes } from '../db/model';
export declare const ContentGroupBookChapterTypes: {
    BOOK: ContentGroupTypes;
    WORKSHEET_BOOK: ContentGroupTypes;
    PREPARATIONS_BOOK: ContentGroupTypes;
    TESTS_BOOK: ContentGroupTypes;
    MIXTURE_BOOK: ContentGroupTypes;
};
export declare function appendExerciseToChapter(trx: Transaction, chapter: ContentGroup, newExercise: Problem | Supplement | Comment, extendedFromID?: UUID): Promise<string>;
export declare function appendChapterToBook(trx: Transaction, book: ContentGroup, newChapter: Chapter): Promise<string>;