import { Block } from './Block';
import { Range } from '../rga/Range';
import type { Stateful } from '../types';
import type { Printable } from 'tree-dump/lib/types';
import type { Peritext } from '../Peritext';
import type { Point } from '../rga/Point';
import type { PeritextMlElement } from './types';
/**
 * A *fragment* represents a structural slice of a rich-text document. A
 * fragment can be bound to a specific range of text contents, however it
 * always constructs a tree of {@link Block}s, which represent the nested
 * structure of the text contents.
 */
export declare class Fragment<T = string> extends Range<T> implements Printable, Stateful {
    readonly txt: Peritext<T>;
    readonly root: Block<T>;
    constructor(txt: Peritext<T>, start: Point<T>, end: Point<T>);
    toJson(): PeritextMlElement;
    toString(tab?: string): string;
    hash: number;
    refresh(): number;
    private insertBlock;
    protected build(): void;
}