export declare class DomRegion {
    dri: number;
    parent: Document | HTMLElement;
    firstElement: ChildNode | null;
    lastElement: ChildNode | null;
    constructor(parent: Document | HTMLElement);
    constructor(parent: Document | HTMLElement, start: number, length: number);
    length: () => number;
    start: () => number;
    end: () => number;
    positionOfFirst: () => number;
    positionOfLast: () => number;
    setStart(start: number): void;
    setEnd(end: number): void;
    setFirst(el: ChildNode | null): void;
    setLast(el: ChildNode | null): void;
    update(firstEl: ChildNode | null, lastEl: ChildNode | null): void;
    updateByIndexes(first: number, last: number): void;
}
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