import PbEnhancedElement from "./index";
export default class ElementObserver {
    matchDelegate: PbEnhancedElement;
    target: Document;
    _mutationObserver: MutationObserver;
    constructor(matchDelegate: PbEnhancedElement, target?: Document);
    get mutationObserver(): MutationObserver;
    start(): void;
    stop(): void;
    catchup(): void;
    processMutationList(mutationList: Array<MutationRecord>): void;
    processAttributeChange(node: Element): void | Array<Element>;
    processRemovedNodes(nodes: Array<Element>): void;
    processAddedNodes(nodes: Array<Element>): void;
    handleRemovals(elements: Array<Element>): void;
    handleAdditions(elements: Array<Element>): void;
}