import { LayoutItem } from "@omnia/fx-models";
export declare module LayoutHelper {
    function registerBlockChangesAffectPagesChecker(elem: string, checker: (oldVal: any, newVal: any) => boolean): void;
    function checkBlockChangesAffectPages(layoutItem: LayoutItem, getLatestPublishedBlockData: (key: string) => any, getComingPublishedBlockData: (key: string) => any): boolean;
    function convertToPlainText(html: string): string;
    function getPropertyBagKeyFromBlockId(id: string): string;
    function getBlockIdFromPropertyBagKey(key: string): string;
}