/**
 * <om-step> — a config element (spec: "Map Stories / Grammar"), the same
 * citizenship class as <om-behavior>: its attributes are read by the
 * parent <om-story>'s timeline build, never by this class itself. Steps
 * REFERENCE layers/overlays by id and are only valid inside <om-story>;
 * a step that CONTAINS elements is a validation error (the
 * reference-never-contain rule, enforced mechanically).
 */
import { HTMLElementBase } from "../env";
export declare class OmStepElement extends HTMLElementBase {
    connectedCallback(): void;
}