import { HTMLElementBase } from '../core/html-element.js';
import type { RawChapter } from '../chapters/chapter-logic.js';
/**
 * <vz-chapter> — child of vz-video/vz-img declaring a manual chapter marker.
 *
 * A data-holder element with no shadow DOM (like <vz-annotation>). The parent
 * media element reads these to build seek-bar markers + a chapter menu and to
 * fire `vz-chapter-change`. Also emitted by delivery hydration for content-id
 * embeds.
 *
 * @example
 * ```html
 * <vz-video format="MONO_360">
 *   <source src="tour.mp4" type="video/mp4" />
 *   <vz-chapter start="0" title="Lobby"></vz-chapter>
 *   <vz-chapter start="42.5" title="Main hall"></vz-chapter>
 * </vz-video>
 * ```
 */
export declare class VzChapterElement extends HTMLElementBase {
    static get observedAttributes(): string[];
    /** Parse this element's attributes into a RawChapter. */
    getData(): RawChapter;
}
/** Register the <vz-chapter> custom element. */
export declare function registerChapter(): void;
//# sourceMappingURL=vz-chapter.d.ts.map