/**
 * Accessibility tree crawler — extract landmark, heading, and ARIA metadata from crawled pages.
 *
 * Captures: landmarks with interactive counts, heading hierarchy with violation detection,
 * interactive elements missing accessible names, live regions, and skip-link presence.
 *
 * This data feeds ZeTa's accessibility test generator to surface WCAG 2.1 Level A/AA
 * failures (missing names, heading skips, absent skip links, unlabeled live regions).
 */
export interface LandmarkInfo {
    role: string;
    label: string;
    elementId: string;
    interactiveCount: number;
}
export interface HeadingInfo {
    level: number;
    text: string;
    elementId: string;
}
export interface MissingNameEl {
    tagName: string;
    role: string;
    elementId: string;
    htmlSnippet: string;
}
export interface LiveRegionInfo {
    role: string;
    ariaLive: string;
    ariaAtomic: string;
    currentText: string;
}
export interface AccessibilityTreeResult {
    landmarkCount: number;
    landmarks: LandmarkInfo[];
    headings: HeadingInfo[];
    headingHierarchyViolations: string[];
    missingNameElements: MissingNameEl[];
    missingNameCount: number;
    liveRegions: LiveRegionInfo[];
    totalInteractiveCount: number;
    hasSkipLink: boolean;
}
export declare function crawlAccessibilityTree(page: any): Promise<AccessibilityTreeResult>;