/**
 * Accessibility auditor — lightweight a11y checks using Playwright's aria snapshot
 * and manual DOM queries. No axe-core dependency needed.
 *
 * Checks:
 * 1. Images without alt text
 * 2. Form inputs without associated labels
 * 3. Buttons/links with no accessible name
 * 4. Missing lang attribute on html element
 * 5. Missing page title
 * 6. Empty headings
 * 7. Color contrast (limited — detects text with inline style color only)
 * 8. Keyboard-unfocusable interactive elements (tabIndex=-1 on buttons)
 */
import type { Page } from 'playwright';
export interface A11yViolation {
    rule: string;
    severity: 'critical' | 'serious' | 'moderate' | 'minor';
    count: number;
    examples: string[];
}
export interface A11yAuditResult {
    url: string;
    violations: A11yViolation[];
    passCount: number;
    score: number;
    auditedAt: string;
}
export declare function auditAccessibility(page: Page, url: string): Promise<A11yAuditResult>;