/**
 * Browser Zoom Testing Utilities
 *
 * Utilities for testing component behavior at different browser zoom levels
 * to ensure accessibility compliance (WCAG 2.1 AA requires 200% zoom support).
 */
export interface ZoomTestConfig {
    zoomLevel: number;
    description: string;
}
export declare const ZOOM_LEVELS: ZoomTestConfig[];
/**
 * Simulates browser zoom by scaling the root font-size
 * Note: This is a simplified simulation. Real browser zoom affects more than just font-size.
 */
export declare function simulateBrowserZoom(zoomLevel: number): void;
/**
 * Resets browser zoom simulation to default
 */
export declare function resetBrowserZoom(): void;
/**
 * Gets the current effective zoom level based on root font-size
 */
export declare function getCurrentZoomLevel(): number;
/**
 * Checks if layout maintains integrity at a given zoom level
 * Returns true if no horizontal scrolling is introduced
 */
export declare function checkLayoutIntegrity(zoomLevel: number): boolean;
/**
 * Measures element dimensions at different zoom levels
 */
export declare function measureElementAtZoom(element: HTMLElement, zoomLevel: number): {
    width: number;
    height: number;
    fontSize: number;
};
/**
 * Test helper: Runs a test function at multiple zoom levels
 */
export declare function testAtZoomLevels<T>(testFn: (zoomLevel: number, config: ZoomTestConfig) => T | Promise<T>): Promise<Array<{
    config: ZoomTestConfig;
    result: T;
}>>;
/**
 * Accessibility check: Verifies WCAG 2.1 AA compliance at 200% zoom
 */
export declare function checkWCAGZoomCompliance(): {
    compliant: boolean;
    issues: string[];
};
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