/**
 * Mocks the `react-virtualized-auto-sizer` component for testing
 * environments.
 *
 * Provides fixed dimensions (600x600) so tests don't need real DOM
 * measurements. Especially useful for components using virtualized lists or
 * grids.
 *
 * Opt-in: the mock is registered via `vi.doMock` so it is
 * NOT hoisted and only takes effect once `setupReactVirtualizedAutoSizer()`
 * is called from a test setup file. Tests that need the real component (or
 * their own mock) are unaffected unless they explicitly call this.
 *
 * @example
 * import { setupReactVirtualizedAutoSizer } from '@trackunit/react-vite-test-setup';
 * setupReactVirtualizedAutoSizer();
 */
export declare const setupReactVirtualizedAutoSizer: () => void;