import type { TestInstance, TestNode } from 'test-renderer';
/**
 * Checks if the given element is a host element.
 * @param node The element to check.
 */
export declare function isTestInstance(node?: TestNode | null): node is TestInstance;
export declare function isInstanceMounted(instance: TestInstance): boolean;
/**
 * Returns host siblings for given element.
 * @param instance The element start traversing from.
 */
export declare function getInstanceSiblings(instance: TestInstance): TestInstance[];
/**
 * Returns the container element of the tree.
 *
 * @param instance The element start traversing from.
 * @returns The container element of the tree.
 */
export declare function getContainerInstance(instance: TestInstance): TestInstance;