/**
 * Render a Preact virtual node into a DOM element
 * @param {import('./index').ComponentChild} vnode The virtual node to render
 * @param {import('./internal').PreactElement} parentDom The DOM element to
 * render into
 * @param {Element | Text} [replaceNode] Optional: Attempt to re-use an
 * existing DOM tree rooted at `replaceNode`
 */
export function render(vnode: import('./index').ComponentChild, parentDom: import('./internal').PreactElement, replaceNode?: Element | Text | undefined): void;
/**
 * Update an existing DOM element with data from a Preact virtual node
 * @param {import('./index').ComponentChild} vnode The virtual node to render
 * @param {import('./internal').PreactElement} parentDom The DOM element to
 * update
 */
export function hydrate(vnode: import('./index').ComponentChild, parentDom: import('./internal').PreactElement): void;