/**
 * Install translated `label` closures on every v10 default button under
 * `root`. Call once after the skin DOM is built. The closures read the
 * current language each invocation via `getLanguage(el)`, so they don't need
 * to be reinstalled when the language changes — only the buttons need to be
 * told to re-render (see {@link relabelButtons}).
 */
export declare function installButtonLabels(root: Element): void;
/**
 * Re-trigger an update on every button we labeled so its core re-derives
 * `state.label` via our closure and the tooltip's `$state` subscriber picks
 * up the new translated string. Call from `player.setLanguage()`.
 */
export declare function relabelButtons(root: Element): void;