/**
 * Shared between the build-time bundler (htmlBundler) and the runtime
 * composition loader: when a sub-composition's inner root is flattened into
 * its host, these timing/identity attributes must be stripped and the
 * authored id preserved as data — identical semantics in both worlds.
 */
export declare const FLATTENED_INNER_ROOT_STRIP_ATTRS: string[];
/** Strip timing attrs, demote the authored id, and mark the flattened root. */
export declare function markFlattenedInnerRoot(prepared: Element): void;
//# sourceMappingURL=flattenedRoot.d.ts.map