/**
 * Build an SoA {@link TransformStore} from a live scene subtree.
 *
 * This is the bridge between the `Entity` tree and the WASM/JS transform core:
 * it reads each entity's local transform (`x/y/scaleX/scaleY/rotation/opacity`)
 * and emits the flat `InputNode[]` that {@link buildStore} turns into the
 * depth-ordered, contiguous-sibling-run layout the kernel requires. It returns a
 * map from `Entity` to its store index so a caller can read each entity's world
 * matrix back out of `store.worldView()`/`store.wa…` after composition.
 *
 * The passed `root` becomes store index 0 at the identity world transform — its
 * own local transform is ignored, matching how `Scene` seeds `renderNode` with
 * the identity for `root`/`overlayRoot`. It touches no render state; wiring it
 * into `Scene.render` is a separate, flagged step.
 */
import type { Entity } from '../tree/Entity';
import { type TransformStore } from './soa';
export interface TreeStore {
    store: TransformStore;
    /** Entity -> its index in `store` (into `wa…`/`worldView`). */
    indexOf: Map<Entity, number>;
}
/**
 * Walk `root` and all descendants (via `entity.children`) into an SoA store.
 * Time O(n) in the subtree size; allocates one store per call (Stage 1 rebuilds
 * per frame — Stage 3 will cache on structural change).
 */
export declare function buildTreeStore(root: Entity): TreeStore;