import type { DisplayObject, ImportDiagnostic, Node2D, RiveScene2DDocumentResult } from '@flighthq/types/contract';
/** Builds the sprite an image drawable stands up, and records which asset it waits on. */
export declare function createRiveImageSprite(name: string, assetIndex: number): DisplayObject;
/**
 * Imports a `.riv` as a named-graph document.
 *
 * A Rive file holds several artboards and names none of them "the" one, so the document's root is a
 * container of them rather than an arbitrary pick, and each artboard keeps its authored name.
 *
 * Image assets become **resource references** rather than acquired pixels: an embedded payload is
 * handed to the reference untouched and the textures waiting on it are listed there, so resolving one
 * binds the decoded image into every sprite that uses it at once. Nothing here decodes or fetches —
 * that is `resolveScene2DResources`' job, and the seam is what keeps import free of I/O.
 */
export declare function createScene2DDocumentFromRiveDocument(source: Readonly<Uint8Array>, diagnostics?: ImportDiagnostic[]): RiveScene2DDocumentResult | null;
/**
 * Records a nested-artboard site so the document layer can turn it into a slot. Kept out of the node
 * itself: the display tree carries no knowledge of the format that produced it.
 */
export declare function markRiveNestedArtboard(node: Node2D, artboardIndex: number): void;
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