/** Portable image atlas data shared by renderers and headless game logic. */
export interface SpriteAtlas {
    image: string;
    size: [number, number];
    frames: Record<string, {
        x: number;
        y: number;
        w: number;
        h: number;
        pivot?: [number, number];
    }>;
    animations: Record<string, {
        frames: string[];
        fps: number;
        loop?: boolean;
    }>;
}
/** Convert Aseprite JSON exports (hash or array frame layouts) to the portable atlas format. */
export declare function fromAseprite(json: unknown): SpriteAtlas;
/** Convert TexturePacker JSON exports to the portable atlas format. */
export declare function fromTexturePacker(json: unknown): SpriteAtlas;