export declare const VisionSystem: {
    key: symbol;
    priority: number | import("@chantey/ecs").AnySystemDefinition;
    init: import("@chantey/ecs").InitSystem<import("@chantey/ecs").World<any>, {
        source: any;
        init: (element: HTMLVideoElement, source?: string) => Promise<void>;
        update: () => Promise<void>;
        stop: () => void;
    }>;
};