export declare const INTERNAL_FLAG: unique symbol;
export declare const ids: {
  danmu: number;
  bridge: number;
  runtime: number;
  container: number;
};
export declare const nextFrame: (fn: FrameRequestCallback) => void;
export declare const randomIdx: (founds: Set<number>, rows: number) => number;
export declare const toNumber: (val: string, all: number) => number;
export declare const whenTransitionEnds: (node: HTMLElement) => Promise<void>;