export declare const readBolbData: (blob: Blob, parseType?: 'text' | 'arrayBuffer', size?: number | undefined) => Promise<string | ArrayBuffer | null>;
export declare const str2UTF8: (str: string) => number[] | Uint8Array;
export declare function throttle(callback: (...arg: []) => void, delay?: number): () => void;
export declare const getFullDir: (path: string | undefined, name: string) => string;
export declare const sleep: (ms: number) => Promise<unknown>;
/** return true when versionA > versionB */
export declare const compareVersion: (versionA: string, versionB: string) => boolean;