/// <reference types="node" />
export declare const addLengthPrefix: (data: Uint8Array) => Buffer;
export declare const stripLengthPrefix: (data: Buffer) => Buffer;
export declare const promiseTimeout: <T>(timeoutMs: number, promise: Promise<T>, error?: Error) => Promise<T>;
/**
 * Generates the single character path parameter in the Akamai CDN calls
 * @param hash A file SHA from the game manifest
 * @returns a single character 0-9a-v to preceed the hash in the CDN path
 */
export declare const fileHashToPathChar: (hash: string) => string;