/**
 * 配置文件 - 集中管理所有配置项
 */
import { type SupportedLanguage } from "./bilibili/types.js";
export interface Config {
    rateLimitMs: number;
    wbiCacheExpirationMs: number;
    requestTimeoutMs: number;
    maxCacheSize: number;
    supportedLanguages: readonly SupportedLanguage[];
    baseUrl: string;
    userAgent: string;
    referer: string;
}
export declare const DEFAULT_CONFIG: Config;
export declare const config: Config;
export declare function isValidLanguage(lang: string): lang is SupportedLanguage;
export declare function getPreferredLanguage(preferredLang?: string): SupportedLanguage;
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