declare const messages: {
    readonly TIKWM_SOURCE_INVALID: "TikWM 原视频链接无效，未发送请求";
    readonly TIKWM_AUTH_REQUIRED: "TikWM 凭据无效或未配置，请在本机核对后继续";
    readonly TIKWM_QUOTA_EXHAUSTED: "TikWM 月配额已用尽，已暂停取片";
    readonly TIKWM_RATE_LIMITED: "TikWM 请求频率受限，已暂停取片";
    readonly TIKWM_RESPONSE_INVALID: "TikWM 未返回可校验的成功结果，原任务保留";
    readonly TIKWM_IDENTITY_MISMATCH: "TikWM 返回的作品身份不一致，未接受其他视频";
    readonly TIKWM_MEDIA_INVALID: "TikWM 未返回有效的原片媒体，原任务保留";
    readonly TIKWM_MEDIA_TOO_LARGE: "TikWM 原片超过允许大小，已停止下载";
    readonly TIKWM_NETWORK_ERROR: "TikWM 网络请求未完成，原任务保留，请核对后继续";
    readonly TIKWM_TIMEOUT: "TikWM 请求超时，原任务保留，未自动重试";
    readonly TIKWM_CANCELLED: "TikWM 请求已取消，原任务保留";
    readonly TIKWM_QUOTA_SAVE_FAILED: "TikWM 配额记录未能保存，已停止继续取片";
    readonly TIKWM_FILE_WRITE_FAILED: "TikWM 原片未能安全保存，原任务保留";
};
export declare class TikwmApiError extends Error {
    readonly code: keyof typeof messages;
    readonly disposition = "pause";
    constructor(code: keyof typeof messages);
}
export type TikwmQuotaWindow = {
    limit: number | null;
    remaining: number | null;
    resetAtSeconds: number | null;
};
export type TikwmQuota = {
    monthly: TikwmQuotaWindow;
    minute: TikwmQuotaWindow;
};
type Options = {
    fetch?: typeof fetch;
    signal?: AbortSignal;
    timeoutMs?: number;
};
type ResolveOptions = Options & {
    onQuota?: (quota: TikwmQuota) => void | Promise<void>;
};
export type TikwmResolvedVideo = {
    id: string;
    author: string;
    mediaUrl: string;
    durationSeconds: number | null;
};
/** Resolves only the selected public item. Never sends a browser cookie or the API key to media hosts. */
export declare function resolveTikwmVideo(sourceUrl: string, key: string, options?: ResolveOptions): Promise<TikwmResolvedVideo>;
/** The caller owns the destination directory and runs ffprobe before promoting this file into its cache. */
export declare function downloadTikwmMedia(url: string, file: string, maxBytes: number, options?: Options): Promise<{
    file: string;
    bytes: number;
}>;
export {};