/**
 * Base error class for YouTube transcript errors
 */
export declare class TranscriptError extends Error {
    constructor(message: string);
}
/**
 * Error thrown when YouTube's rate limit is exceeded
 */
export declare class RateLimitError extends TranscriptError {
    constructor();
}
/**
 * Error thrown when the requested video does not exist or is private
 */
export declare class VideoUnavailableError extends TranscriptError {
    constructor(videoId: string);
}
/**
 * Error thrown when transcripts are disabled for the video
 */
export declare class TranscriptDisabledError extends TranscriptError {
    constructor(videoId: string);
}
/**
 * Error thrown when no transcripts exist for the video
 */
export declare class NoTranscriptError extends TranscriptError {
    constructor(videoId: string);
}
/**
 * Error thrown when the requested language is not available
 */
export declare class LanguageNotFoundError extends TranscriptError {
    constructor(lang: string, availableLangs: string[], videoId: string);
}