t-youtube-transcript-fetcher
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An enhanced TypeScript library for fetching YouTube transcripts with proxy support (based on youtube-transcript)
50 lines (49 loc) • 1.48 kB
TypeScript
import { TranscriptConfig, TranscriptSegment } from './types.js';
/**
* Service class for fetching YouTube video transcripts
*/
export declare class YoutubeTranscript {
/**
* Fetches the transcript for a YouTube video
* @param videoId Video URL or ID
* @param config Configuration options
* @returns Array of transcript segments
*/
static fetchTranscript(videoId: string, config?: TranscriptConfig): Promise<TranscriptSegment[]>;
/**
* Creates fetch options with proxy configuration if provided
*/
private static getFetchOptions;
/**
* Fetches the video page content
*/
private static fetchVideoPage;
/**
* Extracts and validates captions data from the video page
*/
private static parseCaptionsData;
/**
* Extracts captions JSON data from the page content
*/
private static extractCaptionsJson;
/**
* Handles various error cases from the video page
*/
private static handlePageErrors;
/**
* Gets the URL for the transcript in the requested language
*/
private static getTranscriptUrl;
/**
* Validates that the requested language is available
*/
private static validateLanguageAvailability;
/**
* Fetches and parses the transcript XML
*/
private static fetchAndParseTranscript;
/**
* Extracts the video ID from either a full URL or direct ID
*/
private static retrieveVideoId;
}