youtube-transcript - npm Package Compare versions

Comparing version 1.1.0 to 1.2.0

dist/index.d.ts

 export declare class YoutubeTranscriptError extends Error {
     constructor(message: any);
 }
+export declare class YoutubeTranscriptTooManyRequestError extends YoutubeTranscriptError {
+    constructor();
+}
+export declare class YoutubeTranscriptVideoUnavailableError extends YoutubeTranscriptError {
+    constructor(videoId: string);
+}
+export declare class YoutubeTranscriptDisabledError extends YoutubeTranscriptError {
+    constructor(videoId: string);
+}
+export declare class YoutubeTranscriptNotAvailableError extends YoutubeTranscriptError {
+    constructor(videoId: string);
+}
+export declare class YoutubeTranscriptNotAvailableLanguageError extends YoutubeTranscriptError {
+    constructor(lang: string, availableLangs: string[], videoId: string);
+}
 export interface TranscriptConfig {
     lang?: string;
-    country?: string;
 }
@@ -12,2 +26,3 @@ export interface TranscriptResponse {
     offset: number;
+    lang?: string;
 }
@@ -21,16 +36,6 @@ /**
      * @param videoId Video url or video identifier
-     * @param config Get transcript in another country and language ISO
+     * @param config Get transcript in a specific language ISO
      */
     static fetchTranscript(videoId: string, config?: TranscriptConfig): Promise<TranscriptResponse[]>;
     /**
-     * Generate tracking params for YTB API
-     * @param page
-     * @param config
-     */
-    private static generateRequest;
-    /**
-     *  'base.js' function
-     */
-    private static generateNonce;
-    /**
      * Retrieve video id from url or string
@@ -37,0 +42,0 @@ * @param videoId video url or video id

dist/youtube-transcript.common.js

@@ -15,17 +15,3 @@ 'use strict';Object.defineProperty(exports,'__esModule',{value:true});/*! *****************************************************************************
 ***************************************************************************** */
-/* global Reflect, Promise */
 
-var extendStatics = function(d, b) {
-    extendStatics = Object.setPrototypeOf ||
-        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
-        function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
-    return extendStatics(d, b);
-};
-
-function __extends(d, b) {
-    extendStatics(d, b);
-    function __() { this.constructor = d; }
-    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
-}
-
 function __awaiter(thisArg, _arguments, P, generator) {
@@ -39,209 +25,101 @@ function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
     });
+}const RE_YOUTUBE = /(?:youtube\.com\/(?:[^\/]+\/.+\/|(?:v|e(?:mbed)?)\/|.*[?&]v=)|youtu\.be\/)([^"&?\/\s]{11})/i;
+const USER_AGENT = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36,gzip(gfe)';
+const RE_XML_TRANSCRIPT = /<text start="([^"]*)" dur="([^"]*)">([^<]*)<\/text>/g;
+class YoutubeTranscriptError extends Error {
+    constructor(message) {
+        super(`[YoutubeTranscript] 🚨 ${message}`);
+    }
 }
-
-function __generator(thisArg, body) {
-    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
-    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
-    function verb(n) { return function (v) { return step([n, v]); }; }
-    function step(op) {
-        if (f) throw new TypeError("Generator is already executing.");
-        while (_) try {
-            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
-            if (y = 0, t) op = [op[0] & 2, t.value];
-            switch (op[0]) {
-                case 0: case 1: t = op; break;
-                case 4: _.label++; return { value: op[1], done: false };
-                case 5: _.label++; y = op[1]; op = [0]; continue;
-                case 7: op = _.ops.pop(); _.trys.pop(); continue;
-                default:
-                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
-                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
-                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
-                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
-                    if (t[2]) _.ops.pop();
-                    _.trys.pop(); continue;
-            }
-            op = body.call(thisArg, _);
-        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
-        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
+class YoutubeTranscriptTooManyRequestError extends YoutubeTranscriptError {
+    constructor() {
+        super('YouTube is receiving too many requests from this IP and now requires solving a captcha to continue');
     }
-}var RE_YOUTUBE = /(?:youtube\.com\/(?:[^\/]+\/.+\/|(?:v|e(?:mbed)?)\/|.*[?&]v=)|youtu\.be\/)([^"&?\/\s]{11})/i;
-var USER_AGENT = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36,gzip(gfe)';
-var YoutubeTranscriptError = /** @class */ (function (_super) {
-    __extends(YoutubeTranscriptError, _super);
-    function YoutubeTranscriptError(message) {
-        return _super.call(this, "[YoutubeTranscript] \uD83D\uDEA8 " + message) || this;
+}
+class YoutubeTranscriptVideoUnavailableError extends YoutubeTranscriptError {
+    constructor(videoId) {
+        super(`The video is no longer available (${videoId})`);
     }
-    return YoutubeTranscriptError;
-}(Error));
+}
+class YoutubeTranscriptDisabledError extends YoutubeTranscriptError {
+    constructor(videoId) {
+        super(`Transcript is disabled on this video (${videoId})`);
+    }
+}
+class YoutubeTranscriptNotAvailableError extends YoutubeTranscriptError {
+    constructor(videoId) {
+        super(`No transcripts are available for this video (${videoId})`);
+    }
+}
+class YoutubeTranscriptNotAvailableLanguageError extends YoutubeTranscriptError {
+    constructor(lang, availableLangs, videoId) {
+        super(`No transcripts are available in ${lang} this video (${videoId}). Available languages: ${availableLangs.join(', ')}`);
+    }
+}
 /**
  * Class to retrieve transcript if exist
  */
-var YoutubeTranscript = /** @class */ (function () {
-    function YoutubeTranscript() {
-    }
+class YoutubeTranscript {
     /**
      * Fetch transcript from YTB Video
      * @param videoId Video url or video identifier
-     * @param config Get transcript in another country and language ISO
+     * @param config Get transcript in a specific language ISO
      */
-    YoutubeTranscript.fetchTranscript = function (videoId, config) {
-        return __awaiter(this, void 0, void 0, function () {
-            var identifier, videoPageResponse, videoPageBody, innerTubeApiKey, transcriptResponse, body, transcripts, e_1;
-            return __generator(this, function (_a) {
-                switch (_a.label) {
-                    case 0:
-                        identifier = this.retrieveVideoId(videoId);
-                        _a.label = 1;
-                    case 1:
-                        _a.trys.push([1, 7, , 8]);
-                        return [4 /*yield*/, fetch("https://www.youtube.com/watch?v=" + identifier, {
-                                headers: {
-                                    'User-Agent': USER_AGENT,
-                                },
-                            })];
-                    case 2:
-                        videoPageResponse = _a.sent();
-                        return [4 /*yield*/, videoPageResponse.text()];
-                    case 3:
-                        videoPageBody = _a.sent();
-                        innerTubeApiKey = videoPageBody
-                            .split('"INNERTUBE_API_KEY":"')[1]
-                            .split('"')[0];
-                        if (!(innerTubeApiKey && innerTubeApiKey.length > 0)) return [3 /*break*/, 6];
-                        return [4 /*yield*/, fetch("https://www.youtube.com/youtubei/v1/get_transcript?key=" + innerTubeApiKey, {
-                                method: 'POST',
-                                body: JSON.stringify(this.generateRequest(videoPageBody, config)),
-                                headers: {
-                                    'Content-Type': 'application/json',
-                                    'User-Agent': USER_AGENT,
-                                },
-                            })];
-                    case 4:
-                        transcriptResponse = _a.sent();
-                        return [4 /*yield*/, transcriptResponse.json()];
-                    case 5:
-                        body = _a.sent();
-                        if (body.responseContext) {
-                            if (!body.actions) {
-                                throw new Error('Transcript is disabled on this video');
-                            }
-                            transcripts = body.actions[0].updateEngagementPanelAction.content
-                                .transcriptRenderer.body.transcriptBodyRenderer.cueGroups;
-                            return [2 /*return*/, transcripts.map(function (cue) { return ({
-                                    text: cue.transcriptCueGroupRenderer.cues[0].transcriptCueRenderer
-                                        .cue.simpleText,
-                                    duration: parseInt(cue.transcriptCueGroupRenderer.cues[0].transcriptCueRenderer
-                                        .durationMs),
-                                    offset: parseInt(cue.transcriptCueGroupRenderer.cues[0].transcriptCueRenderer
-                                        .startOffsetMs),
-                                }); })];
-                        }
-                        _a.label = 6;
-                    case 6: return [3 /*break*/, 8];
-                    case 7:
-                        e_1 = _a.sent();
-                        throw new YoutubeTranscriptError(e_1);
-                    case 8: return [2 /*return*/];
+    static fetchTranscript(videoId, config) {
+        var _a;
+        return __awaiter(this, void 0, void 0, function* () {
+            const identifier = this.retrieveVideoId(videoId);
+            const videoPageResponse = yield fetch(`https://www.youtube.com/watch?v=${identifier}`, {
+                headers: Object.assign(Object.assign({}, ((config === null || config === void 0 ? void 0 : config.lang) && { 'Accept-Language': config.lang })), { 'User-Agent': USER_AGENT }),
+            });
+            const videoPageBody = yield videoPageResponse.text();
+            const splittedHTML = videoPageBody.split('"captions":');
+            if (splittedHTML.length <= 1) {
+                if (videoPageBody.includes('class="g-recaptcha"')) {
+                    throw new YoutubeTranscriptTooManyRequestError();
                 }
-            });
-        });
-    };
-    /**
-     * Generate tracking params for YTB API
-     * @param page
-     * @param config
-     */
-    YoutubeTranscript.generateRequest = function (page, config) {
-        var _a, _b, _c, _d;
-        var params = (_a = page.split('"serializedShareEntity":"')[1]) === null || _a === void 0 ? void 0 : _a.split('"')[0];
-        var visitorData = (_b = page.split('"VISITOR_DATA":"')[1]) === null || _b === void 0 ? void 0 : _b.split('"')[0];
-        var sessionId = (_c = page.split('"sessionId":"')[1]) === null || _c === void 0 ? void 0 : _c.split('"')[0];
-        var clickTrackingParams = (_d = page === null || page === void 0 ? void 0 : page.split('"clickTrackingParams":"')[1]) === null || _d === void 0 ? void 0 : _d.split('"')[0];
-        return {
-            context: {
-                client: {
-                    hl: (config === null || config === void 0 ? void 0 : config.lang) || 'en',
-                    gl: (config === null || config === void 0 ? void 0 : config.country) || 'US',
-                    visitorData: visitorData,
-                    userAgent: 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36,gzip(gfe)',
-                    clientName: 'WEB',
-                    clientVersion: '2.20200925.01.00',
-                    osName: 'Macintosh',
-                    osVersion: '10_15_4',
-                    browserName: 'Chrome',
-                    browserVersion: '85.0f.4183.83',
-                    screenWidthPoints: 1440,
-                    screenHeightPoints: 770,
-                    screenPixelDensity: 2,
-                    utcOffsetMinutes: 120,
-                    userInterfaceTheme: 'USER_INTERFACE_THEME_LIGHT',
-                    connectionType: 'CONN_CELLULAR_3G',
-                },
-                request: {
-                    sessionId: sessionId,
-                    internalExperimentFlags: [],
-                    consistencyTokenJars: [],
-                },
-                user: {},
-                clientScreenNonce: this.generateNonce(),
-                clickTracking: {
-                    clickTrackingParams: clickTrackingParams,
-                },
-            },
-            params: params,
-        };
-    };
-    /**
-     *  'base.js' function
-     */
-    YoutubeTranscript.generateNonce = function () {
-        var rnd = Math.random().toString();
-        var alphabet = 'ABCDEFGHIJKLMOPQRSTUVWXYZabcdefghjijklmnopqrstuvwxyz0123456789';
-        var jda = [
-            alphabet + '+/=',
-            alphabet + '+/',
-            alphabet + '-_=',
-            alphabet + '-_.',
-            alphabet + '-_',
-        ];
-        var b = jda[3];
-        var a = [];
-        for (var i = 0; i < rnd.length - 1; i++) {
-            a.push(rnd[i].charCodeAt(i));
-        }
-        var c = '';
-        var d = 0;
-        var m, n, q, r, f, g;
-        while (d < a.length) {
-            f = a[d];
-            g = d + 1 < a.length;
-            if (g) {
-                m = a[d + 1];
+                if (!videoPageBody.includes('"playabilityStatus":')) {
+                    throw new YoutubeTranscriptVideoUnavailableError(videoId);
+                }
+                throw new YoutubeTranscriptDisabledError(videoId);
             }
-            else {
-                m = 0;
+            const captions = (_a = (() => {
+                try {
+                    return JSON.parse(splittedHTML[1].split(',"videoDetails')[0].replace('\n', ''));
+                }
+                catch (e) {
+                    return undefined;
+                }
+            })()) === null || _a === void 0 ? void 0 : _a['playerCaptionsTracklistRenderer'];
+            if (!captions) {
+                throw new YoutubeTranscriptDisabledError(videoId);
             }
-            n = d + 2 < a.length;
-            if (n) {
-                q = a[d + 2];
+            if (!('captionTracks' in captions)) {
+                throw new YoutubeTranscriptNotAvailableError(videoId);
             }
-            else {
-                q = 0;
+            if ((config === null || config === void 0 ? void 0 : config.lang) &&
+                !captions.captionTracks.some((track) => track.languageCode === (config === null || config === void 0 ? void 0 : config.lang))) {
+                throw new YoutubeTranscriptNotAvailableLanguageError(config === null || config === void 0 ? void 0 : config.lang, captions.captionTracks.map((track) => track.languageCode), videoId);
             }
-            r = f >> 2;
-            f = ((f & 3) << 4) | (m >> 4);
-            m = ((m & 15) << 2) | (q >> 6);
-            q &= 63;
-            if (!n) {
-                q = 64;
-                if (!q) {
-                    m = 64;
-                }
+            const transcriptURL = ((config === null || config === void 0 ? void 0 : config.lang) ? captions.captionTracks.find((track) => track.languageCode === config.lang)
+                : captions.captionTracks[0]).baseUrl;
+            const transcriptResponse = yield fetch(transcriptURL, {
+                headers: Object.assign(Object.assign({}, ((config === null || config === void 0 ? void 0 : config.lang) && { 'Accept-Language': config.lang })), { 'User-Agent': USER_AGENT }),
+            });
+            if (!transcriptResponse.ok) {
+                throw new YoutubeTranscriptNotAvailableError(videoId);
             }
-            c += b[r] + b[f] + b[m] + b[q];
-            d += 3;
-        }
-        return c;
-    };
+            const transcriptBody = yield transcriptResponse.text();
+            const results = [...transcriptBody.matchAll(RE_XML_TRANSCRIPT)];
+            return results.map((result) => {
+                var _a;
+                return ({
+                    text: result[3],
+                    duration: parseFloat(result[2]),
+                    offset: parseFloat(result[1]),
+                    lang: (_a = config === null || config === void 0 ? void 0 : config.lang) !== null && _a !== void 0 ? _a : captions.captionTracks[0].languageCode,
+                });
+            });
+        });
+    }
     /**
@@ -251,7 +129,7 @@ * Retrieve video id from url or string
      */
-    YoutubeTranscript.retrieveVideoId = function (videoId) {
+    static retrieveVideoId(videoId) {
         if (videoId.length === 11) {
             return videoId;
         }
-        var matchId = videoId.match(RE_YOUTUBE);
+        const matchId = videoId.match(RE_YOUTUBE);
         if (matchId && matchId.length) {
@@ -261,4 +139,3 @@ return matchId[1];
         throw new YoutubeTranscriptError('Impossible to retrieve Youtube video ID.');
-    };
-    return YoutubeTranscript;
-}());exports.YoutubeTranscript=YoutubeTranscript;exports.YoutubeTranscriptError=YoutubeTranscriptError;
+    }
+}exports.YoutubeTranscript=YoutubeTranscript;exports.YoutubeTranscriptDisabledError=YoutubeTranscriptDisabledError;exports.YoutubeTranscriptError=YoutubeTranscriptError;exports.YoutubeTranscriptNotAvailableError=YoutubeTranscriptNotAvailableError;exports.YoutubeTranscriptNotAvailableLanguageError=YoutubeTranscriptNotAvailableLanguageError;exports.YoutubeTranscriptTooManyRequestError=YoutubeTranscriptTooManyRequestError;exports.YoutubeTranscriptVideoUnavailableError=YoutubeTranscriptVideoUnavailableError;

dist/youtube-transcript.esm.js

@@ -15,17 +15,3 @@ /*! *****************************************************************************
 ***************************************************************************** */
-/* global Reflect, Promise */
 
-var extendStatics = function(d, b) {
-    extendStatics = Object.setPrototypeOf ||
-        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
-        function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
-    return extendStatics(d, b);
-};
-
-function __extends(d, b) {
-    extendStatics(d, b);
-    function __() { this.constructor = d; }
-    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
-}
-
 function __awaiter(thisArg, _arguments, P, generator) {
@@ -41,209 +27,101 @@ function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
 
-function __generator(thisArg, body) {
-    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
-    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
-    function verb(n) { return function (v) { return step([n, v]); }; }
-    function step(op) {
-        if (f) throw new TypeError("Generator is already executing.");
-        while (_) try {
-            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
-            if (y = 0, t) op = [op[0] & 2, t.value];
-            switch (op[0]) {
-                case 0: case 1: t = op; break;
-                case 4: _.label++; return { value: op[1], done: false };
-                case 5: _.label++; y = op[1]; op = [0]; continue;
-                case 7: op = _.ops.pop(); _.trys.pop(); continue;
-                default:
-                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
-                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
-                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
-                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
-                    if (t[2]) _.ops.pop();
-                    _.trys.pop(); continue;
-            }
-            op = body.call(thisArg, _);
-        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
-        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
+const RE_YOUTUBE = /(?:youtube\.com\/(?:[^\/]+\/.+\/|(?:v|e(?:mbed)?)\/|.*[?&]v=)|youtu\.be\/)([^"&?\/\s]{11})/i;
+const USER_AGENT = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36,gzip(gfe)';
+const RE_XML_TRANSCRIPT = /<text start="([^"]*)" dur="([^"]*)">([^<]*)<\/text>/g;
+class YoutubeTranscriptError extends Error {
+    constructor(message) {
+        super(`[YoutubeTranscript] 🚨 ${message}`);
     }
 }
-
-var RE_YOUTUBE = /(?:youtube\.com\/(?:[^\/]+\/.+\/|(?:v|e(?:mbed)?)\/|.*[?&]v=)|youtu\.be\/)([^"&?\/\s]{11})/i;
-var USER_AGENT = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36,gzip(gfe)';
-var YoutubeTranscriptError = /** @class */ (function (_super) {
-    __extends(YoutubeTranscriptError, _super);
-    function YoutubeTranscriptError(message) {
-        return _super.call(this, "[YoutubeTranscript] \uD83D\uDEA8 " + message) || this;
+class YoutubeTranscriptTooManyRequestError extends YoutubeTranscriptError {
+    constructor() {
+        super('YouTube is receiving too many requests from this IP and now requires solving a captcha to continue');
     }
-    return YoutubeTranscriptError;
-}(Error));
+}
+class YoutubeTranscriptVideoUnavailableError extends YoutubeTranscriptError {
+    constructor(videoId) {
+        super(`The video is no longer available (${videoId})`);
+    }
+}
+class YoutubeTranscriptDisabledError extends YoutubeTranscriptError {
+    constructor(videoId) {
+        super(`Transcript is disabled on this video (${videoId})`);
+    }
+}
+class YoutubeTranscriptNotAvailableError extends YoutubeTranscriptError {
+    constructor(videoId) {
+        super(`No transcripts are available for this video (${videoId})`);
+    }
+}
+class YoutubeTranscriptNotAvailableLanguageError extends YoutubeTranscriptError {
+    constructor(lang, availableLangs, videoId) {
+        super(`No transcripts are available in ${lang} this video (${videoId}). Available languages: ${availableLangs.join(', ')}`);
+    }
+}
 /**
  * Class to retrieve transcript if exist
  */
-var YoutubeTranscript = /** @class */ (function () {
-    function YoutubeTranscript() {
-    }
+class YoutubeTranscript {
     /**
      * Fetch transcript from YTB Video
      * @param videoId Video url or video identifier
-     * @param config Get transcript in another country and language ISO
+     * @param config Get transcript in a specific language ISO
      */
-    YoutubeTranscript.fetchTranscript = function (videoId, config) {
-        return __awaiter(this, void 0, void 0, function () {
-            var identifier, videoPageResponse, videoPageBody, innerTubeApiKey, transcriptResponse, body, transcripts, e_1;
-            return __generator(this, function (_a) {
-                switch (_a.label) {
-                    case 0:
-                        identifier = this.retrieveVideoId(videoId);
-                        _a.label = 1;
-                    case 1:
-                        _a.trys.push([1, 7, , 8]);
-                        return [4 /*yield*/, fetch("https://www.youtube.com/watch?v=" + identifier, {
-                                headers: {
-                                    'User-Agent': USER_AGENT,
-                                },
-                            })];
-                    case 2:
-                        videoPageResponse = _a.sent();
-                        return [4 /*yield*/, videoPageResponse.text()];
-                    case 3:
-                        videoPageBody = _a.sent();
-                        innerTubeApiKey = videoPageBody
-                            .split('"INNERTUBE_API_KEY":"')[1]
-                            .split('"')[0];
-                        if (!(innerTubeApiKey && innerTubeApiKey.length > 0)) return [3 /*break*/, 6];
-                        return [4 /*yield*/, fetch("https://www.youtube.com/youtubei/v1/get_transcript?key=" + innerTubeApiKey, {
-                                method: 'POST',
-                                body: JSON.stringify(this.generateRequest(videoPageBody, config)),
-                                headers: {
-                                    'Content-Type': 'application/json',
-                                    'User-Agent': USER_AGENT,
-                                },
-                            })];
-                    case 4:
-                        transcriptResponse = _a.sent();
-                        return [4 /*yield*/, transcriptResponse.json()];
-                    case 5:
-                        body = _a.sent();
-                        if (body.responseContext) {
-                            if (!body.actions) {
-                                throw new Error('Transcript is disabled on this video');
-                            }
-                            transcripts = body.actions[0].updateEngagementPanelAction.content
-                                .transcriptRenderer.body.transcriptBodyRenderer.cueGroups;
-                            return [2 /*return*/, transcripts.map(function (cue) { return ({
-                                    text: cue.transcriptCueGroupRenderer.cues[0].transcriptCueRenderer
-                                        .cue.simpleText,
-                                    duration: parseInt(cue.transcriptCueGroupRenderer.cues[0].transcriptCueRenderer
-                                        .durationMs),
-                                    offset: parseInt(cue.transcriptCueGroupRenderer.cues[0].transcriptCueRenderer
-                                        .startOffsetMs),
-                                }); })];
-                        }
-                        _a.label = 6;
-                    case 6: return [3 /*break*/, 8];
-                    case 7:
-                        e_1 = _a.sent();
-                        throw new YoutubeTranscriptError(e_1);
-                    case 8: return [2 /*return*/];
+    static fetchTranscript(videoId, config) {
+        var _a;
+        return __awaiter(this, void 0, void 0, function* () {
+            const identifier = this.retrieveVideoId(videoId);
+            const videoPageResponse = yield fetch(`https://www.youtube.com/watch?v=${identifier}`, {
+                headers: Object.assign(Object.assign({}, ((config === null || config === void 0 ? void 0 : config.lang) && { 'Accept-Language': config.lang })), { 'User-Agent': USER_AGENT }),
+            });
+            const videoPageBody = yield videoPageResponse.text();
+            const splittedHTML = videoPageBody.split('"captions":');
+            if (splittedHTML.length <= 1) {
+                if (videoPageBody.includes('class="g-recaptcha"')) {
+                    throw new YoutubeTranscriptTooManyRequestError();
                 }
-            });
-        });
-    };
-    /**
-     * Generate tracking params for YTB API
-     * @param page
-     * @param config
-     */
-    YoutubeTranscript.generateRequest = function (page, config) {
-        var _a, _b, _c, _d;
-        var params = (_a = page.split('"serializedShareEntity":"')[1]) === null || _a === void 0 ? void 0 : _a.split('"')[0];
-        var visitorData = (_b = page.split('"VISITOR_DATA":"')[1]) === null || _b === void 0 ? void 0 : _b.split('"')[0];
-        var sessionId = (_c = page.split('"sessionId":"')[1]) === null || _c === void 0 ? void 0 : _c.split('"')[0];
-        var clickTrackingParams = (_d = page === null || page === void 0 ? void 0 : page.split('"clickTrackingParams":"')[1]) === null || _d === void 0 ? void 0 : _d.split('"')[0];
-        return {
-            context: {
-                client: {
-                    hl: (config === null || config === void 0 ? void 0 : config.lang) || 'en',
-                    gl: (config === null || config === void 0 ? void 0 : config.country) || 'US',
-                    visitorData: visitorData,
-                    userAgent: 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.83 Safari/537.36,gzip(gfe)',
-                    clientName: 'WEB',
-                    clientVersion: '2.20200925.01.00',
-                    osName: 'Macintosh',
-                    osVersion: '10_15_4',
-                    browserName: 'Chrome',
-                    browserVersion: '85.0f.4183.83',
-                    screenWidthPoints: 1440,
-                    screenHeightPoints: 770,
-                    screenPixelDensity: 2,
-                    utcOffsetMinutes: 120,
-                    userInterfaceTheme: 'USER_INTERFACE_THEME_LIGHT',
-                    connectionType: 'CONN_CELLULAR_3G',
-                },
-                request: {
-                    sessionId: sessionId,
-                    internalExperimentFlags: [],
-                    consistencyTokenJars: [],
-                },
-                user: {},
-                clientScreenNonce: this.generateNonce(),
-                clickTracking: {
-                    clickTrackingParams: clickTrackingParams,
-                },
-            },
-            params: params,
-        };
-    };
-    /**
-     *  'base.js' function
-     */
-    YoutubeTranscript.generateNonce = function () {
-        var rnd = Math.random().toString();
-        var alphabet = 'ABCDEFGHIJKLMOPQRSTUVWXYZabcdefghjijklmnopqrstuvwxyz0123456789';
-        var jda = [
-            alphabet + '+/=',
-            alphabet + '+/',
-            alphabet + '-_=',
-            alphabet + '-_.',
-            alphabet + '-_',
-        ];
-        var b = jda[3];
-        var a = [];
-        for (var i = 0; i < rnd.length - 1; i++) {
-            a.push(rnd[i].charCodeAt(i));
-        }
-        var c = '';
-        var d = 0;
-        var m, n, q, r, f, g;
-        while (d < a.length) {
-            f = a[d];
-            g = d + 1 < a.length;
-            if (g) {
-                m = a[d + 1];
+                if (!videoPageBody.includes('"playabilityStatus":')) {
+                    throw new YoutubeTranscriptVideoUnavailableError(videoId);
+                }
+                throw new YoutubeTranscriptDisabledError(videoId);
             }
-            else {
-                m = 0;
+            const captions = (_a = (() => {
+                try {
+                    return JSON.parse(splittedHTML[1].split(',"videoDetails')[0].replace('\n', ''));
+                }
+                catch (e) {
+                    return undefined;
+                }
+            })()) === null || _a === void 0 ? void 0 : _a['playerCaptionsTracklistRenderer'];
+            if (!captions) {
+                throw new YoutubeTranscriptDisabledError(videoId);
             }
-            n = d + 2 < a.length;
-            if (n) {
-                q = a[d + 2];
+            if (!('captionTracks' in captions)) {
+                throw new YoutubeTranscriptNotAvailableError(videoId);
             }
-            else {
-                q = 0;
+            if ((config === null || config === void 0 ? void 0 : config.lang) &&
+                !captions.captionTracks.some((track) => track.languageCode === (config === null || config === void 0 ? void 0 : config.lang))) {
+                throw new YoutubeTranscriptNotAvailableLanguageError(config === null || config === void 0 ? void 0 : config.lang, captions.captionTracks.map((track) => track.languageCode), videoId);
             }
-            r = f >> 2;
-            f = ((f & 3) << 4) | (m >> 4);
-            m = ((m & 15) << 2) | (q >> 6);
-            q &= 63;
-            if (!n) {
-                q = 64;
-                if (!q) {
-                    m = 64;
-                }
+            const transcriptURL = ((config === null || config === void 0 ? void 0 : config.lang) ? captions.captionTracks.find((track) => track.languageCode === config.lang)
+                : captions.captionTracks[0]).baseUrl;
+            const transcriptResponse = yield fetch(transcriptURL, {
+                headers: Object.assign(Object.assign({}, ((config === null || config === void 0 ? void 0 : config.lang) && { 'Accept-Language': config.lang })), { 'User-Agent': USER_AGENT }),
+            });
+            if (!transcriptResponse.ok) {
+                throw new YoutubeTranscriptNotAvailableError(videoId);
             }
-            c += b[r] + b[f] + b[m] + b[q];
-            d += 3;
-        }
-        return c;
-    };
+            const transcriptBody = yield transcriptResponse.text();
+            const results = [...transcriptBody.matchAll(RE_XML_TRANSCRIPT)];
+            return results.map((result) => {
+                var _a;
+                return ({
+                    text: result[3],
+                    duration: parseFloat(result[2]),
+                    offset: parseFloat(result[1]),
+                    lang: (_a = config === null || config === void 0 ? void 0 : config.lang) !== null && _a !== void 0 ? _a : captions.captionTracks[0].languageCode,
+                });
+            });
+        });
+    }
     /**
@@ -253,7 +131,7 @@ * Retrieve video id from url or string
      */
-    YoutubeTranscript.retrieveVideoId = function (videoId) {
+    static retrieveVideoId(videoId) {
         if (videoId.length === 11) {
             return videoId;
         }
-        var matchId = videoId.match(RE_YOUTUBE);
+        const matchId = videoId.match(RE_YOUTUBE);
         if (matchId && matchId.length) {
@@ -263,6 +141,5 @@ return matchId[1];
         throw new YoutubeTranscriptError('Impossible to retrieve Youtube video ID.');
-    };
-    return YoutubeTranscript;
-}());
+    }
+}
 
-export { YoutubeTranscript, YoutubeTranscriptError };
+export { YoutubeTranscript, YoutubeTranscriptDisabledError, YoutubeTranscriptError, YoutubeTranscriptNotAvailableError, YoutubeTranscriptNotAvailableLanguageError, YoutubeTranscriptTooManyRequestError, YoutubeTranscriptVideoUnavailableError };

package.json

 {
   "name": "youtube-transcript",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "description": "Fetch transcript from a youtube video",
@@ -5,0 +5,0 @@ "main": "dist/youtube-transcript.common.js",

New alerts

Deprecated

Maintenance

The maintainer of the package marked it as deprecated. This could indicate that a single version should not be used, or that the package is no longer maintained and any new vulnerabilities will not be fixed.

Found 1 instance in 1 package

Major refactor

Supply chain risk

Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

Found 1 instance in 1 package

Worsened metrics

Total package byte prevSize

18229

decreased by-34.41%

Lines of code

312

decreased by-42.96%

Number of medium maintenance alerts

1

increased byInfinity%

Number of medium supply chain risk alerts

5

increased by25%

No dependency changes