we don't need this code

4 files changed, 0 insertions, 1897 deletions

diff --git a/protocols/Telegram/tdlib/td/example/web/tdweb/src/index.js b/protocols/Telegram/tdlib/td/example/web/tdweb/src/index.js
deleted file mode 100644
index 2f159b9424..0000000000
--- a/protocols/Telegram/tdlib/td/example/web/tdweb/src/index.js
+++ /dev/null
@@ -1,680 +0,0 @@
-import MyWorker from './worker.js';
-//import localforage from 'localforage';
-import BroadcastChannel from 'broadcast-channel';
-import uuid4 from 'uuid/v4';
-import log from './logger.js';
-
-const sleep = ms => new Promise(res => setTimeout(res, ms));
-
-/**
- * TDLib in a browser
- *
- * TDLib can be compiled to WebAssembly or asm.js using Emscripten compiler and used in a browser from JavaScript.
- * This is a convenient wrapper for TDLib in a browser which controls TDLib instance creation, handles interaction
- * with TDLib and manages a filesystem for persistent TDLib data.
- * TDLib instance is created in a Web Worker to run it in a separate thread.
- * TdClient just sends queries to the Web Worker and receives updates and results from it.
- * <br>
- * <br>
- * Differences from the TDLib JSON API:<br>
- * 1. Added the update <code>updateFatalError error:string = Update;</code> which is sent whenever TDLib encounters a fatal error.<br>
- * 2. Added the method <code>setJsLogVerbosityLevel new_verbosity_level:string = Ok;</code>, which allows to change the verbosity level of tdweb logging.<br>
- * 3. Added the possibility to use blobs as input files via the constructor <code>inputFileBlob data:<JavaScript blob> = InputFile;</code>.<br>
- * 4. The class <code>filePart</code> contains data as a JavaScript blob instead of a base64-encoded string.<br>
- * 5. The methods <code>getStorageStatistics</code>, <code>getStorageStatisticsFast</code>, <code>optimizeStorage</code>, <code>addProxy</code> and <code>getFileDownloadedPrefixSize</code> are not supported.<br>
- * <br>
- */
-class TdClient {
-  /**
-   * @callback TdClient~updateCallback
-   * @param {Object} update The update.
-   */
-
-  /**
-   * Create TdClient.
-   * @param {Object} options - Options for TDLib instance creation.
-   * @param {TdClient~updateCallback} options.onUpdate - Callback for all incoming updates.
-   * @param {string} [options.instanceName=tdlib] - Name of the TDLib instance. Currently only one instance of TdClient with a given name is allowed. All but one instances with the same name will be automatically closed. Usually, the newest non-background instance is kept alive. Files will be stored in an IndexedDb table with the same name.
-   * @param {boolean} [options.isBackground=false] - Pass true if the instance is opened from the background.
-   * @param {string} [options.jsLogVerbosityLevel=info] - The initial verbosity level of the JavaScript part of the code (one of 'error', 'warning', 'info', 'log', 'debug').
-   * @param {number} [options.logVerbosityLevel=2] - The initial verbosity level for the TDLib internal logging (0-1023).
-   * @param {boolean} [options.useDatabase=true] - Pass false to use TDLib without database and secret chats. It will significantly improve loading time, but some functionality will be unavailable.
-   * @param {boolean} [options.readOnly=false] - For debug only. Pass true to open TDLib database in read-only mode
-   * @param {string} [options.mode=auto] - For debug only. The type of the TDLib build to use. 'asmjs' for asm.js and 'wasm' for WebAssembly. If mode == 'auto' WebAbassembly will be used if supported by browser, asm.js otherwise.
-   */
-  constructor(options) {
-    log.setVerbosity(options.jsLogVerbosityLevel);
-    this.worker = new MyWorker();
-    this.worker.onmessage = e => {
-      this.onResponse(e.data);
-    };
-    this.query_id = 0;
-    this.query_callbacks = new Map();
-    if ('onUpdate' in options) {
-      this.onUpdate = options.onUpdate;
-      delete options.onUpdate;
-    }
-    options.instanceName = options.instanceName || 'tdlib';
-    this.fileManager = new FileManager(options.instanceName, this);
-    this.worker.postMessage({ '@type': 'init', options: options });
-    this.closeOtherClients(options);
-  }
-
-  /**
-   * Send a query to TDLib.
-   *
-   * If the query contains the field '@extra', the same field will be added into the result.
-   *
-   * @param {Object} query - The query for TDLib. See the [td_api.tl]{@link https://github.com/tdlib/td/blob/master/td/generate/scheme/td_api.tl} scheme or
-   *                         the automatically generated [HTML documentation]{@link https://core.telegram.org/tdlib/docs/td__api_8h.html}
-   *                         for a list of all available TDLib [methods]{@link https://core.telegram.org/tdlib/docs/classtd_1_1td__api_1_1_function.html} and
-   *                         [classes]{@link https://core.telegram.org/tdlib/docs/classtd_1_1td__api_1_1_object.html}.
-   * @returns {Promise} Promise object represents the result of the query.
-   */
-  send(query) {
-    return this.doSend(query, true);
-  }
-
-  /** @private */
-  sendInternal(query) {
-    return this.doSend(query, false);
-  }
-  /** @private */
-  doSend(query, isExternal) {
-    this.query_id++;
-    if (query['@extra']) {
-      query['@extra'] = {
-        '@old_extra': JSON.parse(JSON.stringify(query['@extra'])),
-        query_id: this.query_id
-      };
-    } else {
-      query['@extra'] = {
-        query_id: this.query_id
-      };
-    }
-    if (query['@type'] === 'setJsLogVerbosityLevel') {
-      log.setVerbosity(query.new_verbosity_level);
-    }
-
-    log.debug('send to worker: ', query);
-    const res = new Promise((resolve, reject) => {
-      this.query_callbacks.set(this.query_id, [resolve, reject]);
-    });
-    if (isExternal) {
-      this.externalPostMessage(query);
-    } else {
-      this.worker.postMessage(query);
-    }
-    return res;
-  }
-
-  /** @private */
-  externalPostMessage(query) {
-    const unsupportedMethods = [
-      'getStorageStatistics',
-      'getStorageStatisticsFast',
-      'optimizeStorage',
-      'addProxy',
-      'init',
-      'start'
-    ];
-    if (unsupportedMethods.includes(query['@type'])) {
-      this.onResponse({
-        '@type': 'error',
-        '@extra': query['@extra'],
-        code: 400,
-        message: "Method '" + query['@type'] + "' is not supported"
-      });
-      return;
-    }
-    if (query['@type'] === 'readFile' || query['@type'] === 'readFilePart') {
-      this.readFile(query);
-      return;
-    }
-    if (query['@type'] === 'deleteFile') {
-      this.deleteFile(query);
-      return;
-    }
-    this.worker.postMessage(query);
-  }
-
-  /** @private */
-  async readFile(query) {
-    const response = await this.fileManager.readFile(query);
-    this.onResponse(response);
-  }
-
-  /** @private */
-  async deleteFile(query) {
-    const response = this.fileManager.deleteFile(query);
-    try {
-      if (response.idb_key) {
-        await this.sendInternal({
-          '@type': 'deleteIdbKey',
-          idb_key: response.idb_key
-        });
-        delete response.idb_key;
-      }
-      await this.sendInternal({
-        '@type': 'deleteFile',
-        file_id: query.file_id
-      });
-    } catch (e) {}
-    this.onResponse(response);
-  }
-
-  /** @private */
-  onResponse(response) {
-    log.debug(
-      'receive from worker: ',
-      JSON.parse(
-        JSON.stringify(response, (key, value) => {
-          if (key === 'arr' || key === 'data') {
-            return undefined;
-          }
-          return value;
-        })
-      )
-    );
-
-    // for FileManager
-    response = this.prepareResponse(response);
-
-    if ('@extra' in response) {
-      const query_id = response['@extra'].query_id;
-      const [resolve, reject] = this.query_callbacks.get(query_id);
-      this.query_callbacks.delete(query_id);
-      if ('@old_extra' in response['@extra']) {
-        response['@extra'] = response['@extra']['@old_extra'];
-      }
-      if (resolve) {
-        if (response['@type'] === 'error') {
-          reject(response);
-        } else {
-          resolve(response);
-        }
-      }
-    } else {
-      if (response['@type'] === 'inited') {
-        this.onInited();
-        return;
-      }
-      if (response['@type'] === 'fsInited') {
-        this.onFsInited();
-        return;
-      }
-      if (
-        response['@type'] === 'updateAuthorizationState' &&
-        response.authorization_state['@type'] === 'authorizationStateClosed'
-      ) {
-        this.onClosed();
-      }
-      this.onUpdate(response);
-    }
-  }
-
-  /** @private */
-  prepareFile(file) {
-    return this.fileManager.registerFile(file);
-  }
-
-  /** @private */
-  prepareResponse(response) {
-    if (response['@type'] === 'file') {
-      if (false && Math.random() < 0.1) {
-        (async () => {
-          log.warn('DELETE FILE', response.id);
-          try {
-            await this.send({ '@type': 'deleteFile', file_id: response.id });
-          } catch (e) {}
-        })();
-      }
-      return this.prepareFile(response);
-    }
-    for (const key in response) {
-      const field = response[key];
-      if (
-        field &&
-        typeof field === 'object' &&
-        key !== 'data' &&
-        key !== 'arr'
-      ) {
-        response[key] = this.prepareResponse(field);
-      }
-    }
-    return response;
-  }
-
-  /** @private */
-  onBroadcastMessage(e) {
-    //const message = e.data;
-    const message = e;
-    if (message.uid === this.uid) {
-      log.info('ignore self broadcast message: ', message);
-      return;
-    }
-    log.info('got broadcast message: ', message);
-    if (message.isBackground && !this.isBackground) {
-      // continue
-    } else if (
-      (!message.isBackground && this.isBackground) ||
-      message.timestamp > this.timestamp
-    ) {
-      this.close();
-      return;
-    }
-    if (message.state === 'closed') {
-      this.waitSet.delete(message.uid);
-      if (this.waitSet.size === 0) {
-        log.info('onWaitSetEmpty');
-        this.onWaitSetEmpty();
-        this.onWaitSetEmpty = () => {};
-      }
-    } else {
-      this.waitSet.add(message.uid);
-      if (message.state !== 'closing') {
-        this.postState();
-      }
-    }
-  }
-
-  /** @private */
-  postState() {
-    const state = {
-      uid: this.uid,
-      state: this.state,
-      timestamp: this.timestamp,
-      isBackground: this.isBackground
-    };
-    log.info('Post state: ', state);
-    this.channel.postMessage(state);
-  }
-
-  /** @private */
-  onWaitSetEmpty() {
-    // nop
-  }
-
-  /** @private */
-  onFsInited() {
-    this.fileManager.init();
-  }
-
-  /** @private */
-  onInited() {
-    this.isInited = true;
-    this.doSendStart();
-  }
-
-  /** @private */
-  sendStart() {
-    this.wantSendStart = true;
-    this.doSendStart();
-  }
-
-  /** @private */
-  doSendStart() {
-    if (!this.isInited || !this.wantSendStart || this.state !== 'start') {
-      return;
-    }
-    this.wantSendStart = false;
-    this.state = 'active';
-    const query = { '@type': 'start' };
-    log.info('send to worker: ', query);
-    this.worker.postMessage(query);
-  }
-
-  /** @private */
-  onClosed() {
-    this.isClosing = true;
-    this.worker.terminate();
-    log.info('worker is terminated');
-    this.state = 'closed';
-    this.postState();
-  }
-
-  /** @private */
-  close() {
-    if (this.isClosing) {
-      return;
-    }
-    this.isClosing = true;
-
-    log.info('close state: ', this.state);
-
-    if (this.state === 'start') {
-      this.onClosed();
-      this.onUpdate({
-        '@type': 'updateAuthorizationState',
-        authorization_state: {
-          '@type': 'authorizationStateClosed'
-        }
-      });
-      return;
-    }
-
-    const query = { '@type': 'close' };
-    log.info('send to worker: ', query);
-    this.worker.postMessage(query);
-
-    this.state = 'closing';
-    this.postState();
-  }
-
-  /** @private */
-  async closeOtherClients(options) {
-    this.uid = uuid4();
-    this.state = 'start';
-    this.isBackground = !!options.isBackground;
-    this.timestamp = Date.now();
-    this.waitSet = new Set();
-
-    log.info('close other clients');
-    this.channel = new BroadcastChannel(options.instanceName, {
-      webWorkerSupport: false
-    });
-
-    this.postState();
-
-    this.channel.onmessage = message => {
-      this.onBroadcastMessage(message);
-    };
-
-    await sleep(300);
-    if (this.waitSet.size !== 0) {
-      await new Promise(resolve => {
-        this.onWaitSetEmpty = resolve;
-      });
-    }
-    this.sendStart();
-  }
-
-  /** @private */
-  onUpdate(update) {
-    log.info('ignore onUpdate');
-    //nop
-  }
-}
-
-/** @private */
-class ListNode {
-  constructor(value) {
-    this.value = value;
-    this.clear();
-  }
-
-  erase() {
-    this.prev.connect(this.next);
-    this.clear();
-  }
-  clear() {
-    this.prev = this;
-    this.next = this;
-  }
-
-  connect(other) {
-    this.next = other;
-    other.prev = this;
-  }
-
-  onUsed(other) {
-    other.usedAt = Date.now();
-    other.erase();
-    other.connect(this.next);
-    log.debug('LRU: used file_id: ', other.value);
-    this.connect(other);
-  }
-
-  getLru() {
-    if (this === this.next) {
-      throw new Error('popLru from empty list');
-    }
-    return this.prev;
-  }
-}
-
-/** @private */
-class FileManager {
-  constructor(instanceName, client) {
-    this.instanceName = instanceName;
-    this.cache = new Map();
-    this.pending = [];
-    this.transaction_id = 0;
-    this.totalSize = 0;
-    this.lru = new ListNode(-1);
-    this.client = client;
-  }
-
-  init() {
-    this.idb = new Promise((resolve, reject) => {
-      const request = indexedDB.open(this.instanceName);
-      request.onsuccess = () => resolve(request.result);
-      request.onerror = () => reject(request.error);
-    });
-    //this.store = localforage.createInstance({
-    //name: instanceName
-    //});
-    this.isInited = true;
-  }
-
-  unload(info) {
-    if (info.arr) {
-      log.debug(
-        'LRU: delete file_id: ',
-        info.node.value,
-        ' with arr.length: ',
-        info.arr.length
-      );
-      this.totalSize -= info.arr.length;
-      delete info.arr;
-    }
-    if (info.node) {
-      info.node.erase();
-      delete info.node;
-    }
-  }
-
-  registerFile(file) {
-    if (file.idb_key || file.arr) {
-      file.local.is_downloading_completed = true;
-    } else {
-      file.local.is_downloading_completed = false;
-    }
-    let info = {};
-    const cached_info = this.cache.get(file.id);
-    if (cached_info) {
-      info = cached_info;
-    } else {
-      this.cache.set(file.id, info);
-    }
-    if (file.idb_key) {
-      info.idb_key = file.idb_key;
-      delete file.idb_key;
-    } else {
-      delete info.idb_key;
-    }
-    if (file.arr) {
-      const now = Date.now();
-      while (this.totalSize > 100000000) {
-        const node = this.lru.getLru();
-        // immunity for 60 seconds
-        if (node.usedAt + 60 * 1000 > now) {
-          break;
-        }
-        const lru_info = this.cache.get(node.value);
-        this.unload(lru_info);
-      }
-
-      if (info.arr) {
-        log.warn('Got file.arr at least twice for the same file');
-        this.totalSize -= info.arr.length;
-      }
-      info.arr = file.arr;
-      delete file.arr;
-      this.totalSize += info.arr.length;
-      if (!info.node) {
-        log.debug(
-          'LRU: create file_id: ',
-          file.id,
-          ' with arr.length: ',
-          info.arr.length
-        );
-        info.node = new ListNode(file.id);
-      }
-      this.lru.onUsed(info.node);
-      log.info('Total file.arr size: ', this.totalSize);
-    }
-    info.file = file;
-    return file;
-  }
-
-  async flushLoad() {
-    const pending = this.pending;
-    this.pending = [];
-    const idb = await this.idb;
-    const transaction_id = this.transaction_id++;
-    const read = idb
-      .transaction(['keyvaluepairs'], 'readonly')
-      .objectStore('keyvaluepairs');
-    log.debug('Load group of files from idb', pending.length);
-    for (const query of pending) {
-      const request = read.get(query.key);
-      request.onsuccess = event => {
-        const blob = event.target.result;
-        if (blob) {
-          if (blob.size === 0) {
-            log.error('Got empty blob from db ', query.key);
-          }
-          query.resolve({ data: blob, transaction_id: transaction_id });
-        } else {
-          query.reject();
-        }
-      };
-      request.onerror = () => query.reject(request.error);
-    }
-  }
-
-  load(key, resolve, reject) {
-    if (this.pending.length === 0) {
-      setTimeout(() => {
-        this.flushLoad();
-      }, 1);
-    }
-    this.pending.push({ key: key, resolve: resolve, reject: reject });
-  }
-
-  async doLoadFull(info) {
-    if (info.arr) {
-      return { data: new Blob([info.arr]), transaction_id: -1 };
-    }
-    if (info.idb_key) {
-      const idb_key = info.idb_key;
-      //return this.store.getItem(idb_key);
-      return await new Promise((resolve, reject) => {
-        this.load(idb_key, resolve, reject);
-      });
-    }
-    throw new Error('File is not loaded');
-  }
-  async doLoad(info, offset, size) {
-    if (!info.arr && !info.idb_key && info.file.local.path) {
-      try {
-        const count = await this.client.sendInternal({
-          '@type': 'getFileDownloadedPrefixSize',
-          file_id: info.file.id,
-          offset: offset
-        });
-        //log.error(count, size);
-        if (!size) {
-          size = count.count;
-        } else if (size > count.count) {
-          throw new Error('File not loaded yet');
-        }
-        const res = await this.client.sendInternal({
-          '@type': 'readFilePart',
-          path: info.file.local.path,
-          offset: offset,
-          count: size
-        });
-        res.data = new Blob([res.data]);
-        res.transaction_id = -2;
-        //log.error(res);
-        return res;
-      } catch (e) {
-        log.info('readFilePart failed', info, offset, size, e);
-      }
-    }
-
-    const res = await this.doLoadFull(info);
-
-    // return slice(size, offset + size)
-    const data_size = res.data.size;
-    if (!size) {
-      size = data_size;
-    }
-    if (offset > data_size) {
-      offset = data_size;
-    }
-    res.data = res.data.slice(offset, offset + size);
-    return res;
-  }
-
-  doDelete(info) {
-    this.unload(info);
-    return info.idb_key;
-  }
-
-  async readFile(query) {
-    try {
-      if (!this.isInited) {
-        throw new Error('FileManager is not inited');
-      }
-      const info = this.cache.get(query.file_id);
-      if (!info) {
-        throw new Error('File is not loaded');
-      }
-      if (info.node) {
-        this.lru.onUsed(info.node);
-      }
-      query.offset = query.offset || 0;
-      query.size = query.count || query.size || 0;
-      const response = await this.doLoad(info, query.offset, query.size);
-      return {
-        '@type': 'filePart',
-        '@extra': query['@extra'],
-        data: response.data,
-        transaction_id: response.transaction_id
-      };
-    } catch (e) {
-      return {
-        '@type': 'error',
-        '@extra': query['@extra'],
-        code: 400,
-        message: e
-      };
-    }
-  }
-
-  deleteFile(query) {
-    const res = {
-      '@type': 'ok',
-      '@extra': query['@extra']
-    };
-    try {
-      if (!this.isInited) {
-        throw new Error('FileManager is not inited');
-      }
-      const info = this.cache.get(query.file_id);
-      if (!info) {
-        throw new Error('File is not loaded');
-      }
-      const idb_key = this.doDelete(info);
-      if (idb_key) {
-        res.idb_key = idb_key;
-      }
-    } catch (e) {}
-    return res;
-  }
-}
-
-export default TdClient;
diff --git a/protocols/Telegram/tdlib/td/example/web/tdweb/src/logger.js b/protocols/Telegram/tdlib/td/example/web/tdweb/src/logger.js
deleted file mode 100644
index 95baed0318..0000000000
--- a/protocols/Telegram/tdlib/td/example/web/tdweb/src/logger.js
+++ /dev/null
@@ -1,47 +0,0 @@
-class Logger {
-  constructor() {
-    this.setVerbosity('WARNING');
-  }
-  debug(...str) {
-    if (this.checkVerbosity(4)) {
-      console.log(...str);
-    }
-  }
-  log(...str) {
-    if (this.checkVerbosity(4)) {
-      console.log(...str);
-    }
-  }
-  info(...str) {
-    if (this.checkVerbosity(3)) {
-      console.info(...str);
-    }
-  }
-  warn(...str) {
-    if (this.checkVerbosity(2)) {
-      console.warn(...str);
-    }
-  }
-  error(...str) {
-    if (this.checkVerbosity(1)) {
-      console.error(...str);
-    }
-  }
-  setVerbosity(level, default_level = 'info') {
-    if (level === undefined) {
-      level = default_level;
-    }
-    if (typeof level === 'string') {
-      level =
-        { ERROR: 1, WARNING: 2, INFO: 3, LOG: 4, DEBUG: 4 }[
-          level.toUpperCase()
-        ] || 2;
-    }
-    this.level = level;
-  }
-  checkVerbosity(level) {
-    return this.level >= level;
-  }
-}
-let log = new Logger();
-export default log;
diff --git a/protocols/Telegram/tdlib/td/example/web/tdweb/src/wasm-utils.js b/protocols/Telegram/tdlib/td/example/web/tdweb/src/wasm-utils.js
deleted file mode 100644
index 50447d65b3..0000000000
--- a/protocols/Telegram/tdlib/td/example/web/tdweb/src/wasm-utils.js
+++ /dev/null
@@ -1,136 +0,0 @@
-// 1. +++ fetchAndInstantiate() +++ //
-
-// This library function fetches the wasm module at 'url', instantiates it with
-// the given 'importObject', and returns the instantiated object instance
-
-export async function instantiateStreaming(url, importObject) {
-  let result = await WebAssembly.instantiateStreaming(fetch(url), importObject);
-  return result.instance;
-}
-export function fetchAndInstantiate(url, importObject) {
-  return fetch(url)
-    .then(response => response.arrayBuffer())
-    .then(bytes => WebAssembly.instantiate(bytes, importObject))
-    .then(results => results.instance);
-}
-
-// 2. +++ instantiateCachedURL() +++ //
-
-// This library function fetches the wasm Module at 'url', instantiates it with
-// the given 'importObject', and returns a Promise resolving to the finished
-// wasm Instance. Additionally, the function attempts to cache the compiled wasm
-// Module in IndexedDB using 'url' as the key. The entire site's wasm cache (not
-// just the given URL) is versioned by dbVersion and any change in dbVersion on
-// any call to instantiateCachedURL() will conservatively clear out the entire
-// cache to avoid stale modules.
-export function instantiateCachedURL(dbVersion, url, importObject) {
-  const dbName = 'wasm-cache';
-  const storeName = 'wasm-cache';
-
-  // This helper function Promise-ifies the operation of opening an IndexedDB
-  // database and clearing out the cache when the version changes.
-  function openDatabase() {
-    return new Promise((resolve, reject) => {
-      var request = indexedDB.open(dbName, dbVersion);
-      request.onerror = reject.bind(null, 'Error opening wasm cache database');
-      request.onsuccess = () => {
-        resolve(request.result);
-      };
-      request.onupgradeneeded = event => {
-        var db = request.result;
-        if (db.objectStoreNames.contains(storeName)) {
-          console.log(`Clearing out version ${event.oldVersion} wasm cache`);
-          db.deleteObjectStore(storeName);
-        }
-        console.log(`Creating version ${event.newVersion} wasm cache`);
-        db.createObjectStore(storeName);
-      };
-    });
-  }
-
-  // This helper function Promise-ifies the operation of looking up 'url' in the
-  // given IDBDatabase.
-  function lookupInDatabase(db) {
-    return new Promise((resolve, reject) => {
-      var store = db.transaction([storeName]).objectStore(storeName);
-      var request = store.get(url);
-      request.onerror = reject.bind(null, `Error getting wasm module ${url}`);
-      request.onsuccess = event => {
-        if (request.result) resolve(request.result);
-        else reject(`Module ${url} was not found in wasm cache`);
-      };
-    });
-  }
-
-  // This helper function fires off an async operation to store the given wasm
-  // Module in the given IDBDatabase.
-  function storeInDatabase(db, module) {
-    var store = db.transaction([storeName], 'readwrite').objectStore(storeName);
-    var request = store.put(module, url);
-    request.onerror = err => {
-      console.log(`Failed to store in wasm cache: ${err}`);
-    };
-    request.onsuccess = err => {
-      console.log(`Successfully stored ${url} in wasm cache`);
-    };
-  }
-
-  // This helper function fetches 'url', compiles it into a Module,
-  // instantiates the Module with the given import object.
-  function fetchAndInstantiate() {
-    return fetch(url)
-      .then(response => response.arrayBuffer())
-      .then(buffer => WebAssembly.instantiate(buffer, importObject));
-  }
-
-  // With all the Promise helper functions defined, we can now express the core
-  // logic of an IndexedDB cache lookup. We start by trying to open a database.
-  return openDatabase().then(
-    db => {
-      // Now see if we already have a compiled Module with key 'url' in 'db':
-      return lookupInDatabase(db).then(
-        module => {
-          // We do! Instantiate it with the given import object.
-          console.log(`Found ${url} in wasm cache`);
-          return WebAssembly.instantiate(module, importObject);
-        },
-        errMsg => {
-          // Nope! Compile from scratch and then store the compiled Module in 'db'
-          // with key 'url' for next time.
-          console.log(errMsg);
-          return fetchAndInstantiate().then(results => {
-            try {
-              storeInDatabase(db, results.module);
-            } catch (e) {
-              console.log('Failed to store module into db');
-            }
-            return results.instance;
-          });
-        }
-      );
-    },
-    errMsg => {
-      // If opening the database failed (due to permissions or quota), fall back
-      // to simply fetching and compiling the module and don't try to store the
-      // results.
-      console.log(errMsg);
-      return fetchAndInstantiate().then(results => results.instance);
-    }
-  );
-}
-
-export async function instantiateAny(version, url, importObject) {
-  console.log("instantiate");
-  try {
-    return await instantiateStreaming(url, importObject);
-  } catch (e) {
-    console.log("instantiateStreaming failed", e);
-  }
-  try {
-    return await instantiateCachedURL(version, url, importObject);
-  } catch (e) {
-    console.log("instantiateCachedURL failed", e);
-  }
-  throw new Error("can't instantiate wasm");
-}
-
diff --git a/protocols/Telegram/tdlib/td/example/web/tdweb/src/worker.js b/protocols/Telegram/tdlib/td/example/web/tdweb/src/worker.js
deleted file mode 100644
index dff1845126..0000000000
--- a/protocols/Telegram/tdlib/td/example/web/tdweb/src/worker.js
+++ /dev/null
@@ -1,1034 +0,0 @@
-import localforage from 'localforage';
-import log from './logger.js';
-import { instantiateAny } from './wasm-utils.js';
-
-import td_wasm_release from './prebuilt/release/td_wasm.wasm';
-import td_asmjs_mem_release from './prebuilt/release/td_asmjs.js.mem';
-
-const tdlibVersion = 6;
-const localForageDrivers = [
-  localforage.INDEXEDDB,
-  localforage.LOCALSTORAGE,
-  'memoryDriver'
-];
-
-async function initLocalForage() {
-  // Implement the driver here.
-  const memoryDriver = {
-    _driver: 'memoryDriver',
-    _initStorage: function(options) {
-      const dbInfo = {};
-      if (options) {
-        for (const i in options) {
-          dbInfo[i] = options[i];
-        }
-      }
-      this._dbInfo = dbInfo;
-      this._map = new Map();
-    },
-    clear: async function() {
-      this._map.clear();
-    },
-    getItem: async function(key) {
-      const value = this._map.get(key);
-      console.log('getItem', this._map, key, value);
-      return value;
-    },
-    iterate: async function(iteratorCallback) {
-      log.error('iterate is not supported');
-    },
-    key: async function(n) {
-      log.error('key n is not supported');
-    },
-    keys: async function() {
-      return this._map.keys();
-    },
-    length: async function() {
-      return this._map.size();
-    },
-    removeItem: async function(key) {
-      this._map.delete(key);
-    },
-    setItem: async function(key, value) {
-      const originalValue = this._map.get(key);
-      console.log('setItem', this._map, key, value);
-      this._map.set(key, value);
-      return originalValue;
-    }
-  };
-
-  // Add the driver to localForage.
-  localforage.defineDriver(memoryDriver);
-}
-
-async function loadTdlibWasm(onFS, wasmUrl) {
-  console.log('loadTdlibWasm');
-  const td_module = await import('./prebuilt/release/td_wasm.js');
-  const createTdwebModule = td_module.default;
-  log.info('got td_wasm.js', td_module, createTdwebModule);
-  let td_wasm = td_wasm_release;
-  if (wasmUrl) {
-    td_wasm = wasmUrl;
-  }
-  let module = createTdwebModule({
-    onRuntimeInitialized: () => {
-      log.info('runtime intialized');
-      onFS(module.FS);
-    },
-    instantiateWasm: (imports, successCallback) => {
-      log.info('start instantiateWasm', td_wasm, imports);
-      const next = instance => {
-        log.info('finish instantiateWasm');
-        successCallback(instance);
-      };
-      instantiateAny(tdlibVersion, td_wasm, imports).then(next);
-      return {};
-    },
-    ENVIROMENT: 'WORKER'
-  });
-  log.info('Wait module');
-  module = await module;
-  log.info('Got module', module);
-  //onFS(module.FS);
-  return module;
-}
-
-async function loadTdlibAsmjs(onFS) {
-  console.log('loadTdlibAsmjs');
-  const createTdwebModule = (await import('./prebuilt/release/td_asmjs.js'))
-    .default;
-  console.log('got td_asm.js', createTdwebModule);
-  const fromFile = 'td_asmjs.js.mem';
-  const toFile = td_asmjs_mem_release;
-  let module = createTdwebModule({
-    onRuntimeInitialized: () => {
-      console.log('runtime intialized');
-      onFS(module.FS);
-    },
-    locateFile: name => {
-      if (name === fromFile) {
-        return toFile;
-      }
-      return name;
-    },
-    ENVIROMENT: 'WORKER'
-  });
-  log.info('Wait module');
-  module = await module;
-  log.info('Got module', module);
-  //onFS(module.FS);
-  return module;
-}
-
-async function loadTdlib(mode, onFS, wasmUrl) {
-  const wasmSupported = (() => {
-    try {
-      if (
-        typeof WebAssembly === 'object' &&
-        typeof WebAssembly.instantiate === 'function'
-      ) {
-        const module = new WebAssembly.Module(
-          Uint8Array.of(0x0, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00)
-        );
-        if (module instanceof WebAssembly.Module)
-          return (
-            new WebAssembly.Instance(module) instanceof WebAssembly.Instance
-          );
-      }
-    } catch (e) {}
-    return false;
-  })();
-  if (!wasmSupported) {
-    if (mode === 'wasm') {
-      log.error('WebAssembly is not supported, trying to use it anyway');
-    } else {
-      log.warn('WebAssembly is not supported, trying to use asm.js');
-      mode = 'asmjs';
-    }
-  }
-
-  if (mode === 'asmjs') {
-    return loadTdlibAsmjs(onFS);
-  }
-  return loadTdlibWasm(onFS, wasmUrl);
-}
-
-class OutboundFileSystem {
-  constructor(root, FS) {
-    this.root = root;
-    this.nextFileId = 0;
-    this.FS = FS;
-    this.files = new Set();
-    FS.mkdir(root);
-  }
-  blobToPath(blob, name) {
-    const dir = this.root + '/' + this.nextFileId;
-    if (!name) {
-      name = 'blob';
-    }
-    this.nextFileId++;
-    this.FS.mkdir(dir);
-    this.FS.mount(
-      this.FS.filesystems.WORKERFS,
-      {
-        blobs: [{ name: name, data: blob }]
-      },
-      dir
-    );
-    const path = dir + '/' + name;
-    this.files.add(path);
-    return path;
-  }
-
-  forgetPath(path) {
-    if (this.files.has(path)) {
-      this.FS.unmount(path);
-      this.files.delete(path);
-    }
-  }
-}
-
-class InboundFileSystem {
-  static async create(dbName, root, FS_promise) {
-    const start = performance.now();
-    try {
-      const ifs = new InboundFileSystem();
-      ifs.pending = [];
-      ifs.pendingHasTimeout = false;
-      ifs.persistCount = 0;
-      ifs.persistSize = 0;
-      ifs.pendingI = 0;
-      ifs.inPersist = false;
-      ifs.totalCount = 0;
-
-      ifs.root = root;
-
-      //ifs.store = localforage.createInstance({
-      //name: dbName,
-      //driver: localForageDrivers
-      //});
-      log.debug('IDB name: ' + dbName);
-      ifs.idb = new Promise((resolve, reject) => {
-        const request = indexedDB.open(dbName);
-        request.onsuccess = () => resolve(request.result);
-        request.onerror = () => reject(request.error);
-        request.onupgradeneeded = () => {
-          request.result.createObjectStore('keyvaluepairs');
-        };
-      });
-
-      ifs.load_pids();
-
-      const FS = await FS_promise;
-      await ifs.idb;
-      ifs.FS = FS;
-      ifs.FS.mkdir(root);
-      const create_time = (performance.now() - start) / 1000;
-      log.debug('InboundFileSystem::create ' + create_time);
-      return ifs;
-    } catch (e) {
-      log.error('Failed to init Inbound FileSystem: ', e);
-    }
-  }
-
-  async load_pids() {
-    const keys_start = performance.now();
-    log.debug('InboundFileSystem::create::keys start');
-    //const keys = await this.store.keys();
-
-    let idb = await this.idb;
-    let read = idb
-      .transaction(['keyvaluepairs'], 'readonly')
-      .objectStore('keyvaluepairs');
-    const keys = await new Promise((resolve, reject) => {
-      const request = read.getAllKeys();
-      request.onsuccess = () => resolve(request.result);
-      request.onerror = () => reject(request.error);
-    });
-
-    const keys_time = (performance.now() - keys_start) / 1000;
-    log.debug(
-      'InboundFileSystem::create::keys ' + keys_time + ' ' + keys.length
-    );
-    this.pids = new Set(keys);
-  }
-
-  has(pid) {
-    if (!this.pids) {
-      return true;
-    }
-
-    return this.pids.has(pid);
-  }
-
-  forget(pid) {
-    if (this.pids) {
-      this.pids.delete(pid);
-    }
-  }
-
-  async doPersist(pid, path, arr, resolve, reject, write) {
-    this.persistCount++;
-    let size = arr.length;
-    this.persistSize += size;
-    try {
-      //log.debug('persist.do start', pid, path, arr.length);
-      //await this.store.setItem(pid, new Blob([arr]));
-      await new Promise((resolve, reject) => {
-        const request = write.put(new Blob([arr]), pid);
-        request.onsuccess = () => resolve(request.result);
-        request.onerror = () => reject(request.error);
-      });
-      if (this.pids) {
-        this.pids.add(pid);
-      }
-      this.FS.unlink(path);
-    } catch (e) {
-      log.error('Failed persist ' + path + ' ', e);
-    }
-    //log.debug('persist.do finish', pid, path, arr.length);
-    this.persistCount--;
-    this.persistSize -= size;
-    resolve();
-
-    this.tryFinishPersist();
-  }
-
-  async flushPersist() {
-    if (this.inPersist) {
-      return;
-    }
-    log.debug('persist.flush');
-    this.inPersist = true;
-    let idb = await this.idb;
-    this.writeBegin = performance.now();
-    let write = idb
-      .transaction(['keyvaluepairs'], 'readwrite')
-      .objectStore('keyvaluepairs');
-    while (
-      this.pendingI < this.pending.length &&
-      this.persistCount < 20 &&
-      this.persistSize < 50 << 20
-    ) {
-      var q = this.pending[this.pendingI];
-      this.pending[this.pendingI] = null;
-      // TODO: add to transaction
-      this.doPersist(q.pid, q.path, q.arr, q.resolve, q.reject, write);
-      this.pendingI++;
-      this.totalCount++;
-    }
-    log.debug(
-      'persist.flush transaction cnt=' +
-        this.persistCount +
-        ', size=' +
-        this.persistSize
-    );
-    this.inPersist = false;
-    this.tryFinishPersist();
-  }
-
-  async tryFinishPersist() {
-    if (this.inPersist) {
-      return;
-    }
-    if (this.persistCount !== 0) {
-      return;
-    }
-    log.debug('persist.finish ' + (performance.now() - this.writeBegin) / 1000);
-    if (this.pendingI === this.pending.length) {
-      this.pending = [];
-      this.pendingHasTimeout = false;
-      this.pendingI = 0;
-      log.debug('persist.finish done');
-      return;
-    }
-    log.debug('persist.finish continue');
-    this.flushPersist();
-  }
-
-  async persist(pid, path, arr) {
-    if (!this.pendingHasTimeout) {
-      this.pendingHasTimeout = true;
-      log.debug('persist set timeout');
-      setTimeout(() => {
-        this.flushPersist();
-      }, 1);
-    }
-    await new Promise((resolve, reject) => {
-      this.pending.push({
-        pid: pid,
-        path: path,
-        arr: arr,
-        resolve: resolve,
-        reject: reject
-      });
-    });
-  }
-
-  async unlink(pid) {
-    log.debug('Unlink ' + pid);
-    try {
-      this.forget(pid);
-      //await this.store.removeItem(pid);
-      let idb = await this.idb;
-      await new Promise((resolve, reject) => {
-        let write = idb
-          .transaction(['keyvaluepairs'], 'readwrite')
-          .objectStore('keyvaluepairs');
-        const request = write.delete(pid);
-        request.onsuccess = () => resolve(request.result);
-        request.onerror = () => reject(request.error);
-      });
-    } catch (e) {
-      log.error('Failed unlink ' + pid + ' ', e);
-    }
-  }
-}
-
-class DbFileSystem {
-  static async create(root, FS_promise, readOnly = false) {
-    const start = performance.now();
-    try {
-      const dbfs = new DbFileSystem();
-      dbfs.root = root;
-      const FS = await FS_promise;
-      dbfs.FS = FS;
-      dbfs.syncfs_total_time = 0;
-      dbfs.readOnly = readOnly;
-      dbfs.syncActive = 0;
-      FS.mkdir(root);
-      FS.mount(FS.filesystems.IDBFS, {}, root);
-
-      await new Promise((resolve, reject) => {
-        FS.syncfs(true, err => {
-          resolve();
-        });
-      });
-
-      const rmrf = path => {
-        log.debug('rmrf ', path);
-        let info;
-        try {
-          info = FS.lookupPath(path);
-        } catch (e) {
-          return;
-        }
-        log.debug('rmrf ', path, info);
-        if (info.node.isFolder) {
-          for (const key in info.node.contents) {
-            rmrf(info.path + '/' + info.node.contents[key].name);
-          }
-          log.debug('rmdir ', path);
-          FS.rmdir(path);
-        } else {
-          log.debug('unlink ', path);
-          FS.unlink(path);
-        }
-      };
-      //const dirs = ['thumbnails', 'profile_photos', 'secret', 'stickers', 'temp', 'wallpapers', 'secret_thumbnails', 'passport'];
-      const dirs = [];
-      const root_dir = FS.lookupPath(root);
-      for (const key in root_dir.node.contents) {
-        const value = root_dir.node.contents[key];
-        log.debug('node ', key, value);
-        if (!value.isFolder) {
-          continue;
-        }
-        dirs.push(root_dir.path + '/' + value.name);
-      }
-      for (const i in dirs) {
-        const dir = dirs[i];
-        rmrf(dir);
-        //FS.mkdir(dir);
-        //FS.mount(FS.filesystems.MEMFS, {}, dir);
-      }
-      dbfs.syncfsInterval = setInterval(() => {
-        dbfs.sync();
-      }, 5000);
-      const create_time = (performance.now() - start) / 1000;
-      log.debug('DbFileSystem::create ' + create_time);
-      return dbfs;
-    } catch (e) {
-      log.error('Failed to init DbFileSystem: ', e);
-    }
-  }
-  async sync(force) {
-    if (this.readOnly) {
-      return;
-    }
-    if (this.syncActive > 0 && !force) {
-      log.debug('SYNC: skip');
-      return;
-    }
-    this.syncActive++;
-    const start = performance.now();
-    await new Promise((resolve, reject) => {
-      this.FS.syncfs(false, () => {
-        const syncfs_time = (performance.now() - start) / 1000;
-        this.syncfs_total_time += syncfs_time;
-        log.debug('SYNC: ' + syncfs_time);
-        log.debug('SYNC total: ' + this.syncfs_total_time);
-        resolve();
-      });
-    });
-    this.syncActive--;
-  }
-  async close() {
-    clearInterval(this.syncfsInterval);
-    await this.sync(true);
-  }
-  async destroy() {
-    clearInterval(this.syncfsInterval);
-    if (this.readOnly) {
-      return;
-    }
-    this.FS.unmount(this.root);
-    const req = indexedDB.deleteDatabase(this.root);
-    await new Promise((resolve, reject) => {
-      req.onsuccess = function(e) {
-        log.info('SUCCESS');
-        resolve(e.result);
-      };
-      req.onerror = function(e) {
-        log.info('ONERROR');
-        reject(e.error);
-      };
-      req.onblocked = function(e) {
-        log.info('ONBLOCKED');
-        reject('blocked');
-      };
-    });
-  }
-}
-
-class TdFileSystem {
-  static async init_fs(prefix, FS_promise) {
-    const FS = await FS_promise;
-    FS.mkdir(prefix);
-    return FS;
-  }
-  static async create(instanceName, FS_promise, readOnly = false) {
-    try {
-      const tdfs = new TdFileSystem();
-      const prefix = '/' + instanceName;
-      tdfs.prefix = prefix;
-      FS_promise = TdFileSystem.init_fs(prefix, FS_promise);
-
-      //MEMFS. Store to IDB and delete files as soon as possible
-      const inboundFileSystem = InboundFileSystem.create(
-        instanceName,
-        prefix + '/inboundfs',
-        FS_promise
-      );
-
-      //IDBFS. MEMFS which is flushed to IDB from time to time
-      const dbFileSystem = DbFileSystem.create(
-        prefix + '/dbfs',
-        FS_promise,
-        readOnly
-      );
-
-      const FS = await FS_promise;
-      tdfs.FS = FS;
-
-      //WORKERFS. Temporary stores Blobs for outbound files
-      tdfs.outboundFileSystem = new OutboundFileSystem(
-        prefix + '/outboundfs',
-        tdfs.FS
-      );
-
-      tdfs.inboundFileSystem = await inboundFileSystem;
-      tdfs.dbFileSystem = await dbFileSystem;
-      return tdfs;
-    } catch (e) {
-      log.error('Failed to init TdFileSystem: ', e);
-    }
-  }
-  async destroy() {
-    await this.dbFileSystem.destroy();
-  }
-}
-
-class TdClient {
-  constructor(callback) {
-    log.info('Start worker');
-    this.pendingQueries = [];
-    this.isPending = true;
-    this.callback = callback;
-    this.wasInit = false;
-  }
-
-  async testLocalForage() {
-    await initLocalForage();
-    const DRIVERS = [
-      localforage.INDEXEDDB,
-      'memoryDriver',
-      localforage.LOCALSTORAGE,
-      localforage.WEBSQL,
-      localForageDrivers
-    ];
-    for (const driverName of DRIVERS) {
-      console.log('Test ', driverName);
-      try {
-        await localforage.setDriver(driverName);
-        console.log('A');
-        await localforage.setItem('hello', 'world');
-        console.log('B');
-        const x = await localforage.getItem('hello');
-        console.log('got ', x);
-        await localforage.clear();
-        console.log('C');
-      } catch (error) {
-        console.log('Error', error);
-      }
-    }
-  }
-
-  async init(options) {
-    if (this.wasInit) {
-      return;
-    }
-    //await this.testLocalForage();
-    log.setVerbosity(options.jsLogVerbosityLevel);
-    this.wasInit = true;
-
-    options = options || {};
-    const mode = options.mode || 'wasm';
-
-    const FS_promise = new Promise(resolve => {
-      this.onFS = resolve;
-    });
-
-    const tdfs_promise = TdFileSystem.create(
-      options.instanceName,
-      FS_promise,
-      options.readOnly
-    );
-
-    this.useDatabase = true;
-    if ('useDatabase' in options) {
-      this.useDatabase = options.useDatabase;
-    }
-
-    log.info('load TdModule');
-    this.TdModule = await loadTdlib(mode, this.onFS, options.wasmUrl);
-    log.info('got TdModule');
-    this.td_functions = {
-      td_create: this.TdModule.cwrap(
-        'td_emscripten_create_client_id',
-        'number',
-        []
-      ),
-      td_send: this.TdModule.cwrap('td_emscripten_send', null, [
-        'number',
-        'string'
-      ]),
-      td_execute: this.TdModule.cwrap('td_emscripten_execute', 'string', [
-        'string'
-      ]),
-      td_receive: this.TdModule.cwrap('td_emscripten_receive', 'string', []),
-      td_set_verbosity: verbosity => {
-        this.td_functions.td_execute(
-          JSON.stringify({
-            '@type': 'setLogVerbosityLevel',
-            new_verbosity_level: verbosity
-          })
-        );
-      },
-      td_get_timeout: this.TdModule.cwrap(
-        'td_emscripten_get_timeout',
-        'number',
-        []
-      )
-    };
-    //this.onFS(this.TdModule.FS);
-    this.FS = this.TdModule.FS;
-    this.TdModule['websocket']['on']('error', error => {
-      this.scheduleReceiveSoon();
-    });
-    this.TdModule['websocket']['on']('open', fd => {
-      this.scheduleReceiveSoon();
-    });
-    this.TdModule['websocket']['on']('listen', fd => {
-      this.scheduleReceiveSoon();
-    });
-    this.TdModule['websocket']['on']('connection', fd => {
-      this.scheduleReceiveSoon();
-    });
-    this.TdModule['websocket']['on']('message', fd => {
-      this.scheduleReceiveSoon();
-    });
-    this.TdModule['websocket']['on']('close', fd => {
-      this.scheduleReceiveSoon();
-    });
-
-    // wait till it is allowed to start
-    this.callback({ '@type': 'inited' });
-    await new Promise(resolve => {
-      this.onStart = resolve;
-    });
-    this.isStarted = true;
-
-    log.info('may start now');
-    if (this.isClosing) {
-      return;
-    }
-    log.info('FS start init');
-    this.tdfs = await tdfs_promise;
-    log.info('FS inited');
-    this.callback({ '@type': 'fsInited' });
-
-    // no async initialization after this point
-    if (options.logVerbosityLevel === undefined) {
-      options.logVerbosityLevel = 2;
-    }
-    this.td_functions.td_set_verbosity(options.logVerbosityLevel);
-    this.client_id = this.td_functions.td_create();
-
-    this.savingFiles = new Map();
-    this.send({
-      '@type': 'setOption',
-      name: 'store_all_files_in_files_directory',
-      value: {
-        '@type': 'optionValueBoolean',
-        value: true
-      }
-    });
-    this.send({
-      '@type': 'setOption',
-      name: 'language_pack_database_path',
-      value: {
-        '@type': 'optionValueString',
-        value: this.tdfs.dbFileSystem.root + '/language'
-      }
-    });
-    this.send({
-      '@type': 'setOption',
-      name: 'ignore_background_updates',
-      value: {
-        '@type': 'optionValueBoolean',
-        value: !this.useDatabase
-      }
-    });
-
-    this.flushPendingQueries();
-
-    this.receive();
-  }
-
-  prepareQueryRecursive(query) {
-    if (query['@type'] === 'inputFileBlob') {
-      return {
-        '@type': 'inputFileLocal',
-        path: this.tdfs.outboundFileSystem.blobToPath(query.data, query.name)
-      };
-    }
-    for (const key in query) {
-      const field = query[key];
-      if (field && typeof field === 'object') {
-        query[key] = this.prepareQueryRecursive(field);
-      }
-    }
-    return query;
-  }
-
-  prepareQuery(query) {
-    if (query['@type'] === 'setTdlibParameters') {
-      query.database_directory = this.tdfs.dbFileSystem.root;
-      query.files_directory = this.tdfs.inboundFileSystem.root;
-
-      const useDb = this.useDatabase;
-      query.use_file_database = useDb;
-      query.use_chat_info_database = useDb;
-      query.use_message_database = useDb;
-      query.use_secret_chats = useDb;
-    }
-    if (query['@type'] === 'getLanguagePackString') {
-      query.language_pack_database_path =
-        this.tdfs.dbFileSystem.root + '/language';
-    }
-    return this.prepareQueryRecursive(query);
-  }
-
-  onStart() {
-    //nop
-    log.info('ignore on_start');
-  }
-
-  deleteIdbKey(query) {
-    try {
-    } catch (e) {
-      this.callback({
-        '@type': 'error',
-        '@extra': query['@extra'],
-        code: 400,
-        message: e
-      });
-      return;
-    }
-    this.callback({
-      '@type': 'ok',
-      '@extra': query['@extra']
-    });
-  }
-
-  readFilePart(query) {
-    let res;
-    try {
-      //const file_size = this.FS.stat(query.path).size;
-      const stream = this.FS.open(query.path, 'r');
-      const buf = new Uint8Array(query.count);
-      this.FS.read(stream, buf, 0, query.count, query.offset);
-      this.FS.close(stream);
-      res = buf;
-    } catch (e) {
-      this.callback({
-        '@type': 'error',
-        '@extra': query['@extra'],
-        code: 400,
-        message: e.toString()
-      });
-      return;
-    }
-    this.callback(
-      {
-        '@type': 'filePart',
-        '@extra': query['@extra'],
-        data: res
-      },
-      [res.buffer]
-    );
-  }
-
-  send(query) {
-    if (this.isClosing) {
-      return;
-    }
-    if (this.wasFatalError) {
-      if (query['@type'] === 'destroy') {
-        this.destroy({ '@type': 'ok', '@extra': query['@extra'] });
-      }
-      return;
-    }
-    if (query['@type'] === 'init') {
-      this.init(query.options);
-      return;
-    }
-    if (query['@type'] === 'start') {
-      log.info('on_start');
-      this.onStart();
-      return;
-    }
-    if (query['@type'] === 'setJsLogVerbosityLevel') {
-      log.setVerbosity(query.new_verbosity_level);
-      return;
-    }
-    if (this.isPending) {
-      this.pendingQueries.push(query);
-      return;
-    }
-    if (
-      query['@type'] === 'setLogVerbosityLevel' ||
-      query['@type'] === 'getLogVerbosityLevel' ||
-      query['@type'] === 'setLogTagVerbosityLevel' ||
-      query['@type'] === 'getLogTagVerbosityLevel' ||
-      query['@type'] === 'getLogTags'
-    ) {
-      this.execute(query);
-      return;
-    }
-    if (query['@type'] === 'readFilePart') {
-      this.readFilePart(query);
-      return;
-    }
-    if (query['@type'] === 'deleteIdbKey') {
-      this.deleteIdbKey(query);
-      return;
-    }
-    query = this.prepareQuery(query);
-    this.td_functions.td_send(this.client_id, JSON.stringify(query));
-    this.scheduleReceiveSoon();
-  }
-
-  execute(query) {
-    try {
-      const res = this.td_functions.td_execute(JSON.stringify(query));
-      const response = JSON.parse(res);
-      this.callback(response);
-    } catch (error) {
-      this.onFatalError(error);
-    }
-  }
-  receive() {
-    this.cancelReceive();
-    if (this.wasFatalError) {
-      return;
-    }
-    try {
-      while (true) {
-        const msg = this.td_functions.td_receive();
-        if (!msg) {
-          break;
-        }
-        const response = this.prepareResponse(JSON.parse(msg));
-        if (
-          response['@type'] === 'updateAuthorizationState' &&
-          response.authorization_state['@type'] === 'authorizationStateClosed'
-        ) {
-          this.close(response);
-          break;
-        }
-        this.callback(response);
-      }
-
-      this.scheduleReceive();
-    } catch (error) {
-      this.onFatalError(error);
-    }
-  }
-
-  cancelReceive() {
-    if (this.receiveTimeout) {
-      clearTimeout(this.receiveTimeout);
-      delete this.receiveTimeout;
-    }
-    delete this.receiveSoon;
-  }
-  scheduleReceiveSoon() {
-    if (this.receiveSoon) {
-      return;
-    }
-    this.cancelReceive();
-    this.receiveSoon = true;
-    this.scheduleReceiveIn(0.001);
-  }
-  scheduleReceive() {
-    if (this.receiveSoon) {
-      return;
-    }
-    this.cancelReceive();
-    const timeout = this.td_functions.td_get_timeout();
-    this.scheduleReceiveIn(timeout);
-  }
-  scheduleReceiveIn(timeout) {
-    //return;
-    log.debug('Scheduler receive in ' + timeout + 's');
-    this.receiveTimeout = setTimeout(() => this.receive(), timeout * 1000);
-  }
-
-  onFatalError(error) {
-    this.wasFatalError = true;
-    this.asyncOnFatalError(error);
-  }
-
-  async close(last_update) {
-    // close db and cancell all timers
-    this.isClosing = true;
-    if (this.isStarted) {
-      log.debug('close worker: start');
-      await this.tdfs.dbFileSystem.close();
-      this.cancelReceive();
-      log.debug('close worker: finish');
-    }
-    this.callback(last_update);
-  }
-
-  async destroy(result) {
-    try {
-      log.info('destroy tdfs ...');
-      await this.tdfs.destroy();
-      log.info('destroy tdfs ok');
-    } catch (e) {
-      log.error('Failed destroy', e);
-    }
-    this.callback(result);
-    this.callback({
-      '@type': 'updateAuthorizationState',
-      authorization_state: {
-        '@type': 'authorizationStateClosed'
-      }
-    });
-  }
-
-  async asyncOnFatalError(error) {
-    await this.tdfs.dbFileSystem.sync();
-    this.callback({ '@type': 'updateFatalError', error: error });
-  }
-
-  saveFile(pid, file) {
-    const isSaving = this.savingFiles.has(pid);
-    this.savingFiles.set(pid, file);
-    if (isSaving) {
-      return file;
-    }
-    try {
-      const arr = this.FS.readFile(file.local.path);
-      if (arr) {
-        file = Object.assign({}, file);
-        file.arr = arr;
-        this.doSaveFile(pid, file, arr);
-      }
-    } catch (e) {
-      log.error('Failed to readFile: ', e);
-    }
-    return file;
-  }
-
-  async doSaveFile(pid, file, arr) {
-    await this.tdfs.inboundFileSystem.persist(pid, file.local.path, arr);
-    file = this.savingFiles.get(pid);
-    file.idb_key = pid;
-    this.callback({ '@type': 'updateFile', file: file });
-
-    this.savingFiles.delete(pid);
-  }
-
-  prepareFile(file) {
-    const pid = file.remote.unique_id ? file.remote.unique_id : file.remote.id;
-    if (!pid) {
-      return file;
-    }
-
-    if (file.local.is_downloading_active) {
-      this.tdfs.inboundFileSystem.forget(pid);
-    } else if (this.tdfs.inboundFileSystem.has(pid)) {
-      file.idb_key = pid;
-      return file;
-    }
-
-    if (file.local.is_downloading_completed) {
-      file = this.saveFile(pid, file);
-    }
-    return file;
-  }
-
-  prepareResponse(response) {
-    if (response['@type'] === 'file') {
-      return this.prepareFile(response);
-    }
-    for (const key in response) {
-      const field = response[key];
-      if (field && typeof field === 'object') {
-        response[key] = this.prepareResponse(field);
-      }
-    }
-    return response;
-  }
-
-  flushPendingQueries() {
-    this.isPending = false;
-    for (const query of this.pendingQueries) {
-      this.send(query);
-    }
-  }
-}
-
-const client = new TdClient((e, t = []) => postMessage(e, t));
-
-onmessage = function(e) {
-  try {
-    client.send(e.data);
-  } catch (error) {
-    client.onFatalError(error);
-  }
-};