💥 Default storage type: storageFileAsync -> storageFileSync, see #16

lib/session.js

@@ -13,7 +13,7 @@ const
  * @param {String} [options.property] - Name of property in {@link https://telegraf.js.org/#/?id=context|Telegraf Context} where session object will be located `(default: 'session')`
  * @param {Object} [options.state] - Initial state of database. You can use it to pre-init database Arrays/Objects to store your own data `(default: {})`
  * @param {Function} [options.getSessionKey] - Function to get identifier for session from {@link https://telegraf.js.org/#/?id=context|Telegraf Context} (may implement it on your own)
- * @param {Object} [options.storage] - lowdb storage option for implementing your own storage read/write operations `(default: {@link LocalSession.storageFileAsync|LocalSession.storageFileAsync})`
+ * @param {Object} [options.storage] - lowdb storage option for implementing your own storage read/write operations `(default: {@link LocalSession.storageFileSync|LocalSession.storageFileSync})`
  * @param {Function} [options.storage.read] - lowdb storage read function, must return an object or a Promise
  * @param {Function} [options.storage.write] - lowdb storage write function, must return undefined or a Promise
  * @param {Object} [options.format] - lowdb storage format option for implementing your own database format for read/write operations
@@ -24,7 +24,8 @@ const
 class LocalSession {
   constructor (options = {}) {
     this.options = Object.assign({
-      storage: LocalSession.storageFileAsync,
+      // TODO: Use storageFileAsync as default with support of Promise or Promise-like initialization, see: https://git.io/fA3ZN
+      storage: LocalSession.storageFileSync,
       database: 'sessions.json',
       property: 'session',
       state: { },