pr: Merge kamikazechaser/node-telegram-bot-api#feature/stickersets

src/telegram.js

@@ -1448,6 +1448,34 @@ class TelegramBot extends EventEmitter {
     return this._request('leaveChat', { form });
   }
 
+  /**
+   * Use this method to set a new group sticker set for a supergroup.
+   * @param  {Number|String} chatId Unique identifier for the target group or username of the target supergroup (in the format @supergroupusername)
+   * @param  {String} stickerSetName Name of the sticker set to be set as the group sticker set
+   * @return {Promise}
+   * @see https://core.telegram.org/bots/api#setchatstickerset
+   */
+  setChatStickerSet(chatId, stickerSetName) {
+    const form = {
+      chat_id: chatId,
+      sticker_set_name: stickerSetName
+    };
+    return this._request('setChatStickerSet', { form });
+  }
+
+  /**
+   * Use this method to delete a group sticker set from a supergroup.
+   * @param  {Number|String} chatId Unique identifier for the target group or username of the target supergroup (in the format @supergroupusername)
+   * @return {Promise}
+   * @see https://core.telegram.org/bots/api#deletechatstickerset
+   */
+  deleteChatStickerSet(chatId) {
+    const form = {
+      chat_id: chatId
+    };
+    return this._request('deleteChatStickerSet', { form });
+  }
+
   /**
    * Use this method to send a game.
    * @param  {Number|String} chatId Unique identifier for the message recipient