text: const fs = require('fs');
  const config = require('./common/config');
  const MongoClient = require('mongodb').MongoClient;
  const mongoClient = new MongoClient(config.mongo_server, {useNewUrlParser: true});
  
  mongoClient.connect(function (err, client) {
      const db = client.db(config.mongo_database);
      const bibleCollection = db.collection('bible');
      const wordsCollection = db.collection('words');
      bibleCollection.drop(function (err, delOK) {
          wordsCollection.drop(function (err, delOK) {
              process.exit(0);
          });
      });
  });
  
  