mongoose drop collections helper

drop_collections.js

var async = require('async')
var _ = require('underscore')

var Helpers = function(mongoose) {
  this.mongoose = mongoose || require('mongoose')

  this.dropCollections = function(callback) {
    var collections = _.keys(mongoose.connection.collections)
    async.forEach(collections, function(collectionName, done) {
      var collection = mongoose.connection.collections[collectionName]
      collection.drop(function(err) {
        if (err && err.message != 'ns not found') done(err)
        done(null)
      })
    }, callback)
  }
}

module.exports = Helpers

Wouldn't it be easier to use async.forEachOf to iterate all keys in the object instead of using underscore?

async.forEachOf(mongoose.connection.collections, function(collection, collectionName, done) {
// drop-collection-code
});

That way, you wouldn't need the underscore dependency at all