allow stringifier to handle mongo _ids etc and other objects

    csv = require("csv")
    fs = require("fs")
    async = require("async")
    mongo = require("mongodb")
    MongoClient = require('mongodb').MongoClient
    lu = require("./postcode_areas")


    MongoClient.connect("mongodb://127.0.0.1:27017/dummy", (err, db) ->
      if(err) 
        throw err;

      instream = fs.createReadStream(__dirname + "/cqc_locations_export.csv")

      collectionName = "locations"
      collection = db.collection(collectionName)
      db.createIndex(collectionName, {city: 1, region: 1}, (err, db) ->
        queue = async.queue(collection.insert.bind(collection), 5)

        csv().from.stream(instream
        ).transform((row, index, cb) ->
          data =
            name: row[0]
            address: row[2] 
            postcode: row[3] 
            phone: row[4] 
            website: row[5] 
           
          queue.push data, (err, res) ->
            return err if err
            cb null, res[0]

        ).on("end", (count) ->
          console.log "Number of lines: " + count
        ).on "error", (error) ->
          console.log error.message
        )                                                                           
      )
          queue.push data, (err, res) ->
            return err if err
            cb null, res[0]

        ).on("end", (count) ->
          console.log "Number of lines: " + count
        ).on "error", (error) ->
          console.log error.message
        )                                                                           
      )