mongo ConnectAsync undefined

[DeanKamali]

Hi

It seems that ConnectAsync has been depreciated, and I'm unable to run the following example.

var db = mongo.ConnectAsync('mongodb://localhost:27017/testdb');
var collection = db.then(function(db) {
  return db.collection('testcollection');
});

etl.file('test.csv')
  .pipe(etl.csv())
  .pipe(etl.collect(10))
  .pipe(etl.mongo.insert(collection));

I have tried using newer newer syntax, but getting TypeError: Cannot read property 'insert' of undefined

const fs  = require('fs')
const etl = require('etl');

const MongoClient = require("mongodb").MongoClient;

var collection;

(async() => {
    await MongoClient.connect('mongodb://127.0.0.1:3001', function (err, client) {
        if (err) throw err;

        var db = client.db('meteor');
     
        collection = db.collection("Carrier")
    }); 
})()

fs.createReadStream("ins.csv")
  // parse the csv file
  .pipe(etl.csv())
  // map `date` into a javascript date and set unique _id
  .pipe(
    etl.map(d => {
     return d
  )
  // collect 1000 records at a time for bulk-insert
  .pipe(etl.collect(10))
  .pipe(etl.mongo.insert(collection))
  .promise()
  .then(() => console.log("done"), e => console.log("error", e));

I'm seeing the following error:

node index.js
(node:97320) DeprecationWarning: current URL string parser is deprecated, and will be removed ina future version. To use the new parser, pass option { useNewUrlParser: true } to MongoClient.connect.
error TypeError: Cannot read property 'insert' of undefined
    at collection.then.collection (/Users/dck/Projects/csv-load/node_modules/etl/lib/mongo/insert.js:24:35)
    at tryCatcher (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/util.js:16:23)
    at Promise._settlePromiseFromHandler (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/promise.js:512:31)
    at Promise._settlePromise (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/promise.js:569:18)
    at Promise._settlePromiseCtx (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/promise.js:606:10)
    at _drainQueueStep (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/async.js:142:12)
    at _drainQueue (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/async.js:131:9)
    at Async._drainQueues (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/async.js:147:5)
    at Immediate.Async.drainQueues [as _onImmediate] (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/async.js:17:14)
    at processImmediate (timers.js:632:19)
Unhandled rejection TypeError: Cannot read property 'insert' of undefined
    at collection.then.collection (/Users/dck/Projects/csv-load/node_modules/etl/lib/mongo/insert.js:24:35)
    at tryCatcher (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/util.js:16:23)
    at Promise._settlePromiseFromHandler (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/promise.js:512:31)
    at Promise._settlePromise (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/promise.js:569:18)
    at Promise._settlePromiseCtx (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/promise.js:606:10)
    at _drainQueueStep (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/async.js:142:12)
    at _drainQueue (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/async.js:131:9)
    at Async._drainQueues (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/async.js:147:5)
    at Immediate.Async.drainQueues [as _onImmediate] (/Users/dck/Projects/csv-load/node_modules/bluebird/js/release/async.js:17:14)
    at processImmediate (timers.js:632:19)

Any ideas?