use modular async

src/add-to-dagnode-transform.js

@@ -1,6 +1,6 @@
 'use strict'
 
-const async = require('async')
+const map = require('async/map')
 const getDagNode = require('./get-dagnode')
 
 // transform { Hash: '...' } objects into { path: 'string', node: DAGNode }
@@ -9,7 +9,7 @@ module.exports = function (err, res, send, done) {
     return done(err)
   }
 
-  async.map(res, function map (entry, next) {
+  map(res, function map (entry, next) {
     getDagNode(send, entry.Hash, function (err, node) {
       if (err) {
         return next(err)

src/get-dagnode.js

@@ -2,12 +2,12 @@
 
 const DAGNode = require('ipfs-merkle-dag').DAGNode
 const bl = require('bl')
-const async = require('async')
+const parallel = require('async/parallel')
 
 module.exports = function (send, hash, cb) {
   // Retrieve the object and its data in parallel, then produce a DAGNode
   // instance using this information.
-  async.parallel([
+  parallel([
     function get (done) {
       send('object/get', hash, null, null, done)
     },