fix: #572

package.json

@@ -34,7 +34,7 @@
     "ipfs-unixfs": "~0.1.12",
     "ipld-dag-pb": "~0.11.0",
     "is-ipfs": "^0.3.0",
-    "isstream": "^0.1.2",
+    "is-stream": "^1.1.0",
     "lru-cache": "^4.1.1",
     "multiaddr": "^2.3.0",
     "multihashes": "~0.4.5",
@@ -134,4 +134,4 @@
     "url": "https://github.com/ipfs/js-ipfs-api/issues"
   },
   "homepage": "https://github.com/ipfs/js-ipfs-api"
-}
+}

src/files/add.js

@@ -1,13 +1,13 @@
 'use strict'
 
-const isStream = require('isstream')
+const isStream = require('is-stream')
 const promisify = require('promisify-es6')
 const DAGNodeStream = require('../utils/dagnode-stream')
 
 module.exports = (send) => {
   return promisify((files, callback) => {
     const ok = Buffer.isBuffer(files) ||
-               isStream.isReadable(files) ||
+               isStream.readable(files) ||
                Array.isArray(files)
 
     if (!ok) {