Update deps (node-fetch#320)

Author: TimothyGu

package.json

@@ -39,21 +39,21 @@
     "babel-preset-env": "^1.1.10",
     "babel-register": "^6.16.3",
     "chai": "^3.5.0",
-    "chai-as-promised": "^6.0.0",
+    "chai-as-promised": "^7.1.1",
     "chai-iterator": "^1.1.1",
     "chai-string": "^1.3.0",
-    "codecov": "^1.0.1",
-    "cross-env": "^3.1.4",
+    "codecov": "^2.2.0",
+    "cross-env": "^5.0.1",
     "form-data": ">=1.0.0",
     "mocha": "^3.1.2",
-    "nyc": "^10.0.0",
+    "nyc": "^11.1.0",
     "parted": "^0.1.1",
-    "promise": "^7.1.1",
+    "promise": "^8.0.1",
     "resumer": "0.0.0",
-    "rollup": "^0.41.4",
+    "rollup": "^0.45.2",
     "rollup-plugin-babel": "^2.6.1",
     "url-search-params": "^0.9.0",
-    "whatwg-url": "^4.0.0"
+    "whatwg-url": "^5.0.0"
   },
   "dependencies": {}
 }

test/test.js

@@ -5,16 +5,17 @@ import chaiPromised from 'chai-as-promised';
 import chaiIterator from 'chai-iterator';
 import chaiString from 'chai-string';
 import then from 'promise';
-import {spawn} from 'child_process';
-import * as stream from 'stream';
 import resumer from 'resumer';
 import FormData from 'form-data';
 import URLSearchParams_Polyfill from 'url-search-params';
-import {parse as parseURL, URLSearchParams} from 'url';
-import {URL} from 'whatwg-url';
-import * as http from 'http';
-import * as fs from 'fs';
-import * as path from 'path';
+import { URL } from 'whatwg-url';
+
+const { spawn } = require('child_process');
+const http = require('http');
+const fs = require('fs');
+const path = require('path');
+const stream = require('stream');
+const { parse: parseURL, URLSearchParams } = require('url');
 
 let convert;
 try { convert = require('encoding').convert; } catch(e) { }