feat(node): add support for node v10

.travis.yml

@@ -3,6 +3,7 @@ language: node_js
 node_js:
   - "6"
   - "8"
+  - "10"
 
 sudo: false
 

package.json

@@ -42,7 +42,7 @@
     ]
   },
   "engines": {
-    "node": "^6.9.0 || ^8.9.0"
+    "node": "^6.9.0 || ^8.9.0 || ^10.12.0"
   },
   "preferGlobal": true,
   "dependencies": {

test/unit/ui/pretty-stream-spec.js

@@ -32,7 +32,7 @@ describe('Unit: UI > PrettyStream', function () {
         it('passes through buffer objects without stringifying', function () {
             // Stub the prototype of the Transform class
             const writeStub = sinon.stub(streams.Transform.prototype, 'write');
-            const testBuffer = new Buffer('some test string', 'utf8');
+            const testBuffer = Buffer.from('some test string', 'utf8');
 
             const stream = new PrettyStream();
             stream.write(testBuffer, 'utf8', {callback: true});

test/unit/utils/version-from-zip-spec.js

@@ -8,10 +8,30 @@ const errors = require('../../../lib/errors');
 const modulePath = '../../../lib/utils/version-from-zip';
 
 describe('Unit: Utils > versionFromZip', function () {
+    const currentNodeVersion = process.versions.node;
+
+    before(function () {
+        Object.defineProperty(process.versions, 'node', {
+            value: '8.11.0', // CHANGE THIS WHENEVER RECOMMENDED NODE VERSION CHANGES
+            writable: true,
+            enumerable: true,
+            configurable: true
+        });
+    });
+
     beforeEach(function () {
         delete process.env.GHOST_NODE_VERSION_CHECK;
     });
 
+    after(function () {
+        Object.defineProperty(process.versions, 'node', {
+            value: currentNodeVersion,
+            writeable: false,
+            enumerable: true,
+            configurable: true
+        });
+    });
+
     it('rejects if zip file doesn\'t exist', function () {
         const existsStub = sinon.stub().returns(false);
         const versionFromZip = proxyquire(modulePath, {