Node 9 support

.travis.yml

@@ -16,13 +16,19 @@ jobs:
       after_success: npm run-script coverage;
     - stage: platform-test
       node_js: "node"
-      os: osx    
+      os: osx
     - stage: platform-test
       node_js: "7"
       os: linux
     - stage: platform-test
       node_js: "7"
       os: osx
+    - stage: platform-test
+      node_js: "lts/carbon"
+      os: linux
+    - stage: platform-test
+      node_js: "lts/carbon"
+      os: osx
     - stage: platform-test
       node_js: "lts/boron"
       os: linux

appveyor.yml

@@ -49,6 +49,9 @@
       - nodejs_version: 8
         GYP_MSVS_VERSION: 2015
         APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      - nodejs_version: 9
+        GYP_MSVS_VERSION: 2015
+        APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
 
   install:
     - ps: Install-Product node $env:nodejs_version $env:platform
@@ -127,6 +130,9 @@
       - nodejs_version: 8
         GYP_MSVS_VERSION: 2015
         APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
+      - nodejs_version: 9
+        GYP_MSVS_VERSION: 2015
+        APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
 
   install:
     - ps: Install-Product node $env:nodejs_version $env:platform

lib/extensions.js

@@ -72,8 +72,8 @@ function getHumanNodeVersion(abi) {
     case 50: return 'Electron 1.4.x';
     case 51: return 'Node.js 7.x';
     case 53: return 'Electron 1.6.x';
-    case 55: return 'Node.js 8.x';
     case 57: return 'Node.js 8.x';
+    case 59: return 'Node.js 9.x';
     default: return false;
   }
 }