Nodejs upgrade

.node-version

@@ -1 +1 @@
-6.14.4
+8.16.0

README.md

@@ -1,7 +1,7 @@
 # Webpacker
 
 [![Build Status](https://travis-ci.org/rails/webpacker.svg?branch=master)](https://travis-ci.org/rails/webpacker)
-[![node.js](https://img.shields.io/badge/node-%3E%3D%206.14.0-brightgreen.svg)](https://nodejs.org/en/)
+[![node.js](https://img.shields.io/badge/node-%3E%3D%208.16.0-brightgreen.svg)](https://nodejs.org/en/)
 [![Gem](https://img.shields.io/gem/v/webpacker.svg)](https://github.com/rails/webpacker)
 
 Webpacker makes it easy to use the JavaScript pre-processor and bundler
@@ -52,7 +52,7 @@ in which case you may not even need the asset pipeline. This is mostly relevant
 
 * Ruby 2.2+
 * Rails 4.2+
-* Node.js 6.14.4+
+* Node.js 8.16.0+
 * Yarn 1.x+
 
 

package.json

@@ -8,7 +8,7 @@
     "lib/install/config/webpacker.yml"
   ],
   "engines": {
-    "node": ">=6.14.4",
+    "node": ">=8.16.0",
     "yarn": ">=1.0.0"
   },
   "dependencies": {