From d9c99d3f950bbade1ef30efa269084be4dda3818 Mon Sep 17 00:00:00 2001
From: Boopathi Rajaa <boopathi@users.noreply.github.com>
Date: Wed, 20 Dec 2017 09:31:49 +0100
Subject: [PATCH] Remove node 4. Add node 9 (#767)

Decision made in #766
---
 .babelrc     | 2 +-
 .travis.yml  | 2 +-
 README.md    | 2 +-
 appveyor.yml | 2 +-
 package.json | 6 +++++-
 5 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/.babelrc b/.babelrc
index 47125d57a..395dd7cf3 100644
--- a/.babelrc
+++ b/.babelrc
@@ -4,7 +4,7 @@
       "env",
       {
         "targets": {
-          "node": 4
+          "node": 6
         },
         "include": ["transform-async-to-generator"],
         "exclude": ["transform-regenerator"]
diff --git a/.travis.yml b/.travis.yml
index 507171b88..f643f9f0d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,9 +5,9 @@ language: node_js
 cache: yarn
 
 node_js:
+  - '9'
   - '8'
   - '6'
-  - '4'
 
 before_install:
   - curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version 1.3.2
diff --git a/README.md b/README.md
index 0b47a452b..a9e14afb8 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ Babili has been now renamed to Babel-Minify :).
 
 ## Requirements
 
-- node >= 4
+- node >= 6
 - babel >= 6.20.0
 
 ## Why
diff --git a/appveyor.yml b/appveyor.yml
index cebb9a0d9..7143c62f9 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -3,9 +3,9 @@ init:
 
 environment:
   matrix:
+    - nodejs_version: '9'
     - nodejs_version: '8'
     - nodejs_version: '6'
-    - nodejs_version: '4'
 
 cache:
  - "%LOCALAPPDATA%\\Yarn"
diff --git a/package.json b/package.json
index 3d3e193cb..e145eccad 100644
--- a/package.json
+++ b/package.json
@@ -1,4 +1,5 @@
 {
+  "private": true,
   "license": "MIT",
   "author": "amasad",
   "scripts": {
@@ -52,7 +53,10 @@
     "uglify-js": "^3.0.27",
     "util.promisify": "^1.0.0"
   },
-  "private": true,
+  "engines": {
+    "node": ">=6",
+    "yarn": ">=1"
+  },
   "jest": {
     "transform": {
       ".*": "<rootDir>/node_modules/babel-jest"