Require Node.js 6

.travis.yml

@@ -6,6 +6,5 @@ node_js:
   - '10'
   - '8'
   - '6'
-  - '4'
 after_success:
   - './node_modules/.bin/nyc report --reporter=text-lcov > coverage.lcov && ./node_modules/.bin/codecov'

appveyor.yml

@@ -1,8 +1,8 @@
 environment:
   matrix:
+    - nodejs_version: '10'
     - nodejs_version: '8'
     - nodejs_version: '6'
-    - nodejs_version: '4'
 install:
   - ps: Install-Product node $env:nodejs_version
   - npm install --global npm@latest

index.js

@@ -26,6 +26,7 @@ module.exports = (input, opts) => Promise.resolve().then(() => {
 	checkPath(input);
 	opts = Object.assign({}, defaults, opts);
 
+	// TODO: Use util.promisify when targeting Node.js 8
 	const mkdir = pify(opts.fs.mkdir);
 	const stat = pify(opts.fs.stat);
 

package.json

@@ -10,7 +10,7 @@
 		"url": "sindresorhus.com"
 	},
 	"engines": {
-		"node": ">=4"
+		"node": ">=6"
 	},
 	"scripts": {
 		"test": "xo && nyc ava"
@@ -49,6 +49,6 @@
 		"nyc": "^11.3.0",
 		"path-type": "^3.0.0",
 		"tempy": "^0.2.1",
-		"xo": "^0.20.0"
+		"xo": "*"
 	}
 }

test/async.js

@@ -75,7 +75,7 @@ test('handles null bytes in path', async t => {
 
 test.serial('handles invalid path characters', async t => {
 	// We do this to please `nyc`
-	const platform = process.platform;
+	const {platform} = process;
 	Object.defineProperty(process, 'platform', {
 		value: 'win32'
 	});