ES2015ify and require Node.js 4

.gitattributes

@@ -1 +1,2 @@
 * text=auto
+*.js text eol=lf

.travis.yml

@@ -1,7 +1,5 @@
 sudo: false
 language: node_js
 node_js:
-  - '5'
+  - '6'
   - '4'
-  - '0.12'
-  - '0.10'

index.js

@@ -2,10 +2,12 @@
 module.exports = function toFastproperties(o) {
 	function Sub() {}
 	Sub.prototype = o;
-	var receiver = new Sub(); // create an instance
-	function ic() { return typeof receiver.foo; } // perform access
-	ic(); 
+	const receiver = new Sub(); // Create an instance
+	function ic() {
+		return typeof receiver.foo; // Perform access
+	}
+	ic();
 	ic();
 	return o;
-	eval("o" + o); // ensure no dead code elimination
-}
+	eval('o' + o); // Ensure no dead code elimination
+};

package.json

@@ -10,7 +10,7 @@
     "url": "sindresorhus.com"
   },
   "engines": {
-    "node": ">=0.10.0"
+    "node": ">=4"
   },
   "scripts": {
     "test": "node --allow-natives-syntax test.js"

test.js

@@ -1,16 +1,17 @@
 'use strict';
-var test = require('ava');
-var toFastProperties = require('./');
+const test = require('ava');
+const toFastProperties = require('.');
 
-var toSlowProperties = function (obj) {
-	for (var i = 0; i < 1000; ++i) {
-		obj['foo' + i] = 'foo';
+const toSlowProperties = obj => {
+	for (let i = 0; i < 1000; i++) {
+		obj[`foo${i}`] = 'foo';
 	}
+
 	return obj;
 };
 
-test(function (t) {
-	var obj = toSlowProperties({});
+test(t => {
+	const obj = toSlowProperties({});
 	obj.foo = 'foo';
 	t.assert(!%HasFastProperties(obj), 'obj has slow properties');