Using babel-eslint as parser for esnext

esnext.js

@@ -1,6 +1,10 @@
 'use strict';
 var def = require('./');
 
+def.parser = 'babel-eslint';
+
+def.plugins = ['babel'];
+
 def.ecmaFeatures = {
 	arrowFunctions: true,
 	binaryLiterals: true,
@@ -29,11 +33,18 @@ def.ecmaFeatures = {
 
 def.env.es6 = true;
 def.rules['no-var'] = 2;
-def.rules['object-shorthand'] = [2, 'always'];
 def.rules['prefer-arrow-callback'] = 2;
 def.rules['prefer-const'] = 2;
 def.rules['prefer-reflect'] = [2, {exceptions: ['delete']}];
 def.rules['prefer-template'] = 2;
 def.rules['prefer-spread'] = 2;
+def.rules['babel/object-shorthand'] = [2, 'always'];
+def.rules['babel/generator-star-spacing'] = def.rules['generator-star-spacing'];
+def.rules['babel/arrow-parens'] = def.rules['arrow-parens'];
+def.rules['babel/object-curly-spacing'] = def.rules['object-curly-spacing'];
+def.rules['object-shorthand'] = 0;
+def.rules['generator-star-spacing'] = 0;
+def.rules['arrow-parens'] = 0;
+def.rules['object-curly-spacing'] = 0;
 
 module.exports = def;

package.json

@@ -53,7 +53,9 @@
     "clear-require": "^1.0.1",
     "eslint": "^1.3.0",
     "is-plain-obj": "^1.0.0",
-    "temp-write": "^1.1.2"
+    "temp-write": "^1.1.2",
+    "babel-eslint": "^4.1.0",
+    "eslint-plugin-babel": "^2.1.1"
   },
   "peerDependencies": {
     "eslint": ">=1.3.0"

readme.md

@@ -11,6 +11,14 @@ This is for advanced users. You probably want to use XO directly.
 $ npm install --save-dev eslint-config-xo
 ```
 
+For the `esnext` version you'll also need Babel's ESLint [parser](https://github.com/babel/babel-eslint) and [plugin](https://github.com/babel/eslint-plugin-babel):
+
+```
+$ npm install --save-dev babel-eslint eslint-plugin-babel
+```
+
+This will let you use ES7/ES2016 features like [`async`/`await`](https://github.com/lukehoban/ecmascript-asyncawait) and [decorators](https://github.com/wycats/javascript-decorators). For a full list of features see [Babel's experimental features](https://babeljs.io/docs/usage/experimental/) and their [Learn ES2015](https://babeljs.io/docs/learn-es2015/).
+
 
 ## Usage
 
@@ -33,7 +41,7 @@ Or to `.eslintrc`:
 }
 ```
 
-This package also exposes [`xo/esnext`](esnext.js) if you want ES2015 support and rules:
+This package also exposes [`xo/esnext`](esnext.js) if you want ES2015+ support and rules:
 
 ```json
 {

test/test.js

@@ -5,6 +5,10 @@ var eslint = require('eslint');
 var tempWrite = require('temp-write');
 var clearRequire = require('clear-require');
 
+function clearRequires() {
+	['./', './esnext', './browser'].map(clearRequire);
+}
+
 function runEslint(str, conf) {
 	var linter = new eslint.CLIEngine({
 		useEslintrc: false,
@@ -15,7 +19,7 @@ function runEslint(str, conf) {
 }
 
 test('main', function (t) {
-	clearRequire.all();
+	clearRequires();
 	var conf = require('../');
 
 	t.true(isPlainObj(conf));
@@ -30,7 +34,7 @@ test('main', function (t) {
 });
 
 test('esnext', function (t) {
-	clearRequire.all();
+	clearRequires();
 	var conf = require('../esnext');
 
 	t.true(isPlainObj(conf));
@@ -43,8 +47,23 @@ test('esnext', function (t) {
 	t.end();
 });
 
+test('esnext es2016', function (t) {
+	clearRequires();
+
+	var conf = require('../esnext');
+
+	t.true(isPlainObj(conf));
+	t.true(isPlainObj(conf.env));
+	t.true(isPlainObj(conf.rules));
+
+	var errors = runEslint('const x = {a: 0};\nasync function z() {\n\treturn Promise.resolve({b: 1, ...x});\n}\n', conf);
+	t.is(errors[0].ruleId, 'no-unused-vars');
+
+	t.end();
+});
+
 test('browser', function (t) {
-	clearRequire.all();
+	clearRequires();
 	var conf = require('../browser');
 
 	t.true(isPlainObj(conf));