Remove backwards-incompatible babel-preset-env.

Author: paulmillr

README.md

@@ -1,79 +1,74 @@
-babel-brunch
-===========
+## babel-brunch
+
 Brunch plugin using [babel](https://github.com/babel/babel) to turn latest
 ECMAScript standard code into vanilla ES5 with no runtime required.
 
 All the `.js` files in your project will be run through the babel compiler,
 except those it is configured to ignore, unless you use the `pattern` option.
 
-Additionally, starting Brunch 2.7.3, babel-brunch will also compile NPM dependencies.
+Additionally, starting Brunch 2.7, babel-brunch will also compile NPM dependencies.
+
+## Installation
 
-Installation
-------------
 `npm install --save-dev babel-brunch`
 
-Usage
------
+## Configuration
 
-- **No configuration is required by default.** `es2015` and `es2016` presets are included.
-- To add **React** preset:
-    - Execute `npm install --save-dev babel-preset-react`, then adjust the `presets` option in `brunch-config.js`:
-    - `plugins: {babel: {presets: ['es2015', 'es2016', 'react']}}`
-- Default behavior is to handle `js` files which are not dependencies and `jsx` files if you enable React preset.
-- To specify preset options: `{presets: [['transform-es2015-template-literals', { spec: true }]]}`
+[babel-preset-latest](https://babeljs.io/docs/plugins/preset-latest/) (es2015, es2016, es2017) **is used by default**, you don't need to adjust config to have it.
 
-Configuration
--------------
+### Using React; or any other plugin
 
-Set [babel options](https://babeljs.io/docs/usage/options) in your brunch
-config (such as `brunch-config.js`) except for `filename` and `sourceMap`
-which are handled internally.
+Install a plugin:
 
-This plugin uses, by default,
-[babel-preset-env](https://github.com/babel/babel-preset-env/).
-To configure, use `env` option:
+```
+npm insall --save-dev babel-preset-react
+```
+
+Then, make sure Brunch sees it:
 
-```js
-plugins: {
+```javascript
+exports.plugins = {
   babel: {
-    env: {
-      targets: {
-        safari: 7, // explicitly
-        browsers: '>2%' // with browserslist query
-      }
-    }
+    presets: ['latest', 'react']
   }
 }
 ```
-Without providing any options, behavior will be like using [babel-preset-latest](https://babeljs.io/docs/plugins/preset-latest/) (es2015, es2016, es2017).
 
-To use no preset, set the configuration option to an empty array.
+Optionally, you can configure the preset:
+
+`presets: [ 'latest', ['transform-es2015-template-literals', {spec: true}] ]`
 
-Additionally, you can set an `ignore` value to specify which `.js` files in
-your project should not be compiled by babel. By default, `ignore` is set to
-`/^(bower_components|vendor)/`.
 
-You can also set `pattern` to a regular expression that will match the file
-paths you want compiled by babel, which will override the standard behavior of
-compiling every `.js` file.
+### Ignoring node modules
 
-```js
-plugins: {
+```
+exports.plugins = {
   babel: {
-    presets: ['es2015', 'es2016', 'react'], // es2015, es2016 are defaults
     ignore: [
-      /^(bower_components|vendor)/,
+      /^node_modules/,
       'app/legacyES5Code/**/*'
-    ],
-    pattern: /\.(es6|jsx)$/ // js and jsx are defaults.
+    ]
+  }
+}
+```
+
+### Changing which files would be compiled by babel
+
+```
+exports.plugins = {
+  babel: {
+    pattern: /\.es7$/ // By default, JS|JSX|ES6 are used.
   }
 }
 ```
 
-Change Log
-----------
+Set [babel options](https://babeljs.io/docs/usage/options) in your brunch
+config (such as `brunch-config.js`) except for `filename` and `sourceMap`
+which are handled internally.
+
+## Change Log
 [See release notes page on GitHub](https://github.com/babel/babel-brunch/releases)
 
-License
--------
+## License
+
 [ISC](https://raw.github.com/babel/babel-brunch/master/LICENSE)

index.js

@@ -39,7 +39,8 @@ class BabelCompiler {
 
     opts.sourceMap = !!config.sourceMaps;
     if (!opts.presets) {
-      opts.presets = [['env', opts.env]];
+      opts.presets = ['latest'];
+      // ['env', opts.env]
     }
     if (!opts.plugins) opts.plugins = [];
 

package.json

@@ -30,13 +30,12 @@
   "dependencies": {
     "anymatch": "^1.0.0",
     "babel-core": "^6.0.0",
-    "babel-preset-env": "^1.1.8",
+    "babel-preset-latest": "^6.22.0",
     "loggy": "~1.0.1"
   },
   "devDependencies": {
     "babel-plugin-transform-es2015-template-literals": "^6.8.0",
     "babel-plugin-transform-node-env-inline": "^6.1.18",
-    "babel-preset-es2015": "^6.22.0",
     "mocha": "^2.0.0",
     "eslint": "^2.0.0"
   }