Create babel-preset-backpack. Closes #17 (#40)

* Create babel-preset-backpack. Closes #17

* Fix test-only plugins

Author: jaredpalmer

packages/babel-preset-backpack/README.md

@@ -0,0 +1,23 @@
+# babel-preset-backpack
+
+This package includes the [Babel](https://babeljs.io) preset used by [Backpack](https://github/com/palmerhq/backpack)
+
+## Usage in Backpack Projects
+
+The easiest way to use this configuration is with Backpack, which includes it by default. **You don’t need to install it separately in Backpack projects.**
+
+## Usage Outside of Backpack
+
+If you want to use this Babel preset in a project not built with Backpack, you can install it with following steps.
+
+First, [install Babel](https://babeljs.io/docs/setup/).
+
+Then create a file named `.babelrc` with following contents in the root folder of your project:
+
+  ```js
+  {
+    "presets": ["backpack"]
+  }
+  ```
+
+This preset uses the `useBuiltIns` option with [transform-object-rest-spread](http://babeljs.io/docs/plugins/transform-object-rest-spread/), which assumes that `Object.assign` is available or polyfilled.

packages/babel-preset-backpack/index.js

@@ -0,0 +1,57 @@
+const path = require('path')
+
+const preset = {
+  presets: [
+    [require('babel-preset-env').default, {
+      target: {
+        node: 'current'
+      },
+      // Webpack takes care of modules, so we don't have to.
+      modules: false
+    }]
+  ],
+  plugins: [
+    // class { handleThing = () => { } }
+    require.resolve('babel-plugin-transform-class-properties'),
+
+    // The following two plugins use Object.assign directly, instead of Babel's
+    // extends helper. Note that this assumes `Object.assign` is available.
+    // { ...todo, completed: true }
+    [require.resolve('babel-plugin-transform-object-rest-spread'), {
+      useBuiltIns: true
+    }],
+
+    [require.resolve('babel-plugin-transform-regenerator'), {
+      // Async functions are converted to generators by babel-preset-env (which
+      // is based on babel-preset-latest)
+      async: false
+    }],
+
+
+    // This is so we don't need to add `babel-polyfill` to our webpack `entry`.
+    // Unlike `babel-polyfill`, `babel-runtime` + the transform do not pollute
+    // the global namespace. Yay.
+    // @see https://medium.com/@jcse/clearing-up-the-babel-6-ecosystem-c7678a314bf3#.7j10g8yn0
+    [require.resolve('babel-plugin-transform-runtime'), {
+      helpers: false,
+      polyfill: false,
+      regenerator: true,
+      // Resolve the Babel runtime relative to the config.
+      moduleName: path.dirname(require.resolve('babel-runtime/package'))
+    }]
+  ]
+}
+
+if (process.env.NODE_ENV === 'test' || process.env.BABEL_ENV === 'test') {
+  preset.plugins.push.apply(preset.plugins, [
+    // We always include this plugin regardless of environment
+    // because of a Babel bug that breaks object rest/spread without it:
+    // https://github.com/babel/babel/issues/4851
+    require.resolve('babel-plugin-transform-es2015-parameters'),
+    
+    // Jest needs this to work properly with import/export syntax
+    [require.resolve('babel-plugin-transform-es2015-modules-commonjs'), {loose: true}]
+  ])
+}
+
+module.exports = preset

packages/babel-preset-backpack/package.json

@@ -0,0 +1,31 @@
+{
+  "name": "babel-preset-backpack",
+  "version": "0.0.8",
+  "description": "Babel preset for Backpack projects",
+  "repository": "palmerhq/backpack",
+  "author": "jaredpalmer",
+  "license": "MIT",
+  "homepage": "https://github.com/palmerhq/backpack#readme",
+  "bugs": {
+    "url": "https://github.com/palmerhq/backpack/issues"
+  },
+  "files": [
+    "index.js"
+  ],
+  "dependencies": {
+    "babel-plugin-transform-class-properties": "^6.19.0",
+    "babel-plugin-transform-es2015-modules-commonjs": "^6.18.0",
+    "babel-plugin-transform-es2015-parameters": "^6.21.0",
+    "babel-plugin-transform-object-rest-spread": "^6.20.2",
+    "babel-plugin-transform-regenerator": "^6.22.0",
+    "babel-plugin-transform-runtime": "^6.15.0",
+    "babel-preset-env": "^1.1.4",
+    "babel-runtime": "^6.22.0"
+  },
+  "keywords": [
+    "babel",
+    "es6",
+    "node",
+    "backpack"
+  ]
+}

packages/backpack-core/babel.js

@@ -1,47 +1 @@
-const path = require('path')
-
-const preset = {
-  presets: [
-    [require('babel-preset-env').default, {
-      'target': {
-        'node': 'current'
-      },
-      "modules": false
-    }]
-  ],
-  plugins: [
-    // class { handleThing = () => { } }
-    require.resolve('babel-plugin-transform-class-properties'),
-
-    // async => (..)
-    require.resolve('babel-plugin-transform-async-to-generator'),
-
-    // The following two plugins use Object.assign directly, instead of Babel's
-    // extends helper. Note that this assumes `Object.assign` is available.
-    // { ...todo, completed: true }
-    [require.resolve('babel-plugin-transform-object-rest-spread'), {
-      useBuiltIns: true
-    }],
-
-    [require.resolve('babel-plugin-transform-runtime'), {
-      helpers: false,
-      polyfill: false,
-      regenerator: true,
-      // Resolve the Babel runtime relative to the config.
-      moduleName: path.dirname(require.resolve('babel-runtime/package'))
-    }]
-  ]
-}
-
-if (process.env.NODE_ENV || process.env.BABEL_ENV === 'test') {
-  preset.plugins.push.apply(preset.plugins, [
-    // We always include this plugin regardless of environment
-    // because of a Babel bug that breaks object rest/spread without it:
-    // https://github.com/babel/babel/issues/4851
-    require.resolve('babel-plugin-transform-es2015-parameters'),
-    // Jest needs this to work properly with import/export syntax
-    require.resolve('babel-plugin-transform-es2015-modules-commonjs')
-  ])
-}
-
-module.exports = preset
+module.exports = require('babel-preset-backpack')

packages/backpack-core/package.json

@@ -12,15 +12,9 @@
     "backpack": "./bin/backpack"
   },
   "dependencies": {
-    "babel-core": "^6.21.0",
+    "babel-core": "^6.22.0",
     "babel-loader": "^6.2.10",
-    "babel-plugin-transform-async-to-generator": "^6.16.0",
-    "babel-plugin-transform-class-properties": "^6.19.0",
-    "babel-plugin-transform-es2015-modules-commonjs": "^6.18.0",
-    "babel-plugin-transform-es2015-parameters": "^6.21.0",
-    "babel-plugin-transform-object-rest-spread": "^6.20.2",
-    "babel-plugin-transform-runtime": "^6.15.0",
-    "babel-preset-env": "^1.1.4",
+    "babel-preset-backpack": "0.0.8",
     "chokidar": "^1.6.1",
     "cross-spawn": "^5.0.1",
     "friendly-errors-webpack-plugin": "^1.1.2",