Upgrade to Babel 6

.babelrc

@@ -0,0 +1,3 @@
+{
+  "presets": [ "es2015", "stage-1" ]
+}

package.json

@@ -2,6 +2,12 @@
   "name": "history",
   "version": "2.0.1",
   "description": "Manage browser history with JavaScript",
+  "author": "Michael Jackson",
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/mjackson/history.git"
+  },
   "files": [
     "es6",
     "lib",
@@ -10,38 +16,30 @@
   ],
   "main": "lib/index",
   "jsnext:main": "es6/index",
-  "repository": {
-    "type": "git",
-    "url": "https://github.com/mjackson/history.git"
-  },
   "scripts": {
-    "lint": "eslint modules",
     "start": "webpack-dev-server -d --content-base ./ --history-api-fallback --inline modules/index.js",
-    "build-cjs": "rimraf lib && babel ./modules --stage 0 --loose all --plugins dev-expression -d lib --ignore '__tests__'",
-    "build-es6": "rimraf es6 && babel ./modules --stage 0 --loose all --plugins dev-expression -d es6 --blacklist=es6.modules --ignore '__tests__'",
+    "build-cjs": "rimraf lib && babel ./modules -d lib --ignore '__tests__'",
+    "build-es6": "rimraf es6 && babel ./modules -d es6 --blacklist=es6.modules --ignore '__tests__'",
     "build-umd": "NODE_ENV=production webpack modules/index.js umd/History.js",
     "build-min": "NODE_ENV=production webpack -p modules/index.js umd/History.min.js",
     "build": "node ./scripts/build.js",
     "release": "node ./scripts/release.js",
     "prepublish": "npm run build",
-    "test": "npm run lint && karma start"
+    "test": "npm run lint && karma start",
+    "lint": "eslint modules"
   },
-  "authors": [
-    "Michael Jackson"
-  ],
-  "license": "MIT",
   "dependencies": {
     "deep-equal": "^1.0.0",
     "invariant": "^2.0.0",
     "query-string": "^3.0.0",
     "warning": "^2.0.0"
   },
   "devDependencies": {
-    "babel": "^5.8.35",
-    "babel-core": "^5.8.35",
+    "babel-cli": "^6.6.5",
     "babel-eslint": "^5.0.0",
-    "babel-loader": "^5.4.0",
-    "babel-plugin-dev-expression": "^0.1.0",
+    "babel-loader": "^6.2.4",
+    "babel-preset-es2015": "^6.6.0",
+    "babel-preset-stage-1": "^6.5.0",
     "eslint": "^2.2.0",
     "eslint-config-airbnb": "^6.0.2",
     "eslint-plugin-react": "^4.1.0",

webpack.config.js

@@ -9,7 +9,7 @@ module.exports = {
 
   module: {
     loaders: [
-      { test: /\.js$/, exclude: /node_modules/, loader: 'babel?stage=0&loose=all&plugins[]=dev-expression' }
+      { test: /\.js$/, exclude: /node_modules/, loader: 'babel' }
     ]
   },