Make separate bundles for CommonJS/module

.babelrc

@@ -1,13 +1,23 @@
 {
     "presets": [
-        "es2015",
+        ["es2015", { "modules": false }],
         "react"
     ],
     "plugins": [
-        "add-module-exports",
         "syntax-async-functions",
         "transform-class-properties",
         "transform-object-rest-spread",
         "transform-regenerator"
-    ]
+    ],
+    "env": {
+        "CommonJS": {
+            "presets": [
+                "es2015"
+            ],
+            // For some reason this duplicate is needed
+            "plugins": [
+                "transform-class-properties"
+            ]
+        }
+    }
 }

package.json

@@ -9,7 +9,7 @@
     "src"
   ],
   "scripts": {
-    "compile": "babel ./src --out-dir ./lib",
+    "compile": "mkdir lib; babel ./src --out-file ./lib/Truncate.js && BABEL_ENV=CommonJS babel ./src --out-file ./lib/Truncate.CommonJS.js",
     "coverage": "nyc npm test && nyc report --reporter=text-lcov",
     "lint": "eslint .",
     "prepublish": "rm -rf ./lib && npm run compile",
@@ -37,7 +37,6 @@
   "devDependencies": {
     "babel-cli": "^6.23.0",
     "babel-eslint": "^7.1.1",
-    "babel-plugin-add-module-exports": "^0.2.1",
     "babel-plugin-syntax-async-functions": "^6.13.0",
     "babel-plugin-transform-async-to-generator": "^6.22.0",
     "babel-plugin-transform-class-properties": "^6.23.0",