Add rollup for bundling

.babelrc

@@ -1,4 +1,34 @@
 {
-  "plugins": ["transform-runtime", "transform-object-rest-spread"],
-  "presets": ["env"]
-}
+  "presets": [
+    [
+      "env", {
+        "modules": false,
+        "useBuiltIns": true,
+        "targets": {
+          "node": "8"
+        }
+      }
+    ]
+  ],
+  "plugins": [
+    "transform-object-rest-spread"
+  ],
+
+  "env": {
+
+    "test": {
+      "presets": [
+        [
+          "env", {
+            "modules": "commonjs",
+            "useBuiltIns": true,
+            "targets": {
+              "node": "current"
+            }
+          }
+        ]
+      ]
+    }
+
+  }
+}

.eslintrc

@@ -1,17 +1,16 @@
 {
-  "parser": "babel-eslint",
   "plugins": [
-    "babel",
     "prettier"
   ],
   "env": {
     "browser": true,
     "es6": true
   },
   "parserOptions": {
+    "ecmaVersion": 2017,
+    "sourceType": "module",
     "ecmaFeatures": {
-      "experimentalObjectRestSpread": true,
-      "modules": true
+      "experimentalObjectRestSpread": true
     }
   },
   "root": true,

.gitignore

@@ -1,5 +1,8 @@
 node_modules
 *.log
 lib
+umd
+es
 coverage
 .idea
+.DS_Store

.size-limit

@@ -0,0 +1,12 @@
+[
+  {
+    "name": "CJS",
+    "path": "lib/index.js",
+    "limit": "4 KB"
+  },
+  {
+    "name": "UMD",
+    "path": "umd/index.js",
+    "limit": "4 KB"
+  }
+]

.travis.yml

@@ -1,8 +1,6 @@
 language: node_js
 node_js:
-  - "node"
   - "lts/*"
-  - "6"
 cache:
   directories:
     - "node_modules"

CONTRIBUTING.md

@@ -0,0 +1,17 @@
+## Prerequisites
+
+[Node.js](http://nodejs.org/) >= v8 must be installed.
+
+## Installation
+
+- Running `npm install` in the module's root directory will install everything you need for development.
+
+## Running Tests
+
+- `npm test` will run the tests once.
+
+## Building
+
+- `npm run build` will build the module.
+
+- `npm run clean` will delete built resources.