compile with rollup

.babelrc

@@ -1,3 +1,13 @@
 {
-  "presets": ["env", "react"]
+  "presets": [
+    ["env", {
+      "modules": false
+    }],
+    "react"
+  ],
+  "env": {
+    "test": {
+      "presets": ["env", "react"]
+    }
+  }
 }

.gitignore

@@ -1,2 +1,3 @@
 node_modules
 coverage
+dist

.npmignore

@@ -0,0 +1 @@
+__tests__

package.json

@@ -10,16 +10,24 @@
   ],
   "homepage": "https://github.com/en-japan-air/react-intl-formatted-duration",
   "license": "MIT",
-  "main": "index.js",
+  "main": "dist/bundle.js",
+  "module": "dist/module.js",
   "repository": {
     "type": "git",
     "url": "https://github.com/en-japan-air/react-intl-formatted-duration"
   },
+  "files": [
+    "dist",
+    "index.js",
+    "messages.js"
+  ],
   "scripts": {
+    "compile": "rollup -c rollup.config.js",
     "lint": "eslint index.js",
     "test": "jest",
     "test:coverage": "jest --coverage",
     "test:watch": "jest --watchAll",
+    "prepublish": "npm run compile",
     "posttest": "npm run lint"
   },
   "devDependencies": {
@@ -35,7 +43,9 @@
     "react": "^15.6.1",
     "react-dom": "^15.6.1",
     "react-intl": "^2.3.0",
-    "react-test-renderer": "^15.6.1"
+    "react-test-renderer": "^15.6.1",
+    "rollup": "0.43.0",
+    "rollup-plugin-babel": "2.7.1"
   },
   "peerDependencies": {
     "prop-types": ">= 15.0",

rollup.config.js

@@ -0,0 +1,15 @@
+import babel from 'rollup-plugin-babel';
+import pkg from './package.json';
+
+export default {
+  entry: 'index.js',
+  plugins: [
+    babel(),
+  ],
+  external: Object.keys(pkg.peerDependencies),
+  exports: 'named',
+  targets: [
+    { dest: 'dist/bundle.js', format: 'cjs' },
+    { dest: 'dist/module.js', format: 'es' },
+  ],
+};