React Octicons!

lib/octicons_react/package.json

@@ -5,9 +5,11 @@
   "homepage": "https://octicons.github.com",
   "author": "GitHub, Inc.",
   "license": "MIT",
-  "main": "index.js",
+  "main": "build/index.js",
+  "module": "index.js",
   "repository": "primer/octicons",
   "files": [
+    "build",
     "icons",
     "index.js",
     "pages"
@@ -20,7 +22,8 @@
     "test": "jest",
     "start": "next",
     "lint": "eslint index.js __tests__ script",
-    "build": "script/build.js",
+    "prebuild": "script/build.js",
+    "build": "rollup -c rollup.config.js",
     "preversion": "npm run build -s",
     "publish": "../../script/notify success",
     "prepublishOnly": "../../script/notify pending",
@@ -49,7 +52,10 @@
     "octicons": "7.2.0",
     "react": "^16.4.0",
     "react-dom": "^16.4.1",
-    "react-test-renderer": "^16.4.1"
+    "react-test-renderer": "^16.4.1",
+    "rollup": "^0.62.0",
+    "rollup-plugin-babel": "^3.0.5",
+    "rollup-plugin-commonjs": "^9.1.3"
   },
   "peerDependencies": {
     "react": ">=15"

lib/octicons_react/rollup.config.js

@@ -0,0 +1,18 @@
+import babel from 'rollup-plugin-babel'
+import commonjs from 'rollup-plugin-commonjs'
+
+export default {
+  input: 'index.js',
+  plugins: [
+    babel({
+      babelrc: false,
+      exclude: 'node_modules/**',
+      presets: [['env', {modules: false}], 'react']
+    }),
+    commonjs()
+  ],
+  output: {
+    file: 'build/index.js',
+    format: 'esm'
+  }
+}