Add both esm as a build target

.babelrc.js

@@ -4,4 +4,16 @@ module.exports = {
     "@babel/preset-typescript",
     "@babel/preset-react",
   ],
+  env: {
+    esm: {
+      presets: [
+        [
+          "@babel/env",
+          {
+            modules: false,
+          },
+        ],
+      ],
+    },
+  },
 };

README.md

@@ -8,6 +8,7 @@ Simplify the creation of Storybook addons
 - 🏷 Plugin metadata
 - 🚢 Release management with [Auto](https://github.com/intuit/auto)
 - 🧺 Boilerplate and sample code
+- 🛄 ESM support
 
 ## Getting Started
 
@@ -18,13 +19,13 @@ Click the **Use this template** button to get started.
 Clone your repository and install dependencies.
 
 ```sh
-npm install
+yarn
 ```
 
 ### Development scripts
 
-- `npm run start` runs babel in watch mode and starts Storybook
-- `npm run build` build and package your addon code
+- `yarn start` runs babel in watch mode and starts Storybook
+- `yarn build` build and package your addon code
 
 ## What's included?
 
@@ -95,7 +96,7 @@ Go to `Settings > Secrets`, click `New repository secret`, and add your `NPM_TOK
 To create a release locally you can run the following command, otherwise the GitHub action will make the release for you.
 
 ```sh
-npm run release
+yarn release
 ```
 
 That will: