feat: dev docs

Author: xgqfrms

README.md

@@ -1,6 +1,22 @@
 # how-to-use-cjs-module-as-esm-module-in-node.js
 
 > CJS => ESM
+
+## dev
+
+```sh
+# yarn
+$ yarn esm
+$ yarn cjs
+```
+
+
+```sh
+# npm
+$ npm run esm
+$ npm run cjs
+```
+
 ## demo
 
 > `ESM` usages