I have a package that targets Node and the browser but not isomorphically—I have a Node-specific script and a browser-specific script. I wish to bundle each of these in CJS and ES6 formats. How may I do this? Seems like jsnext:browser is required:

"main": "dist/node/index.js",
"jsnext:main": "dist/node/index.es2015.js",
"browser": "dist/browser/index.js",
"jsnext:browser": "dist/browser/index.es2015.js"