a boilerplate for nom packages - for compile ES6 to ES5

npm install --save-dev babel-cli@6 babel-preset-es2015@6 

create a script for build the package:

"scripts":{
  "build": "babel src --presets babel-preset-es2015 --out-dir dist"
}

change main to "./dist/index.js" ~ or whatever other main file name you have

create a folder ./src/ and add your .js files to this directory

npm run build

npm publish