zoro-cli/lib/plugins/config-nodelib/generator.js

https://github.com/vuejs/vue-cli

module.exports = ({
  api,
  rootOptions,
  Types
}) => {
  const {
    type
  } = rootOptions;
  const {
    nodelib
  } = Types;

  if (type === nodelib) {
    api.render('./template'); // process pkg main

    api.extendPackage({
      main: 'index.js'
    });
  }
};