create-broadcast-app/packages/react-scripts/node_modules/semver/functions/prerelease.js

Create a NextGen TV broadcast app with one command

const parse = require('./parse')
const prerelease = (version, options) => {
  const parsed = parse(version, options)
  return (parsed && parsed.prerelease.length) ? parsed.prerelease : null
}
module.exports = prerelease