index.js

function isNodeLT(tar) {
  tar = (Array.isArray(tar) ? tar : tar.split('.')).map(Number);
  let i=0, src=process.versions.node.split('.').map(Number);
  for (; i < tar.length; i++) {
    if (src[i] > tar[i]) return false;
    if (tar[i] > src[i]) return true;
  }
  return false;
}

module.exports =
  isNodeLT('8.6.0')
    ? require('./dist/index.js')
    : require('./lib/index.js');