splitPath.js

/**
 * The node posix path parser implemented in ES2015
 * 
 * regex from: https://github.com/nodejs/node/blob/master/lib/path.js#L406
 *
 * @param  {String} path
 * @return {Object} result
 * 
 * let { name } = parse('/foo/bar/baz.html')
 * // => name: baz
 */

const pattern =  /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/

const splitPath = (file='') => {
  const [ _ , root='', tempDir='', base='', ext=''] = pattern.exec(file)
  const name = base.slice(0, base.length - ext.length)
  const dir = root + tempDir.slice(0, -1)
  return { name, dir, root, base, ext }
}