Using RegExp replace loop in isHidden

[Jiasm]

I think RegExp will faster than loop.

[3imed-jaberi]

LGTM 🚀, this my nano suggestion !!

function isHidden (root, path) {
  const hiddenFileReg = new RegExp(`${sep}\\.`)
  path = path.substr(root.length)

  return hiddenFileReg.test(path)
}

[Jiasm]

@3imed-jaberi sep is a constant, so i define hiddenFileReg in module scope.😄

[niftylettuce]

I'm reverting this. Generally RegExp is unsafe in JavaScript, and for loops are incredibly fast.

Without a performance test nor benchmark, I cannot merge this. Sorry for the accident merge.