var output = parts.join("/")

switch (parts.length) {
  case 1: var output = `${parts[0]}`; break;
  case 2: var output = `${parts[0]}/${parts[1]}`; break;
  case 3: var output = `${parts[0]}/${parts[1]}/${parts[2]}`; break;
  case 4: var output = `${parts[0]}/${parts[1]}/${parts[2]}/${parts[3]}`; break;
  case 5: var output = `${parts[0]}/${parts[1]}/${parts[2]}/${parts[3]}/${parts[4]}`; break;
}

switch (parts.length) {
  case 5: var output = parts[0] + "/" + parts[1] + "/" + parts[2] + "/" + parts[3] + "/" + parts[4]; break;
}

if (parts.length == 0) "";
var result = parts[0];
for (var i = 1, len = parts.length; i < len; i++) {
	result += "/";
	result += parts[i];
}

if (parts.length == 0) "";
var result = parts[0];
for (var i = 1, len = parts.length; i < len; i++) {
	result += ("/" + parts[i]);
}