const fs = require('fs')
const Path = require('path')

function mkdirs(path, p) {
  if (p === undefined) {
    p = path.length
    path = Path.resolve(path)
  }
  try {
    fs.mkdirSync(path)
  } catch (err) {
    if (err.code === 'EEXIST') { return }
    if (err.code !== 'ENOENT') { throw err }
    p = path.lastIndexOf('/', p)
    if (p == -1 || p == 0) {
      throw new Error('unable to create root directory')
    }
    mkdirs(path.substr(0, p), p)
    try {
      fs.mkdirSync(path)
    } catch (err) {
      // in case another process won the race
      if (err.code !== 'EEXIST') { throw err }
    }
  }
}