How to use infer-owner - 2 common examples

function fixOwnerSync (cache, filepath) {
  if (!process.getuid) {
    // This platform doesn't need ownership fixing
    return
  }
  const { uid, gid } = inferOwner.sync(cache)
  getSelf()
  if (self.uid !== 0) {
    // almost certainly can't chown anyway
    return
  }

  if (self.uid === uid && self.gid === gid) {
    // No need to override if it's already what we used.
    return
  }
  try {
    chownr.sync(
      filepath,
      typeof uid === 'number' ? uid : self.uid,
      typeof gid === 'number' ? gid : self.gid
    )

function mkdirfixSync (cache, p) {
  try {
    inferOwner.sync(cache)
    const made = mkdirp.sync(p)
    if (made) {
      fixOwnerSync(cache, made)
      return made
    }
  } catch (err) {
    if (err.code === 'EEXIST') {
      fixOwnerSync(cache, p)
      return null
    } else {
      throw err
    }
  }
}