lib/index.js
function mktmpdir(prefixSuffix, tmpdir, callback, onend) {
  if ('function' == typeof prefixSuffix) {
    onend = tmpdir;
    callback = prefixSuffix;
    tmpdir = null;
    prefixSuffix = null;
  } else if ('function' == typeof tmpdir) {
    onend = callback;
    callback = tmpdir;
    tmpdir = null;
  }

  prefixSuffix = prefixSuffix || 'd';
  onend = onend || function() {};

  tmpname.create(prefixSuffix, tmpdir, function(err, path, next) {
    if (err) return callback(err);

    fs.mkdir(path, 0700, next);
  }, function(err, path) {
    if (err) return callback(err);

    callback(null, path, function(err) {
      if (!path) return onend(err);

      rimraf(path, function(_err) {
        onend(err || _err, path);
      });
    });
  });
}
function mktmpdir(prefixSuffix, tmpdir, callback, onend) {
  if ('function' == typeof prefixSuffix) {
    onend = tmpdir;
    callback = prefixSuffix;
    tmpdir = null;
    prefixSuffix = null;
  } else if ('function' == typeof tmpdir) {
    onend = callback;
    callback = tmpdir;
    tmpdir = null;
  }

  prefixSuffix = prefixSuffix || 'd';
  onend = onend || function() {};

  tmpname.create(prefixSuffix, tmpdir, function(err, path, next) {
    if (err) return callback(err);

    fs.mkdir(path, 0700, next);
  }, function(err, path) {
    if (err) return callback(err);

    callback(null, path, function(err) {
      if (!path) return onend(err);

      rimraf(path, function(_err) {
        onend(err || _err, path);
      });
    });
  });
}
Creates a temporary directory.

The directory is created with 0700 permission.
Application should not change the permission to make the temporary directory accessible from other users.

The prefix and suffix of the name of the directory is specified by
the optional first argument, <i>prefixSuffix</i>.
- If it is not specified or null, "d" is used as the prefix and no suffix is used.
- If it is a string, it is used as the prefix and no suffix is used.
- If it is an array, first element is used as the prefix and second element is used as a suffix.

mktmpdir(function(err, dir) { dir is ".../d..." });
mktmpdir('foo', function(err, dir) { dir is ".../foo..." });
mktmpdir(['foo', 'bar'], function(err, dir) { dir is ".../foo...bar" });

The directory is created under os.tmpdir() or
the optional second argument <i>tmpdir</i> if non-null value is given.

mktmpdir(function(err, dir) { dir is os.tmpdir() + "/d..." });
mktmpdir(null, '/var/tmp', function(err, dir) { dir is "/var/tmp/d..." });

If a callback is invoked,
the path of the directory and its contents are removed.

mktmpdir(function(err, dir, done) {
if (err) throw err;
// use the directory...
fs.open(dir + '/foo', 'w', function(err, fd) {
done(err);
});
}, function(err) {
// the directory has been removed.
});

If a callback is not invoked, mktmpdir doesn't remove the directory.

mktmpdir(function(err, dir) {
if (err) throw err;
// use the directory...
fs.open(dir + '/foo', 'w', function(err, fd) {
// remove the directory.
exec('rm -rf ' + dir);
});
});

@param {String|Array} prefix, or an array including prefix and suffix.
@param {String} base tmpdir
@param {Function} callback
@param {Function} onend
@api public