function sort(arr) {
  var res = arr.slice();
  res.sort();
  return res;
}
### Utility functions

  Utility functions are exposed (and documented) only to make contributions to jsverify more easy.
  The changes here don't follow semver, i.e. there might be backward-incompatible changes even in patch releases.

  Use [underscore.js](http://underscorejs.org/), [lodash](https://lodash.com/), [ramda](http://ramda.github.io/ramdocs/docs/), [lazy.js](http://danieltao.com/lazy.js/) or some other utility belt.