Function done

test/unit/static/js/mocha.js:4087–4094

(err)

  // finished
  function done(err) {
    if (self.timedOut) return;
    if (finished) return multiple(err);
    self.clearTimeout();
    self.duration = new Date - start;
    finished = true;
    fn(err);
  }

  // for .resetTimeout()
  this.callback = done;