Timer.restart calls sleep without argument

[urbanhop]

restart calls sleep() without argument - not sure this is intended.

Timer.prototype = timer.prototype = {
    constructor: Timer,
    restart: function(callback, delay, time) {
      if (typeof callback !== "function") throw new TypeError("callback is not a function");
      time = (time == null ? now() : +time) + (delay == null ? 0 : +delay);
      if (!this._next && taskTail !== this) {
        if (taskTail) taskTail._next = this;
        else taskHead = this;
        taskTail = this;
      }
      this._call = callback;
      this._time = time;
      sleep(); // <<<<<<<<<<<<<<<<<<<<<<<<<< sleep(this._time) ????
    },

[mbostock]

This is intentional. It means to sleep for the smallest possible amount.