Function evalOpts

src/flow.js:1556–1563

* If option is a function, evaluate it with given params * @param {*} data * @param {...} args arguments of a callback * @returns {*}

(data, args)

   * @returns {*}
   */
  function evalOpts(data, args) {
    if (typeof data === "function") {
      // `arguments` is an object, not array, in FF, so:
      args = Array.prototype.slice.call(arguments);
      data = data.apply(null, args.slice(1));
    }
    return data;
  }
  Flow.evalOpts = evalOpts;

  /**