Function getCallback

lib/web/jshint.js:5406–5410

* Gets the appropriate "callback" function. If the `_.callback` method is * customized this function returns the custom method, otherwise it returns * the `baseCallback` function. If arguments are provided the chosen function * is invoked with them and its result is returned. *

(func, thisArg, argCount)

     * @returns {Function} Returns the chosen function or its result.
     */
    function getCallback(func, thisArg, argCount) {
      var result = lodash.callback || callback;
      result = result === callback ? baseCallback : result;
      return argCount ? result(func, thisArg, argCount) : result;
    }

    /**
     * Gets metadata for `func`.