text: var isObject = require('./isObject');
  
  /** `Object#toString` result references. */
  var funcTag = '[object Function]',
      genTag = '[object GeneratorFunction]',
      proxyTag = '[object Proxy]';
  
  /** Used for built-in method references. */
  var objectProto = Object.prototype;
  
  /**
   * Used to resolve the
   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
   * of values.
   */
  var objectToString = objectProto.toString;
  
  /**
   * Checks if `value` is classified as a `Function` object.
   *
   * @static
   * @memberOf _
   * @since 0.1.0
   * @category Lang
   * @param {*} value The value to check.
   * @returns {boolean} Returns `true` if `value` is a function, else `false`.
   * @example
   *
   * _.isFunction(_);
   * // => true
   *
   * _.isFunction(/abc/);
   * // => false
   */
  function isFunction(value) {
    // The use of `Object#toString` avoids issues with the `typeof` operator
    // in Safari 8-9 which returns 'object' for typed array and other constructors.
    var tag = isObject(value) ? objectToString.call(value) : '';
    return tag == funcTag || tag == genTag || tag == proxyTag;
  }
  
  module.exports = isFunction;
  