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define(['./_Symbol'], function(Symbol) {
  /** Used as a safe reference for `undefined` in pre-ES5 environments. */  var undefined;
  /** Used for built-in method references. */  var objectProto = Object.prototype;
  /** Used to check objects for own properties. */  var hasOwnProperty = objectProto.hasOwnProperty;
  /**   * Used to resolve the   * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)   * of values.   */  var nativeObjectToString = objectProto.toString;
  /** Built-in value references. */  var symToStringTag = Symbol ? Symbol.toStringTag : undefined;
  /**   * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.   *   * @private   * @param {*} value The value to query.   * @returns {string} Returns the raw `toStringTag`.   */  function getRawTag(value) {    var isOwn = hasOwnProperty.call(value, symToStringTag),        tag = value[symToStringTag];
    try {      value[symToStringTag] = undefined;      var unmasked = true;    } catch (e) {}
    var result = nativeObjectToString.call(value);    if (unmasked) {      if (isOwn) {        value[symToStringTag] = tag;      } else {        delete value[symToStringTag];      }    }    return result;  }
  return getRawTag;});