internal RegExpConstructor()
: base(FunctionPrototype.ob, "RegExp", 2) {
this.originalPrototype = RegExpPrototype.ob;
RegExpPrototype._constructor = this;
this.proto = RegExpPrototype.ob;
this.arrayPrototype = ArrayPrototype.ob;
this.regex = null;
this.lastRegexMatch = null;
this.inputString = "";
this.lastInput = null;
}