<script src="lib/ClassExtend.js">
<script>
function ClassFoo() {}
function ClassBar(arg) { ClassFoo.call(this, arg); }

ClassBar.extend(ClassFoo);
</script>

importScripts("lib/ClassExtend.js");

function ClassFoo() {}
function ClassBar(arg) { ClassFoo.call(this, arg); }

ClassBar.extend(ClassFoo);

var ClassExtend = require("lib/ClassExtend.js");

function ClassFoo() {}
function ClassBar(arg) { ClassFoo.call(this, arg); }

ClassBar.extend(ClassFoo);