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chromium/third_party/blink/web_tests/inspector-protocol/debugger/resources/debugger-basic-page.html 

<!DOCTYPE html>
<html>
<head>
    <script>
        function test() {
            return null;
        }
        var num = 5;
        var obj = {a: 3};
        var bool = true;
    </script>
</head>
</html>