<script src="../include.js"></script>
<script>
    test(() => {
        let controller;
        new ReadableStream(
            {
                start(c) {
                    controller = c;
                }
            },
            new CountQueuingStrategy({ highWaterMark: 3 })
        );

        println(controller.desiredSize);
        controller.enqueue('Hello, friends!');
        println(controller.desiredSize);
        controller.enqueue('Enqueues being counted...');
        println(controller.desiredSize);
        controller.enqueue('By CountQueuingStrategy');
        println(controller.desiredSize);
        controller.enqueue('!');
        println(controller.desiredSize);
    });
</script>