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This test proves the ability of TransformStream to execute to execute caller supplied code in the transform callback that can transform incoming chunks, and have access to TransformStreamDefaultController.
22 lines
655 B
HTML
22 lines
655 B
HTML
<script src="../include.js"></script>
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<script>
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test(() => {
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const {writable, readable} = new TransformStream({
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transform(chunk, controller) {
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controller.enqueue(chunk.toUpperCase());
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}
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});
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const writer = writable.getWriter();
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writer.write("Hello, world!");
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writer.close();
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const reader = readable.getReader();
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reader.read().then(function processText({done, value}) {
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println(`Done: ${done}`);
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if (done)
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return;
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println(value);
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reader.read().then(processText);
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});
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});
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</script>
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