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18 lines
541 B
TypeScript
18 lines
541 B
TypeScript
Deno.setRaw(0, true);
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Deno.setRaw(0, true); // Can be called multiple times
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Deno.stdout.writeSync(new TextEncoder().encode("S"));
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const buf = new Uint8Array(3);
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for (let i = 0; i < 3; i++) {
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const nread = await Deno.stdin.read(buf);
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if (nread === Deno.EOF) {
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break;
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} else {
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const data = new TextDecoder().decode(buf.subarray(0, nread));
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Deno.stdout.writeSync(new TextEncoder().encode(data.toUpperCase()));
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}
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}
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Deno.setRaw(0, false); // restores old mode.
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Deno.setRaw(0, false); // Can be safely called multiple times
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