Presses of special keys are not detectable by Deno on Windows

[dd-pardal]

It is currently impossible to know when the user presses a special key in Console Window Host (the default terminal, conhost.exe) or Windows Terminal.

Here's a test script (needs --unstable because of Deno.setRaw()):

const stdinRid = Deno.stdin.rid;
if (Deno.isatty(stdinRid))
    Deno.setRaw(stdinRid, true);

(async () => {
    for await (const data of Deno.iter(Deno.stdin)) {
        if (data[0] === 0x03) // Ctrl+C
            Deno.exit();
        console.log(data);
    }
})();

This could log an escape sequence when the user presses, for example, the arrow keys (I think it does on Linux), but it logs nothing.

[apatrida]

@dd-pardal I get odd behavior from yours as well on Mac, have you tried:

if (!Deno.isatty(Deno.stdin.rid)) {
  console.log("Cannot do raw input when not tty");
  Deno.exit(-1);
}

Deno.setRaw(Deno.stdin.rid, true);

while (true) {
    const buf = new Uint8Array(512);
    const bytesRead = await Deno.read(Deno.stdin.rid, buf);
    console.log(bytesRead);
    console.log(buf);
    if (bytesRead === 1 && buf[0] === 0x03) {
        break;
    }
}

Deno.setRaw(Deno.stdin.rid, false);

[prcdpr]

Any updates on that? Is there at least some workaround?

[ebebbington]

Can reproduce the issue windows for me - arrow keys arent being logged

[denyncrawford]

Any update about this issue? seems like in 1.8.x it is not possible still

[kitsonk]

The issue is still open, which means it isn't fixed.

[x7y62]

Running into this issue as well. Is there any working progress?

[denyncrawford]

Hi @x7y62 I did this module for handling native input events, check it out if you need to solve this https://github.com/denyncrawford/deno-gkm It's in dippers but it can do the job. Hope it helps.