How to read keystrokes from stdin with Node.js?

To read keystrokes from stdin with Node.js, we can listen for keypresses with raw mode.

For instance, we write

const stdin = process.openStdin();
require("tty").setRawMode(true);

stdin.on("keypress", (chunk, key) => {
  process.stdout.write("Get Chunk: " + chunk + "\n");
  if (key && key.ctrl && key.name === "c") {
    process.exit();
  }
});

to set raw mode to true with setRawMode.

We open stdin with openStdin.

And we listen for the keypresses by calling on with 'keypress'.

We get the key pressed with key.