import readline from "readline";

let initialized = false;

export function initKeypress() {
  if (!initialized) {
    readline.emitKeypressEvents(process.stdin);
    initialized = true;
  }
  process.stdin.removeAllListeners("keypress");
  if (process.stdin.isTTY) {
    process.stdin.setRawMode(true);
  }
}

export function onKey(handler) {
  process.stdin.on("keypress", handler);
}