Function promptHidden

apps/hash-api/src/setup-admin.ts:36–82

(label: string)

 * (piped/non-interactive input).
 */
const promptHidden = (label: string): Promise<string> => {
  const { stdin, stdout } = process;

  if (!stdin.isTTY) {
    return promptVisible(label);
  }

  return new Promise((resolve) => {
    stdout.write(`${label}: `);
    stdin.setRawMode(true);
    stdin.resume();
    stdin.setEncoding("utf8");

    let buffer = "";
    const onData = (char: string) => {
      const code = char.charCodeAt(0);
      // CR / LF / Ctrl+D — finish
      if (code === 13 || code === 10 || code === 4) {
        stdin.setRawMode(false);
        stdin.pause();
        stdin.off("data", onData);
        stdout.write("\n");
        resolve(buffer);
        return;
      }
      // Ctrl+C — abort
      if (code === 3) {
        stdin.setRawMode(false);
        stdin.pause();
        stdout.write("\n");
        process.exit(130);
      }
      // DEL / BS — erase last char
      if (code === 127 || code === 8) {
        if (buffer.length > 0) {
          buffer = buffer.slice(0, -1);
          stdout.write("\b \b");
        }
        return;
      }
      buffer += char;
      stdout.write("*");
    };

    stdin.on("data", onData);
  });
};

const [, , emailArg, passwordArg] = process.argv;