force-stdin-tty/lib/index.js

Force stdin to be assigned to /dev/tty

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.forceStdinTty = void 0;

var _fs = _interopRequireDefault(require("fs"));

var _tty = _interopRequireDefault(require("tty"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

var forceStdinTty = function forceStdinTty() {
  if (process.stdin.isTTY) {
    return false;
  } // Use `O_NOCTTY` to not take control of spawned processes?


  var _fs$constants = _fs["default"].constants,
      O_RDONLY = _fs$constants.O_RDONLY,
      O_NOCTTY = _fs$constants.O_NOCTTY;

  var fd = _fs["default"].openSync('/dev/tty', O_RDONLY + O_NOCTTY); // @ts-ignore: `ReadStream` in @types/node incorrectly expects an object.
  // https://github.com/DefinitelyTyped/DefinitelyTyped/pull/37174


  var stdin = new _tty["default"].ReadStream(fd); // Use `Object.defineProperty()` because `process.stdin` has no setter.
  // Taken from node.js source:
  // https://github.com/nodejs/node/blob/6271ef005eb311c819b7ab041e09f50e4155ec1e/lib/internal/bootstrap/node.js#L354-L358

  Object.defineProperty(process, 'stdin', {
    configurable: true,
    enumerable: true,
    get: function get() {
      return stdin;
    }
  });
  return true;
};

exports.forceStdinTty = forceStdinTty;