prevent-back/dist/prevent-back.mjs

Prevent vistor go back to previous page

var _window = window,
    document = _window.document,
    history = _window.history;
var STATE_KEY = 'isPreventState';
var USER_INTERACTION_EVENTS = ['touchstart', 'click', 'keydown', 'keyup'];

var isPreventState = function isPreventState() {
  var _history$state;

  return (_history$state = history.state) === null || _history$state === void 0 ? void 0 : _history$state[STATE_KEY];
};

function setState() {
  if (isPreventState()) {
    return;
  }

  history.pushState({
    [STATE_KEY]: true
  }, document.title);
}

function bindUserInteractionEvent() {
  var setStateByUserInteraction = function setStateByUserInteraction() {
    setState();

    if (isPreventState()) {
      for (var _i2 = 0; _i2 < USER_INTERACTION_EVENTS.length; _i2++) {
        var eventType = USER_INTERACTION_EVENTS[_i2];
        window.removeEventListener(eventType, setStateByUserInteraction);
      }
    }
  };

  for (var _i4 = 0; _i4 < USER_INTERACTION_EVENTS.length; _i4++) {
    var eventType = USER_INTERACTION_EVENTS[_i4];
    window.addEventListener(eventType, setStateByUserInteraction);
  }
}

var stay = setState;

var leave = function leave() {
  history.back();
};

function bindStateChangeEvent(onAttemptToLeave) {
  window.addEventListener('popstate', function () {
    if (isPreventState()) {
      return;
    }

    onAttemptToLeave(stay, leave);
  });
}

function preventBack(onAttemptToLeave) {
  bindUserInteractionEvent();
  bindStateChangeEvent(onAttemptToLeave);
}

export { preventBack as default, leave, stay };