prevent-back/dist/prevent-back.js

Prevent vistor go back to previous page

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
  typeof define === 'function' && define.amd ? define(['exports'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.preventBack = {}));
}(this, (function (exports) { 'use strict';

  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);
  }

  exports['default'] = preventBack;
  exports.leave = leave;
  exports.stay = stay;

  Object.defineProperty(exports, '__esModule', { value: true });

})));