react-planner-viewer/es/plugins/autosave.js

react-planner-viewer is a React Component for view plans builded with react-planner in 2D mode

var localStorage = window.hasOwnProperty('localStorage') ? window.localStorage : false;
import { loadProject } from '../actions/project-actions';

var TIMEOUT_DELAY = 500;

var timeout = null;

export default function autosave(autosaveKey, delay) {

  return function (store, stateExtractor) {

    delay = delay || TIMEOUT_DELAY;

    if (!autosaveKey) return;
    if (!localStorage) return;

    //revert
    if (localStorage.getItem(autosaveKey) !== null) {
      var data = localStorage.getItem(autosaveKey);
      var json = JSON.parse(data);
      store.dispatch(loadProject(json));
    }

    //update
    store.subscribe(function () {
      if (timeout) clearTimeout(timeout);
      timeout = setTimeout(function () {

        var state = stateExtractor(store.getState());

        var scene = state.sceneHistory.last();
        var json = JSON.stringify(scene.toJS());
        localStorage.setItem(autosaveKey, json);
      }, delay);
    });
  };
}
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