Method initAsync

modules/core/EditSystem.js:118–150

* initAsync * Called after all core objects have been constructed. * @return {Promise} Promise resolved when this component has completed initialization

()

   * @return {Promise} Promise resolved when this component has completed initialization
   */
  initAsync() {
    if (this._initPromise) return this._initPromise;

    for (const id of this.dependencies) {
      if (!this.context.systems[id]) {
        return Promise.reject(`Cannot init:  ${this.id} requires ${id}`);
      }
    }

    this._reset();

    const storage = this.context.systems.storage;
    const prerequisites = storage.initAsync();

    return this._initPromise = prerequisites
      .then(() => {
        if (window.mocha) return;

        // Setup event handlers..
        window.addEventListener('beforeunload', e => {
          if (this._history.length > 1) {  // user did something
            e.preventDefault();
            this.saveBackup();
            return (e.returnValue = '');  // show browser prompt
          }
        });

        window.addEventListener('unload', () => this._mutex.unlock());

        // changes are restorable if Rapid is not open in another window/tab and a backup exists in localStorage
        this._canRestoreBackup = this._mutex.lock() && storage.hasItem(this._backupKey());
      });
  }


  /**