Method setState

packages/core/src/application.ts:289–296

* Transition the application to a new state and emit an event * @param state - The new state

(state: string)

   * @param state - The new state
   */
  protected setState(state: string) {
    const oldState = this._state;
    this._state = state;
    if (oldState !== state) {
      this.emit('stateChanged', {from: oldState, to: this._state});
      this.emit(state);
    }
  }

  protected async awaitState(state: string) {
    await once(this, state);