Drupal Config

Should you run into the situation where you need to reset the module config to the installation state (for what ever reasons), then this snippet might help you: \Drupal::service('config.installer')->installDefaultConfig('module', $module)

When working with entity types, view-modes, fields and configuration in modules, you'll surely run into the situation that you have to add new configuration (from the config/install directory) .yml's into the active configuration in update