public static function pum_vars( $vars = array() ) {

		/**
		 * If a form was submitted via non-ajax methods this checks if a successful submission was reported.
		 */
		if ( isset( self::$form_success ) && ! empty( self::$form_success['popup_id'] ) ) {
			self::$form_success['settings'] = wp_parse_args( self::$form_success['settings'], array(
				'openpopup'        => false,
				'openpopup_id'     => 0,
				'closepopup'       => false,
				'closedelay'       => 0,
				'redirect_enabled' => false,
				'redirect'         => '',
				'cookie'           => false,
			) );

			if ( is_array( self::$form_success['settings']['cookie'] ) ) {
				self::$form_success['settings']['cookie'] = wp_parse_args( self::$form_success['settings']['cookie'], array(
					'name'    => 'pum-' . self::$form_success['popup_id'],
					'expires' => '+1 year',
				) );
			}

			$vars['form_success'] = self::$form_success;
		}

		if ( ! empty( self::$form_submission ) ) {
			// Remap values from PHP underscore_case to JS camelCase
			$vars['form_submission'] = PUM_Utils_Array::remap_keys( self::$form_submission, [
				'form_provider'    => 'formProvider',
				'form_id'          => 'formId',
				'form_instance_id' => 'formInstanceId',
				'popup_id'         => 'popupId',
			] );
		}

		return $vars;
	}