Add option to enable/disable automatic downgrades

Author: Clorith

admin/settings.php

@@ -11,6 +11,7 @@
 $show_deprecations = jQuery_Migrate_Helper::show_deprecated_scripts_notice();
 $public_deprecations = get_option( '_jquery_migrate_public_deprecation_logging', 'no' );
 $log_modern_deprecations = get_option( '_jquery_migrate_modern_deprecations', 'no' );
+$has_auto_downgraded = get_option( '_jquery_migrate_has_auto_downgraded', 'no' );
 ?>
 
 <h2>Settings</h2>
@@ -51,6 +52,20 @@
  </td>
  </tr>
 
+ <?php if ( 'no' === $downgraded && is_wp_version_compatible( '5.6-alpha' ) ) : ?>
+ <tr>
+ <th scope="row">
+ <?php _e( 'Automatic downgrades', 'enable-jquery-migrate-helper' ); ?>
+ </th>
+ <td>
+ <label>
+ <input name="automatic-downgrade" type="checkbox" <?php checked( ( 'no' === $has_auto_downgraded ) ); ?>>
+ <?php _e( 'Allow website visitors to trigger an automatic downgrading to legacy jQuery, when a failure is detected', 'enable-jquery-migrate-helper' ); ?>
+ </label>
+ </td>
+ </tr>
+ <?php endif; ?>
+
  <?php if ( 'no' === $downgraded && is_wp_version_compatible( '5.6-alpha' ) ) : ?>
  <tr>
  <th scope="row">

class-jquery-migrate-helper.php

@@ -167,6 +167,12 @@ public static function admin_settings() {
  } else {
  update_option( '_jquery_migrate_modern_deprecations', 'no' );
  }
+
+ if ( isset( $_POST['automatic-downgrade'] ) ) {
+ update_option( '_jquery_migrate_has_auto_downgraded', 'no' );
+ } else {
+ update_option( '_jquery_migrate_has_auto_downgraded', 'yes' );
+ }
  }
 
 public static function site_health_check( $tests ) {