mw.widgets.CategoryCapsuleItemWidget: Debug logging for "queue[title] is undefined"

Bug: T139130
Change-Id: Icd852a0b0d5cc42863965e303c410d1be50ff364

diff --git a/resources/src/mediawiki.widgets/mw.widgets.CategoryCapsuleItemWidget.js b/resources/src/mediawiki.widgets/mw.widgets.CategoryCapsuleItemWidget.js
index 0bdf02e..946823d 100644 (file)
--- a/resources/src/mediawiki.widgets/mw.widgets.CategoryCapsuleItemWidget.js
+++ b/resources/src/mediawiki.widgets/mw.widgets.CategoryCapsuleItemWidget.js
@@ -55,6 +55,10 @@
                        $.each( response.query.pages, function ( index, page ) {
                                var title = new ForeignTitle( page.title ).getPrefixedText();
                                cache.existenceCache[ title ] = !page.missing;
+                               if ( !queue[ title ] ) {
+                                       // Debugging for T139130
+                                       throw new Error( 'No queue for "' + title + '", requested "' + titles.join( '|' ) + '"' );
+                               }
                                queue[ title ].resolve( cache.existenceCache[ title ] );
                        } );
                } );