Working locally with Vue in a Special page I'm coming across a PHP warning for the following Vue single file component template:
<my-component :weight="renderMode !== 'overlay-summary' && 'bold'"></my-component>
Yields
2022-12-06 12:52:40 wmf2988 my_wiki: [9e75698f5d3a47379783db55] /w/load.php?lang=en&modules=%40wikimedia%2Fcodex%2Cjquery%2Coojs-ui-core%2Coojs-ui-widgets%2Cvue%7Cext.growthExperiments.Homepage.NewImpact%2CSuggestedEdits%7Coojs-ui.styles.icons-editing-advanced&skin=vector-2022&version=17nqj PHP Warning: Wikimedia\RemexHtml\DOM\DOMBuilder::createNode(): unterminated entity reference & 'bold' #0 /Users/sergio/src/mediawiki/w/vendor/wikimedia/remex-html/src/DOM/DOMBuilder.php(241): MWExceptionHandler::handleError(integer, string, string, integer, array) #1 /Users/sergio/src/mediawiki/w/vendor/wikimedia/remex-html/src/DOM/DOMBuilder.php(321): Wikimedia\RemexHtml\DOM\DOMBuilder->createNode(Wikimedia\RemexHtml\TreeBuilder\Element) #2 /Users/sergio/src/mediawiki/w/vendor/wikimedia/remex-html/src/TreeBuilder/TreeBuilder.php(277): Wikimedia\RemexHtml\DOM\DOMBuilder->insertElement(integer, Wikimedia\RemexHtml\TreeBuilder\Element, Wikimedia\RemexHtml\TreeBuilder\Element, boolean, integer, integer) #3 /Users/sergio/src/mediawiki/w/vendor/wikimedia/remex-html/src/TreeBuilder/TreeBuilder.php(257): Wikimedia\RemexHtml\TreeBuilder\TreeBuilder->insertForeign(string, string, Wikimedia\RemexHtml\Tokenizer\LazyAttributes, boolean, integer, integer) #4 /Users/sergio/src/mediawiki/w/vendor/wikimedia/remex-html/src/TreeBuilder/InBody.php(456): Wikimedia\RemexHtml\TreeBuilder\TreeBuilder->insertElement(string, Wikimedia\RemexHtml\Tokenizer\LazyAttributes, boolean, integer, integer) #5 /Users/sergio/src/mediawiki/w/vendor/wikimedia/remex-html/src/TreeBuilder/Dispatcher.php(420): Wikimedia\RemexHtml\TreeBuilder\InBody->startTag(string, Wikimedia\RemexHtml\Tokenizer\LazyAttributes, boolean, integer, integer) #6 /Users/sergio/src/mediawiki/w/vendor/wikimedia/remex-html/src/Tokenizer/Tokenizer.php(1479): Wikimedia\RemexHtml\TreeBuilder\Dispatcher->startTag(string, Wikimedia\RemexHtml\Tokenizer\LazyAttributes, boolean, integer, integer) #7 /Users/sergio/src/mediawiki/w/vendor/wikimedia/remex-html/src/Tokenizer/Tokenizer.php(595): Wikimedia\RemexHtml\Tokenizer\Tokenizer->handleAttribsAndClose(integer, string, boolean, integer) #8 /Users/sergio/src/mediawiki/w/vendor/wikimedia/remex-html/src/Tokenizer/Tokenizer.php(369): Wikimedia\RemexHtml\Tokenizer\Tokenizer->dataState(boolean) #9 /Users/sergio/src/mediawiki/w/vendor/wikimedia/remex-html/src/Tokenizer/Tokenizer.php(178): Wikimedia\RemexHtml\Tokenizer\Tokenizer->executeInternal(boolean) #10 /Users/sergio/src/mediawiki/w/includes/ResourceLoader/VueComponentParser.php(110): Wikimedia\RemexHtml\Tokenizer\Tokenizer->execute() #11 /Users/sergio/src/mediawiki/w/includes/ResourceLoader/VueComponentParser.php(66): MediaWiki\ResourceLoader\VueComponentParser->parseHTML(string) #12 /Users/sergio/src/mediawiki/w/includes/ResourceLoader/FileModule.php(1372): MediaWiki\ResourceLoader\VueComponentParser->parse(string, array) #13 /Users/sergio/src/mediawiki/w/includes/ResourceLoader/FileModule.php(341): MediaWiki\ResourceLoader\FileModule->getPackageFiles(MediaWiki\ResourceLoader\Context) #14 /Users/sergio/src/mediawiki/w/includes/ResourceLoader/Module.php(817): MediaWiki\ResourceLoader\FileModule->getScript(MediaWiki\ResourceLoader\Context) #15 /Users/sergio/src/mediawiki/w/includes/ResourceLoader/Module.php(786): MediaWiki\ResourceLoader\Module->buildContent(MediaWiki\ResourceLoader\Context) #16 /Users/sergio/src/mediawiki/w/includes/ResourceLoader/ResourceLoader.php(1109): MediaWiki\ResourceLoader\Module->getModuleContent(MediaWiki\ResourceLoader\Context) #17 /Users/sergio/src/mediawiki/w/includes/ResourceLoader/ResourceLoader.php(811): MediaWiki\ResourceLoader\ResourceLoader->makeModuleResponse(MediaWiki\ResourceLoader\Context, array, array) #18 /Users/sergio/src/mediawiki/w/load.php(53): MediaWiki\ResourceLoader\ResourceLoader->respond(MediaWiki\ResourceLoader\Context) #19 /Users/sergio/src/mediawiki/w/load.php(39): wfLoadMain() #20 {main}
The prop :weight="renderMode !== 'overlay-summary' && 'bold'" can be moved to a computed property to get rid of the warning but I wonder what is producing the error since the expression passed to the prop seems fine.