assetCollector = $assetCollector; } public function initialize(): void { // Add a tag builder, that does not html encode values, because rendering with encoding happens in AssetRenderer $this->setTagBuilder( new class () extends TagBuilder { public function addAttribute($attributeName, $attributeValue, $escapeSpecialCharacters = false): void { parent::addAttribute($attributeName, $attributeValue, false); } } ); parent::initialize(); } public function initializeArguments(): void { parent::initializeArguments(); $this->registerUniversalTagAttributes(); $this->registerTagAttribute('async', 'bool', 'Define that the script will be fetched in parallel to parsing and evaluation.', false); $this->registerTagAttribute('crossorigin', 'string', 'Define how to handle crossorigin requests.', false); $this->registerTagAttribute('defer', 'bool', 'Define that the script is meant to be executed after the document has been parsed.', false); $this->registerTagAttribute('integrity', 'string', 'Define base64-encoded cryptographic hash of the resource that allows browsers to verify what they fetch.', false); $this->registerTagAttribute('nomodule', 'bool', 'Define that the script should not be executed in browsers that support ES2015 modules.', false); $this->registerTagAttribute('nonce', 'string', 'Define a cryptographic nonce (number used once) used to whitelist inline styles in a style-src Content-Security-Policy.', false); $this->registerTagAttribute('referrerpolicy', 'string', 'Define which referrer is sent when fetching the resource.', false); $this->registerTagAttribute('src', 'string', 'Define the URI of the external resource.', false); $this->registerTagAttribute('type', 'string', 'Define the MIME type (usually \'text/javascript\').', false); $this->registerArgument('useNonce', 'bool', 'Whether to use the global nonce value', false, false); $this->registerArgument( 'identifier', 'string', 'Use this identifier within templates to only inject your JS once, even though it is added multiple times.', true ); $this->registerArgument( 'priority', 'boolean', 'Define whether the JavaScript should be put in the tag above-the-fold or somewhere in the body part.', false, false ); } public function render(): string { $identifier = (string)$this->arguments['identifier']; $attributes = $this->tag->getAttributes(); // boolean attributes shall output attr="attr" if set foreach (['async', 'defer', 'nomodule'] as $_attr) { if ($attributes[$_attr] ?? false) { $attributes[$_attr] = $_attr; } } $src = $this->tag->getAttribute('src'); unset($attributes['src']); $options = [ 'priority' => $this->arguments['priority'], ]; if (!empty($this->assetCollector)) { if ($src !== null) { $this->assetCollector->addJavaScript($identifier, $src, $attributes, $options); } else { $content = (string)$this->renderChildren(); if ($content !== '') { $this->assetCollector->addInlineJavaScript($identifier, $content, $attributes, $options); } } } return ''; } }