--- a/wp/wp-includes/class-wp-script-modules.php Fri Sep 05 18:40:08 2025 +0200
+++ b/wp/wp-includes/class-wp-script-modules.php Fri Sep 05 18:52:52 2025 +0200
@@ -31,6 +31,17 @@
private $enqueued_before_registered = array();
/**
+ * Tracks whether the @wordpress/a11y script module is available.
+ *
+ * Some additional HTML is required on the page for the module to work. Track
+ * whether it's available to print at the appropriate time.
+ *
+ * @since 6.7.0
+ * @var bool
+ */
+ private $a11y_available = false;
+
+ /**
* Registers the script module if no script module with that script module
* identifier has already been registered.
*
@@ -182,6 +193,11 @@
add_action( 'admin_print_footer_scripts', array( $this, 'print_import_map' ) );
add_action( 'admin_print_footer_scripts', array( $this, 'print_enqueued_script_modules' ) );
add_action( 'admin_print_footer_scripts', array( $this, 'print_script_module_preloads' ) );
+
+ add_action( 'wp_footer', array( $this, 'print_script_module_data' ) );
+ add_action( 'admin_print_footer_scripts', array( $this, 'print_script_module_data' ) );
+ add_action( 'wp_footer', array( $this, 'print_a11y_script_module_html' ), 20 );
+ add_action( 'admin_print_footer_scripts', array( $this, 'print_a11y_script_module_html' ), 20 );
}
/**
@@ -227,26 +243,10 @@
* Prints the import map using a script tag with a type="importmap" attribute.
*
* @since 6.5.0
- *
- * @global WP_Scripts $wp_scripts The WP_Scripts object for printing the polyfill.
*/
public function print_import_map() {
$import_map = $this->get_import_map();
if ( ! empty( $import_map['imports'] ) ) {
- global $wp_scripts;
- if ( isset( $wp_scripts ) ) {
- wp_print_inline_script_tag(
- wp_get_script_polyfill(
- $wp_scripts,
- array(
- 'HTMLScriptElement.supports && HTMLScriptElement.supports("importmap")' => 'wp-polyfill-importmap',
- )
- ),
- array(
- 'id' => 'wp-load-polyfill-importmap',
- )
- );
- }
wp_print_inline_script_tag(
wp_json_encode( $import_map, JSON_HEX_TAG | JSON_HEX_AMP ),
array(
@@ -363,4 +363,144 @@
return $src;
}
+
+ /**
+ * Print data associated with Script Modules.
+ *
+ * The data will be embedded in the page HTML and can be read by Script Modules on page load.
+ *
+ * @since 6.7.0
+ *
+ * Data can be associated with a Script Module via the
+ * {@see "script_module_data_{$module_id}"} filter.
+ *
+ * The data for a Script Module will be serialized as JSON in a script tag with an ID of the
+ * form `wp-script-module-data-{$module_id}`.
+ */
+ public function print_script_module_data(): void {
+ $modules = array();
+ foreach ( array_keys( $this->get_marked_for_enqueue() ) as $id ) {
+ if ( '@wordpress/a11y' === $id ) {
+ $this->a11y_available = true;
+ }
+ $modules[ $id ] = true;
+ }
+ foreach ( array_keys( $this->get_import_map()['imports'] ) as $id ) {
+ if ( '@wordpress/a11y' === $id ) {
+ $this->a11y_available = true;
+ }
+ $modules[ $id ] = true;
+ }
+
+ foreach ( array_keys( $modules ) as $module_id ) {
+ /**
+ * Filters data associated with a given Script Module.
+ *
+ * Script Modules may require data that is required for initialization or is essential
+ * to have immediately available on page load. These are suitable use cases for
+ * this data.
+ *
+ * The dynamic portion of the hook name, `$module_id`, refers to the Script Module ID
+ * that the data is associated with.
+ *
+ * This is best suited to pass essential data that must be available to the module for
+ * initialization or immediately on page load. It does not replace the REST API or
+ * fetching data from the client.
+ *
+ * Example:
+ *
+ * add_filter(
+ * 'script_module_data_MyScriptModuleID',
+ * function ( array $data ): array {
+ * $data['dataForClient'] = 'ok';
+ * return $data;
+ * }
+ * );
+ *
+ * If the filter returns no data (an empty array), nothing will be embedded in the page.
+ *
+ * The data for a given Script Module, if provided, will be JSON serialized in a script
+ * tag with an ID of the form `wp-script-module-data-{$module_id}`.
+ *
+ * The data can be read on the client with a pattern like this:
+ *
+ * Example:
+ *
+ * const dataContainer = document.getElementById( 'wp-script-module-data-MyScriptModuleID' );
+ * let data = {};
+ * if ( dataContainer ) {
+ * try {
+ * data = JSON.parse( dataContainer.textContent );
+ * } catch {}
+ * }
+ * // data.dataForClient === 'ok';
+ * initMyScriptModuleWithData( data );
+ *
+ * @since 6.7.0
+ *
+ * @param array $data The data associated with the Script Module.
+ */
+ $data = apply_filters( "script_module_data_{$module_id}", array() );
+
+ if ( is_array( $data ) && array() !== $data ) {
+ /*
+ * This data will be printed as JSON inside a script tag like this:
+ * <script type="application/json"></script>
+ *
+ * A script tag must be closed by a sequence beginning with `</`. It's impossible to
+ * close a script tag without using `<`. We ensure that `<` is escaped and `/` can
+ * remain unescaped, so `</script>` will be printed as `\u003C/script\u00E3`.
+ *
+ * - JSON_HEX_TAG: All < and > are converted to \u003C and \u003E.
+ * - JSON_UNESCAPED_SLASHES: Don't escape /.
+ *
+ * If the page will use UTF-8 encoding, it's safe to print unescaped unicode:
+ *
+ * - JSON_UNESCAPED_UNICODE: Encode multibyte Unicode characters literally (instead of as `\uXXXX`).
+ * - JSON_UNESCAPED_LINE_TERMINATORS: The line terminators are kept unescaped when
+ * JSON_UNESCAPED_UNICODE is supplied. It uses the same behaviour as it was
+ * before PHP 7.1 without this constant. Available as of PHP 7.1.0.
+ *
+ * The JSON specification requires encoding in UTF-8, so if the generated HTML page
+ * is not encoded in UTF-8 then it's not safe to include those literals. They must
+ * be escaped to avoid encoding issues.
+ *
+ * @see https://www.rfc-editor.org/rfc/rfc8259.html for details on encoding requirements.
+ * @see https://www.php.net/manual/en/json.constants.php for details on these constants.
+ * @see https://html.spec.whatwg.org/#script-data-state for details on script tag parsing.
+ */
+ $json_encode_flags = JSON_HEX_TAG | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_LINE_TERMINATORS;
+ if ( ! is_utf8_charset() ) {
+ $json_encode_flags = JSON_HEX_TAG | JSON_UNESCAPED_SLASHES;
+ }
+
+ wp_print_inline_script_tag(
+ wp_json_encode(
+ $data,
+ $json_encode_flags
+ ),
+ array(
+ 'type' => 'application/json',
+ 'id' => "wp-script-module-data-{$module_id}",
+ )
+ );
+ }
+ }
+ }
+
+ /**
+ * @access private This is only intended to be called by the registered actions.
+ *
+ * @since 6.7.0
+ */
+ public function print_a11y_script_module_html() {
+ if ( ! $this->a11y_available ) {
+ return;
+ }
+ echo '<div style="position:absolute;margin:-1px;padding:0;height:1px;width:1px;overflow:hidden;clip-path:inset(50%);border:0;word-wrap:normal !important;">'
+ . '<p id="a11y-speak-intro-text" class="a11y-speak-intro-text" hidden>' . esc_html__( 'Notifications' ) . '</p>'
+ . '<div id="a11y-speak-assertive" class="a11y-speak-region" aria-live="assertive" aria-relevant="additions text" aria-atomic="true"></div>'
+ . '<div id="a11y-speak-polite" class="a11y-speak-region" aria-live="polite" aria-relevant="additions text" aria-atomic="true"></div>'
+ . '</div>';
+ }
}