wp-includes/interactivity-api/class-wp-interactivity-api.php:1129Outputs markup for the @wordpress/interactivity-router script module.
public function print_router_markup() { echo <<<HTML <div class="wp-interactivity-router-loading-bar" data-wp-interactive="core/router" data-wp-class--start-animation="state.navigation.hasStarted" data-wp-class--finish-animation="state.navigation.hasFinished" ></div>HTML; }Introduced in 6.7.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/interactivity-api/class-wp-interactivity-api.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.