Fix phpstan issues in create-entry

Author: srtfisher

packages/create-entry/templates/entry/index.php.mustache

@@ -16,10 +16,18 @@
 /**
  * Register the {{slug}} entry point assets so that they can be enqueued.
  */
-function {{nameSpaceSnakeCase}}_register_{{slugUnderscore}}_scripts() {
-	// Automatically load dependencies and version.
+function {{nameSpaceSnakeCase}}_register_{{slugUnderscore}}_scripts(): void {
+	/**
+	 * Asset file generated by wp-scripts.
+	 *
+	 * @var array{dependencies: string[], version: string}|false $asset_file
+	 */
 	$asset_file = include __DIR__ . '/index.asset.php';
 
+	if ( ! $asset_file ) {
+		return;
+	}
+
 	// Register the {{slug}} script.
 	wp_register_script(
 		'{{prefixNameSpace}}-{{slug}}-js',
@@ -45,7 +53,7 @@ add_action( 'init', '{{nameSpaceSnakeCase}}_register_{{slugUnderscore}}_scripts'
 /**
  * Enqueue scripts for the {{slug}} entry point.
  */
-function {{nameSpaceSnakeCase}}_enqueue_{{slugUnderscore}}_scripts() {
+function {{nameSpaceSnakeCase}}_enqueue_{{slugUnderscore}}_scripts(): void {
 	wp_enqueue_script( '{{prefixNameSpace}}-{{slug}}-js' );
 }
 add_action( '{{enqueueHook}}', '{{nameSpaceSnakeCase}}_enqueue_{{slugUnderscore}}_scripts' );
@@ -54,9 +62,9 @@ add_action( '{{enqueueHook}}', '{{nameSpaceSnakeCase}}_enqueue_{{slugUnderscore}
 /**
  * Enqueue styles for the {{slug}} entry point.
  */
-function {{nameSpaceSnakeCase}}_enqueue_{{slugUnderscore}}_styles() {
+function {{nameSpaceSnakeCase}}_enqueue_{{slugUnderscore}}_styles(): void {
 	wp_enqueue_style( '{{prefixNameSpace}}-{{slug}}-css' );
 }
 add_action( '{{enqueueStyleHook}}', '{{nameSpaceSnakeCase}}_enqueue_{{slugUnderscore}}_styles' );
 {{/hasStyles}}
-{{/hasEnqueue}}
+{{/hasEnqueue}}