Narrow return type of wp_get_wp_version

functionMap.php

@@ -184,6 +184,7 @@
     'wp_get_script_tag' => ['non-falsy-string', 'attributes' => 'array<string, string|true>'],
     'wp_get_server_protocol' => ["'HTTP/1.0'|'HTTP/1.1'|'HTTP/2'|'HTTP/2.0'|'HTTP/3'"],
     'wp_get_speculation_rules_configuration' => ["array{mode: 'prefetch'|'prerender', eagerness: 'conservative'|'eager'|'moderate'}|null"],
+    'wp_get_wp_version' => ['non-falsy-string'],
     'wp_hash' => ['lowercase-string&non-falsy-string', 'scheme' => "'auth'|'logged_in'|'nonce'|'secure_auth'"],
     'wp_html_split' => ['non-empty-list<string>'],
     'wp_http_validate_url' => ["(TUrl is numeric|'' ? false : TUrl|false)", '@phpstan-template TUrl' => 'of string', 'url' => 'TUrl'],

tests/data/return/wp-get-wp-version.php

@@ -0,0 +1,10 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PhpStubs\WordPress\Core\Tests;
+
+use function wp_get_wp_version;
+use function PHPStan\Testing\assertType;
+
+assertType('non-falsy-string', wp_get_wp_version());

wordpress-stubs.php

@@ -114230,6 +114230,7 @@ function clean_dirsize_cache($path)
      * @since 6.7.0
      *
      * @return string The current WordPress version.
+     * @phpstan-return non-falsy-string
      */
     function wp_get_wp_version()
     {