Fix PHPStan warnings

lib/WP/Functions.php

@@ -19,15 +19,32 @@ class Functions {
     self::$instance = $instance;
   }
 
-  function doAction() {
+  /**
+   * @param string $tag
+   * @param mixed ...$args
+   * @return mixed
+   */
+  function doAction($tag, ...$args) {
     return call_user_func_array('do_action', func_get_args());
   }
 
-  function applyFilters() {
+  /**
+   * @param string $tag
+   * @param mixed ...$args
+   * @return mixed
+   */
+  function applyFilters($tag, ...$args) {
     return call_user_func_array('apply_filters', func_get_args());
   }
 
-  function addAction() {
+  /**
+   * @param string $tag
+   * @param callable $function_to_add
+   * @param int $priority
+   * @param int $accepted_args
+   * @return boolean
+   */
+  function addAction($tag, $function_to_add, $priority = 10, $accepted_args = 1) {
     return call_user_func_array('add_action', func_get_args());
   }
 

lib/WooCommerce/Helper.php

@@ -5,25 +5,16 @@ class Helper {
   function isWooCommerceActive() {
     return class_exists('WooCommerce');
   }
+
   function wcGetCustomerOrderCount($user_id) {
-    if (! is_callable('wc_get_customer_order_count')) {
-      throw new \Exception("function 'wc_get_customer_order_count' not found!");
-    }
     return wc_get_customer_order_count($user_id);
   }
-  function wcGetOrder($order = false) {
-    if (! is_callable('wc_get_order')) {
-      throw new \Exception("function 'wc_get_order' not found!");
 
-    }
+  function wcGetOrder($order = false) {
     return wc_get_order($order);
   }
 
   function wcPrice($price, array $args = array()) {
-    if (! is_callable('wc_price')) {
-      throw new \Exception("function 'wc_price' not found!");
-
-    }
     return wc_price($price, $args);
   }
 }

tasks/phpstan/bootstrap.php

@@ -4,3 +4,19 @@ define('ABSPATH', getenv('WP_ROOT') . '/');
 
 require_once ABSPATH . 'wp-load.php';
 require_once ABSPATH . 'wp-admin/includes/admin.php';
+
+function wc_get_customer_order_count(int $user_id): int {
+  return 0;
+}
+
+/**
+ * @param  mixed $order
+ * @return mixed
+ */
+function wc_get_order($order = false) {
+  return false;
+}
+
+function wc_price(float $price, array $args = []): string {
+  return '';
+}