refactor: replace function null checks with strict comparisons

Author: wazabii8

EventHandler.php

@@ -62,7 +62,7 @@ public function addEvent(callable|object|string $event, ?string $bind = null): v
             }
         }
 
-        if (is_null($bind)) {
+        if ($bind === null) {
             $this->event[] = $event;
         } else {
             $this->event[] = [$bind => $event];
@@ -95,7 +95,7 @@ public function __call(string $method, array $args): mixed
                 throw new BadMethodCallException("The method \"".$method."\" does not exist in the class (" . $handler[0]::class . ")", 1);
             }
             */
-            if (is_null($handler[1][0]) || in_array($method, $handler[1])) {
+            if ($handler[1][0] === null || in_array($method, $handler[1])) {
                 $this->bindable[$method] = $method;
             }
             $data = call_user_func_array([$handler[0], $method], $args);

Reflection.php

@@ -77,7 +77,7 @@ public function dependencyInjector(?object $class = null, ?string $method = null
     {
         $args = [];
         $constructor = $this->setDependMethod($method, $this->reflect);
-        if (!is_null($constructor)) {
+        if ($constructor !== null) {
             $params = $constructor->getParameters();
             $this->injectRecursion($params, $this->reflect->getName());
             foreach ($params as $param) {
@@ -93,7 +93,7 @@ public function dependencyInjector(?object $class = null, ?string $method = null
                 }
             }
         }
-        if (!is_null($this->dependMethod)) {
+        if ($this->dependMethod !== null) {
             $this->dependMethod = null;
             return $constructor->invokeArgs($class, $args);
         }
@@ -111,7 +111,7 @@ public function setDependMethod(?string $method, ReflectionClass $inst): ?Reflec
     {
         $method = ($method === "constructor") ? null : $method;
         $this->dependMethod = $method;
-        if (is_null($this->dependMethod)) {
+        if ($this->dependMethod === null) {
             return $inst->getConstructor();
         }
         return $inst->getMethod($this->dependMethod);
@@ -239,7 +239,7 @@ private function getClassNameFromParam(ReflectionParameter $param): ?string
     private function insertInterfaceClasses(ReflectionClass $inst, string $classNameA): void
     {
         if ($this->allowInterfaces) {
-            if (!is_null(self::$interfaceFactory)) {
+            if (self::$interfaceFactory !== null) {
                 foreach (self::$interfaceFactory as $call) {
                     self::$class[$classNameA] = $call($inst->getShortName(), $classNameA, $inst);
                 }
@@ -323,7 +323,7 @@ public function getReflect(): ReflectionClass
      */
     public function get(): mixed
     {
-        if (!is_null($this->method)) {
+        if ($this->method !== null) {
             $method = $this->reflect->getMethod($this->method);
             if ($method->isConstructor()) {
                 return $this->getClass();
@@ -333,7 +333,7 @@ public function get(): mixed
             }
             $inst = $this->reflect->newInstanceWithoutConstructor();
 
-            if (!is_null($this->args)) {
+            if ($this->args !== null) {
                 return $method->invokeArgs($inst, $this->args);
             } else {
                 return $method->invoke($inst);
@@ -354,7 +354,7 @@ public static function getClassList(): array
      */
     private function getClass(): object
     {
-        if (!is_null($this->args)) {
+        if ($this->args !== null) {
             $inst = $this->reflect->newInstanceArgs($this->args);
         } else {
             $inst = $this->dependencyInjector();