less deps

composer.json

@@ -9,8 +9,7 @@
     "require": {
         "php": ">=8.2",
         "symfony/console": "^6.4",
-        "symfony/process": "^7.0",
-        "webmozart/assert": "^1.11"
+        "symfony/process": "^7.0"
     },
     "require-dev": {
         "phpstan/extension-installer": "^1.3",

src/Exception/ShouldNotHappenException.php

@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+namespace TomasVotruba\PHPStanBodyscan\Exception;
+
+final class ShouldNotHappenException extends \Exception
+{
+}

src/Utils/FileLoader.php

@@ -4,6 +4,7 @@
 
 namespace TomasVotruba\PHPStanBodyscan\Utils;
 
+use TomasVotruba\PHPStanBodyscan\Exception\ShouldNotHappenException;
 use Webmozart\Assert\Assert;
 
 final class FileLoader
@@ -13,11 +14,13 @@ final class FileLoader
      */
     public static function resolveEnvVariablesFromFile(string $envFile): array
     {
-        Assert::fileExists($envFile);
+        if (! file_exists($envFile)) {
+            throw new ShouldNotHappenException(sprintf('Env file "%s" was not found.', $envFile));
+        }
 
         // load env file
+        /** @var string $envContent */
         $envContent = file_get_contents($envFile);
-        Assert::string($envContent);
 
         $envLines = explode("\n", $envContent);