perf(Generator.php): improve process handling

- Add a missing newline in the `__construct` method
- Update the `mustRunProcess` and `runProcess` methods to include type declarations
- Update the `getHelper`   method to include a return type declaration
- Modify the `defaultRunningCallback` method to be protected

app/Generators/Generator.php

@@ -40,6 +40,7 @@ abstract class Generator implements GeneratorContract
 
     /**
      * @psalm-suppress UndefinedMethod
+     *
      * @noinspection PhpUndefinedMethodInspection
      */
     public function __construct(array $config)
@@ -53,9 +54,10 @@ public function __construct(array $config)
 
     /**
      * @param array|string|\Symfony\Component\Process\Process $cmd
+     *
      * @noinspection MissingParameterTypeDeclarationInspection
      */
-    public function mustRunProcess(
+    protected function mustRunProcess(
         $cmd,
         ?string $error = null,
         ?callable $callback = null,
@@ -72,10 +74,13 @@ public function mustRunProcess(
 
     /**
      * @param array|string|\Symfony\Component\Process\Process $cmd
-     * @noinspection MissingParameterTypeDeclarationInspection
+     *
      * @psalm-suppress UndefinedInterfaceMethod
+     *
+     * @noinspection MissingParameterTypeDeclarationInspection
+     * @noinspection PhpPossiblePolymorphicInvocationInspection
      */
-    public function runProcess(
+    protected function runProcess(
         $cmd,
         ?string $error = null,
         ?callable $callback = null,
@@ -89,18 +94,18 @@ public function runProcess(
         return $this->getHelper('process')->run($output ?? $this->output, $cmd, $error, $callback, $verbosity);
     }
 
-    public function defaultRunningCallback(): callable
-    {
-        return function (string $type, string $data): void {
-            Process::OUT === $type ? $this->output->write($data) : $this->output->write("<fg=red>$data</>");
-        };
-    }
-
     /**
      * @throws InvalidArgumentException if the helper is not defined
      */
-    public function getHelper(string $name): HelperInterface
+    protected function getHelper(string $name): HelperInterface
     {
         return $this->helperSet->get($name);
     }
+
+    protected function defaultRunningCallback(): callable
+    {
+        return function (string $type, string $data): void {
+            Process::OUT === $type ? $this->output->write($data) : $this->output->write("<fg=red>$data</>");
+        };
+    }
 }

tests/Unit/Generators/GeneratorTest.php

@@ -27,5 +27,9 @@
 });
 
 it('can run string cmd', function (): void {
-    expect($this->generator->runProcess('echo foo'))->isSuccessful()->toBeTrue();
+    expect(
+        (function () {
+            return $this->runProcess('echo foo');
+        })->call($this->generator)
+    )->isSuccessful()->toBeTrue();
 })->group(__DIR__, __FILE__);