diff --git a/examples/context.php b/examples/context.php
index 27154bc0..3a608f93 100644
--- a/examples/context.php
+++ b/examples/context.php
@@ -21,6 +21,16 @@ function defaultContext(): Context
         'name' => 'my_default',
         'production' => false,
         'foo' => 'bar',
+        'nested' => [
+            'merge' => [
+                'key' => [
+                    'value' => 'should keep this',
+                    'replaced' => 'should be replaced',
+                ],
+                'another' => 'should keep',
+            ],
+            'another' => 'should keep',
+        ],
     ]);
 }
 
@@ -28,10 +38,21 @@ function defaultContext(): Context
 function productionContext(): Context
 {
     return defaultContext()
-        ->withData([
-            'name' => 'production',
-            'production' => true,
-        ])
+        ->withData(
+            [
+                'name' => 'production',
+                'production' => true,
+                'nested' => [
+                    'merge' => [
+                        'key' => [
+                            'replaced' => 'replaced value',
+                            'new' => 'new value',
+                        ],
+                    ],
+                ],
+            ],
+            recursive: true
+        )
     ;
 }
 
@@ -83,6 +104,7 @@ function contextInfo(): void
     echo 'Production? ' . (variable('production', false) ? 'yes' : 'no') . "\n";
     echo "verbosity: {$context->verbosityLevel->value}\n";
     echo 'context: ' . variable('foo', 'N/A') . "\n";
+    echo 'nested merge recursive: ' . json_encode(variable('nested', []), \JSON_THROW_ON_ERROR) . "\n";
 }
 
 /**
diff --git a/src/Attribute/AsCommandArgument.php b/src/Attribute/AsCommandArgument.php
index e1ea8963..180f7ae2 100644
--- a/src/Attribute/AsCommandArgument.php
+++ b/src/Attribute/AsCommandArgument.php
@@ -5,7 +5,7 @@
 abstract class AsCommandArgument
 {
     public function __construct(
-        public readonly string|null $name = null,
+        public readonly ?string $name = null,
     ) {
     }
 }
diff --git a/src/Attribute/AsOption.php b/src/Attribute/AsOption.php
index 870e1e68..fa93cfa4 100644
--- a/src/Attribute/AsOption.php
+++ b/src/Attribute/AsOption.php
@@ -12,7 +12,7 @@ class AsOption extends AsCommandArgument
     public function __construct(
         ?string $name = null,
         public readonly string|array|null $shortcut = null,
-        public readonly int|null $mode = null,
+        public readonly ?int $mode = null,
         public readonly string $description = '',
         public readonly array $suggestedValues = [],
     ) {
diff --git a/src/Attribute/AsTask.php b/src/Attribute/AsTask.php
index 391bcae1..e681d0a1 100644
--- a/src/Attribute/AsTask.php
+++ b/src/Attribute/AsTask.php
@@ -11,7 +11,7 @@ class AsTask
      */
     public function __construct(
         public string $name = '',
-        public string|null $namespace = null,
+        public ?string $namespace = null,
         public string $description = '',
         public array $aliases = [],
         public array $onSignals = [],
diff --git a/src/Context.php b/src/Context.php
index c34fbd12..1a4f0afb 100644
--- a/src/Context.php
+++ b/src/Context.php
@@ -17,7 +17,7 @@ public function __construct(
         ?string $currentDirectory = null,
         public readonly bool $tty = false,
         public readonly bool $pty = true,
-        public readonly float|null $timeout = null,
+        public readonly ?float $timeout = null,
         public readonly bool $quiet = false,
         public readonly bool $allowFailure = false,
         public readonly bool $notify = false,
@@ -45,11 +45,25 @@ public function __debugInfo()
         ];
     }
 
-    /** @param array<(int|string), mixed> $data */
-    public function withData(array $data, bool $keepExisting = true): self
+    /**
+     * @param array<(int|string), mixed> $data
+     *
+     * @throws \Exception
+     */
+    public function withData(array $data, bool $keepExisting = true, bool $recursive = true): self
     {
+        if ($keepExisting) {
+            if ($recursive) {
+                /* @var array<(int|string), mixed> */
+                $data = $this->arrayMergeRecursiveDistinct($this->data, $data);
+            } else {
+                /* @var array<(int|string), mixed> */
+                $data = array_merge($this->data, $data);
+            }
+        }
+
         return new self(
-            $keepExisting ? array_merge($this->data, $data) : $data,
+            $data,
             $this->environment,
             $this->currentDirectory,
             $this->tty,
@@ -132,7 +146,7 @@ public function withPty(bool $pty = true): self
         );
     }
 
-    public function withTimeout(float|null $timeout): self
+    public function withTimeout(?float $timeout): self
     {
         return new self(
             $this->data,
@@ -257,4 +271,25 @@ public function offsetUnset(mixed $offset): void
     {
         throw new \LogicException('Context is immutable');
     }
+
+    /**
+     * @param array<(int|string), mixed> $array1
+     * @param array<(int|string), mixed> $array2
+     *
+     * @return array<(int|string), mixed>
+     */
+    private function arrayMergeRecursiveDistinct(array $array1, array $array2): array
+    {
+        /** @var array<(int|string), mixed> $merged */
+        $merged = $array1;
+        foreach ($array2 as $key => $value) {
+            if (\is_array($value) && isset($merged[$key]) && \is_array($merged[$key])) {
+                $merged[$key] = $this->arrayMergeRecursiveDistinct($merged[$key], $value);
+            } else {
+                $merged[$key] = $value;
+            }
+        }
+
+        return $merged;
+    }
 }
diff --git a/src/SectionOutput.php b/src/SectionOutput.php
index b3c0a24e..3a37a6a0 100644
--- a/src/SectionOutput.php
+++ b/src/SectionOutput.php
@@ -14,7 +14,7 @@ class SectionOutput
 
     private OutputInterface|ConsoleSectionOutput $consoleOutput;
 
-    private ConsoleOutput|null $mainOutput;
+    private ?ConsoleOutput $mainOutput;
 
     /** @var \SplObjectStorage<Process, SectionDetails> */
     private \SplObjectStorage $sections;
diff --git a/tests/Examples/Generated/ContextContextDynamicTest.php.output.txt b/tests/Examples/Generated/ContextContextDynamicTest.php.output.txt
index b5e52a95..41f37814 100644
--- a/tests/Examples/Generated/ContextContextDynamicTest.php.output.txt
+++ b/tests/Examples/Generated/ContextContextDynamicTest.php.output.txt
@@ -2,3 +2,4 @@ context name: dynamic
 Production? no
 verbosity: 1
 context: baz
+nested merge recursive: []
diff --git a/tests/Examples/Generated/ContextContextMyDefaultTest.php.output.txt b/tests/Examples/Generated/ContextContextMyDefaultTest.php.output.txt
index d9f99d5a..ec169891 100644
--- a/tests/Examples/Generated/ContextContextMyDefaultTest.php.output.txt
+++ b/tests/Examples/Generated/ContextContextMyDefaultTest.php.output.txt
@@ -2,3 +2,4 @@ context name: my_default
 Production? no
 verbosity: 2
 context: bar
+nested merge recursive: {"merge":{"key":{"value":"should keep this","replaced":"should be replaced"},"another":"should keep"},"another":"should keep"}
diff --git a/tests/Examples/Generated/ContextContextPathTest.php.output.txt b/tests/Examples/Generated/ContextContextPathTest.php.output.txt
index bf1dfcde..9682015f 100644
--- a/tests/Examples/Generated/ContextContextPathTest.php.output.txt
+++ b/tests/Examples/Generated/ContextContextPathTest.php.output.txt
@@ -2,3 +2,4 @@ context name: path
 Production? yes
 verbosity: 1
 context: bar
+nested merge recursive: []
diff --git a/tests/Examples/Generated/ContextContextProductionTest.php.output.txt b/tests/Examples/Generated/ContextContextProductionTest.php.output.txt
index e30eb5ba..b165b460 100644
--- a/tests/Examples/Generated/ContextContextProductionTest.php.output.txt
+++ b/tests/Examples/Generated/ContextContextProductionTest.php.output.txt
@@ -2,3 +2,4 @@ context name: production
 Production? yes
 verbosity: 1
 context: bar
+nested merge recursive: {"merge":{"key":{"value":"should keep this","replaced":"replaced value","new":"new value"},"another":"should keep"},"another":"should keep"}
diff --git a/tests/Examples/Generated/ContextContextRunTest.php.output.txt b/tests/Examples/Generated/ContextContextRunTest.php.output.txt
index b371862f..10168f4a 100644
--- a/tests/Examples/Generated/ContextContextRunTest.php.output.txt
+++ b/tests/Examples/Generated/ContextContextRunTest.php.output.txt
@@ -2,3 +2,4 @@ context name: run
 Production? no
 verbosity: 1
 context: no defined
+nested merge recursive: []
diff --git a/tests/Examples/Generated/ContextContextTest.php.output.txt b/tests/Examples/Generated/ContextContextTest.php.output.txt
index 0d2e5e60..afc29c98 100644
--- a/tests/Examples/Generated/ContextContextTest.php.output.txt
+++ b/tests/Examples/Generated/ContextContextTest.php.output.txt
@@ -2,3 +2,4 @@ context name: my_default
 Production? no
 verbosity: 1
 context: bar
+nested merge recursive: {"merge":{"key":{"value":"should keep this","replaced":"should be replaced"},"another":"should keep"},"another":"should keep"}
diff --git a/tests/Examples/Generated/ContextContextWithTest.php.output.txt b/tests/Examples/Generated/ContextContextWithTest.php.output.txt
index 280f111d..5d932fe3 100644
--- a/tests/Examples/Generated/ContextContextWithTest.php.output.txt
+++ b/tests/Examples/Generated/ContextContextWithTest.php.output.txt
@@ -2,4 +2,5 @@ context name: dynamic
 Production? no
 verbosity: -1
 context: bar
+nested merge recursive: []
 bar
\ No newline at end of file