diff --git a/.php_cs b/.php_cs
index 3a6104c..233c4e9 100644
--- a/.php_cs
+++ b/.php_cs
@@ -1,40 +1,10 @@
 <?php
 
-return PhpCsFixer\Config::create()
-    ->setRiskyAllowed(true)
-    ->setRules([
-        "@PSR1" => true,
-        "@PSR2" => true,
-        "braces" => [
-            "allow_single_line_closure" => true,
-            "position_after_functions_and_oop_constructs" => "same",
-        ],
-        "array_syntax" => ["syntax" => "short"],
-        "cast_spaces" => true,
-        "combine_consecutive_unsets" => true,
-        "function_to_constant" => true,
-        "no_multiline_whitespace_before_semicolons" => true,
-        "no_unused_imports" => true,
-        "no_useless_else" => true,
-        "no_useless_return" => true,
-        "no_whitespace_before_comma_in_array" => true,
-        "no_whitespace_in_blank_line" => true,
-        "non_printable_character" => true,
-        "normalize_index_brace" => true,
-        "ordered_imports" => true,
-        "php_unit_construct" => true,
-        "php_unit_dedicate_assert" => true,
-        "php_unit_fqcn_annotation" => true,
-        "phpdoc_summary" => true,
-        "phpdoc_types" => true,
-        "psr4" => true,
-        "return_type_declaration" => ["space_before" => "none"],
-        "short_scalar_cast" => true,
-        "single_blank_line_before_namespace" => true,
-    ])
-    ->setFinder(
-        PhpCsFixer\Finder::create()
-            ->in(__DIR__ . "/examples")
-            ->in(__DIR__ . "/lib")
-            ->in(__DIR__ . "/test")
-    );
+$config = new Amp\CodeStyle\Config();
+$config->getFinder()->in(__DIR__);
+
+$cacheDir = getenv('TRAVIS') ? getenv('HOME') . '/.php-cs-fixer' : __DIR__;
+
+$config->setCacheFile($cacheDir . '/.php_cs.cache');
+
+return $config;
diff --git a/composer.json b/composer.json
index 79349dd..288a33a 100644
--- a/composer.json
+++ b/composer.json
@@ -5,12 +5,12 @@
     "require": {
         "php": ">=7",
         "amphp/amp": "^2",
-        "amphp/byte-stream": "^1"
+        "amphp/byte-stream": "^1.2"
     },
     "require-dev": {
         "phpunit/phpunit": "^6",
         "amphp/phpunit-util": "^1",
-        "friendsofphp/php-cs-fixer": "^2.3"
+        "amphp/php-cs-fixer-config": "dev-master"
     },
     "license": "MIT",
     "authors": [
@@ -42,5 +42,14 @@
         "platform": {
             "php": "7.0.0"
         }
+    },
+    "scripts": {
+        "check": [
+            "@cs",
+            "@test"
+        ],
+        "cs": "php-cs-fixer fix -v --diff --dry-run",
+        "cs-fix": "php-cs-fixer fix -v --diff",
+        "test": "@php -dzend.assertions=1 -dassert.exception=1 ./vendor/bin/phpunit --coverage-text"
     }
 }
diff --git a/examples/basic-command.php b/examples/basic-command.php
index 86761e9..410085c 100644
--- a/examples/basic-command.php
+++ b/examples/basic-command.php
@@ -1,6 +1,6 @@
 <?php
 
-include dirname(__DIR__) . "/vendor/autoload.php";
+include \dirname(__DIR__) . "/vendor/autoload.php";
 
 use Amp\ByteStream\Message;
 use Amp\Process\Process;
diff --git a/examples/ping-many.php b/examples/ping-many.php
index f453839..0bd0a89 100644
--- a/examples/ping-many.php
+++ b/examples/ping-many.php
@@ -1,11 +1,12 @@
 <?php
 
-include dirname(__DIR__) . "/vendor/autoload.php";
+include \dirname(__DIR__) . "/vendor/autoload.php";
 
 use Amp\Process\Process;
 use function Amp\Promise\all;
 
-function show_process_output(Process $process): \Generator {
+function show_process_output(Process $process): \Generator
+{
     $stream = $process->getStdout();
 
     while (null !== $chunk = yield $stream->read()) {
diff --git a/examples/watch-live.php b/examples/watch-live.php
index 10ef6ce..1af5eeb 100644
--- a/examples/watch-live.php
+++ b/examples/watch-live.php
@@ -1,6 +1,6 @@
 <?php
 
-include dirname(__DIR__) . "/vendor/autoload.php";
+include \dirname(__DIR__) . "/vendor/autoload.php";
 
 use Amp\Process\Process;
 
diff --git a/examples/write-command.php b/examples/write-command.php
index 96601b7..149260d 100644
--- a/examples/write-command.php
+++ b/examples/write-command.php
@@ -1,6 +1,6 @@
 <?php
 
-include dirname(__DIR__) . "/vendor/autoload.php";
+include \dirname(__DIR__) . "/vendor/autoload.php";
 
 use Amp\ByteStream\Message;
 use Amp\Process\Process;
diff --git a/lib/Internal/Posix/Handle.php b/lib/Internal/Posix/Handle.php
index 134b465..e46efd5 100644
--- a/lib/Internal/Posix/Handle.php
+++ b/lib/Internal/Posix/Handle.php
@@ -6,8 +6,10 @@ use Amp\Deferred;
 use Amp\Process\Internal\ProcessHandle;
 
 /** @internal */
-final class Handle extends ProcessHandle {
-    public function __construct() {
+final class Handle extends ProcessHandle
+{
+    public function __construct()
+    {
         $this->pidDeferred = new Deferred;
         $this->joinDeferred = new Deferred;
         $this->originalParentPid = \getmypid();
diff --git a/lib/Internal/Posix/Runner.php b/lib/Internal/Posix/Runner.php
index aad5b7c..600cc15 100644
--- a/lib/Internal/Posix/Runner.php
+++ b/lib/Internal/Posix/Runner.php
@@ -15,7 +15,8 @@ use Amp\Process\ProcessOutputStream;
 use Amp\Promise;
 
 /** @internal */
-final class Runner implements ProcessRunner {
+final class Runner implements ProcessRunner
+{
     const FD_SPEC = [
         ["pipe", "r"], // stdin
         ["pipe", "w"], // stdout
@@ -23,7 +24,8 @@ final class Runner implements ProcessRunner {
         ["pipe", "w"], // exit code pipe
     ];
 
-    public static function onProcessEndExtraDataPipeReadable($watcher, $stream, Handle $handle) {
+    public static function onProcessEndExtraDataPipeReadable($watcher, $stream, Handle $handle)
+    {
         Loop::cancel($watcher);
         $handle->extraDataPipeWatcher = null;
 
@@ -36,7 +38,8 @@ final class Runner implements ProcessRunner {
         }
     }
 
-    public static function onProcessStartExtraDataPipeReadable($watcher, $stream, $data) {
+    public static function onProcessStartExtraDataPipeReadable($watcher, $stream, $data)
+    {
         Loop::cancel($watcher);
 
         $pid = \rtrim(@\fgets($stream));
@@ -70,7 +73,8 @@ final class Runner implements ProcessRunner {
     }
 
     /** @inheritdoc */
-    public function start(string $command, string $cwd = null, array $env = [], array $options = []): ProcessHandle {
+    public function start(string $command, string $cwd = null, array $env = [], array $options = []): ProcessHandle
+    {
         $command = \sprintf(
             '{ (%s) <&3 3<&- 3>/dev/null & } 3<&0;' .
             'pid=$!; echo $pid >&3; wait $pid; RC=$?; echo $RC >&3; exit $RC',
@@ -124,7 +128,8 @@ final class Runner implements ProcessRunner {
     }
 
     /** @inheritdoc */
-    public function join(ProcessHandle $handle): Promise {
+    public function join(ProcessHandle $handle): Promise
+    {
         /** @var Handle $handle */
         if ($handle->extraDataPipeWatcher !== null) {
             Loop::reference($handle->extraDataPipeWatcher);
@@ -134,7 +139,8 @@ final class Runner implements ProcessRunner {
     }
 
     /** @inheritdoc */
-    public function kill(ProcessHandle $handle) {
+    public function kill(ProcessHandle $handle)
+    {
         /** @var Handle $handle */
         if ($handle->extraDataPipeWatcher !== null) {
             Loop::cancel($handle->extraDataPipeWatcher);
@@ -160,7 +166,8 @@ final class Runner implements ProcessRunner {
     }
 
     /** @inheritdoc */
-    public function signal(ProcessHandle $handle, int $signo) {
+    public function signal(ProcessHandle $handle, int $signo)
+    {
         /** @var Handle $handle */
         if (!\proc_terminate($handle->proc, $signo)) {
             throw new ProcessException("Sending signal to process failed");
@@ -168,7 +175,8 @@ final class Runner implements ProcessRunner {
     }
 
     /** @inheritdoc */
-    public function destroy(ProcessHandle $handle) {
+    public function destroy(ProcessHandle $handle)
+    {
         /** @var Handle $handle */
         if ($handle->status < ProcessStatus::ENDED && \getmypid() === $handle->originalParentPid) {
             try {
@@ -182,7 +190,8 @@ final class Runner implements ProcessRunner {
         $this->free($handle);
     }
 
-    private function free(Handle $handle) {
+    private function free(Handle $handle)
+    {
         /** @var Handle $handle */
         if ($handle->extraDataPipeWatcher !== null) {
             Loop::cancel($handle->extraDataPipeWatcher);
diff --git a/lib/Internal/ProcessHandle.php b/lib/Internal/ProcessHandle.php
index e4aa90c..f3b0d39 100644
--- a/lib/Internal/ProcessHandle.php
+++ b/lib/Internal/ProcessHandle.php
@@ -7,7 +7,8 @@ use Amp\Process\ProcessInputStream;
 use Amp\Process\ProcessOutputStream;
 use Amp\Struct;
 
-abstract class ProcessHandle {
+abstract class ProcessHandle
+{
     use Struct;
 
     /** @var ProcessOutputStream */
diff --git a/lib/Internal/ProcessRunner.php b/lib/Internal/ProcessRunner.php
index bfbcbb2..3adf0f2 100644
--- a/lib/Internal/ProcessRunner.php
+++ b/lib/Internal/ProcessRunner.php
@@ -5,7 +5,8 @@ namespace Amp\Process\Internal;
 use Amp\Process\ProcessException;
 use Amp\Promise;
 
-interface ProcessRunner {
+interface ProcessRunner
+{
     /**
      * Start a process using the supplied parameters.
      *
diff --git a/lib/Internal/ProcessStatus.php b/lib/Internal/ProcessStatus.php
index 14f3e38..0c82ed1 100644
--- a/lib/Internal/ProcessStatus.php
+++ b/lib/Internal/ProcessStatus.php
@@ -2,12 +2,14 @@
 
 namespace Amp\Process\Internal;
 
-final class ProcessStatus {
+final class ProcessStatus
+{
     const STARTING = 0;
     const RUNNING = 1;
     const ENDED = 2;
 
-    private function __construct() {
+    private function __construct()
+    {
         // empty to prevent instances of this class
     }
 }
diff --git a/lib/Internal/Windows/Handle.php b/lib/Internal/Windows/Handle.php
index be34e36..1820e78 100644
--- a/lib/Internal/Windows/Handle.php
+++ b/lib/Internal/Windows/Handle.php
@@ -9,8 +9,10 @@ use Amp\Process\Internal\ProcessHandle;
  * @internal
  * @codeCoverageIgnore Windows only.
  */
-final class Handle extends ProcessHandle {
-    public function __construct() {
+final class Handle extends ProcessHandle
+{
+    public function __construct()
+    {
         $this->joinDeferred = new Deferred;
         $this->pidDeferred = new Deferred;
     }
diff --git a/lib/Internal/Windows/HandshakeStatus.php b/lib/Internal/Windows/HandshakeStatus.php
index 16734ad..6b4fcf6 100644
--- a/lib/Internal/Windows/HandshakeStatus.php
+++ b/lib/Internal/Windows/HandshakeStatus.php
@@ -6,7 +6,8 @@ namespace Amp\Process\Internal\Windows;
  * @internal
  * @codeCoverageIgnore Windows only.
  */
-final class HandshakeStatus {
+final class HandshakeStatus
+{
     const SUCCESS = 0;
     const SIGNAL_UNEXPECTED = 0x01;
     const INVALID_STREAM_ID = 0x02;
@@ -14,7 +15,8 @@ final class HandshakeStatus {
     const DUPLICATE_STREAM_ID = 0x04;
     const INVALID_CLIENT_TOKEN = 0x05;
 
-    private function __construct() {
+    private function __construct()
+    {
         // empty to prevent instances of this class
     }
 }
diff --git a/lib/Internal/Windows/PendingSocketClient.php b/lib/Internal/Windows/PendingSocketClient.php
index bb21a4e..136629b 100644
--- a/lib/Internal/Windows/PendingSocketClient.php
+++ b/lib/Internal/Windows/PendingSocketClient.php
@@ -8,7 +8,8 @@ use Amp\Struct;
  * @internal
  * @codeCoverageIgnore Windows only.
  */
-final class PendingSocketClient {
+final class PendingSocketClient
+{
     use Struct;
 
     public $readWatcher;
diff --git a/lib/Internal/Windows/Runner.php b/lib/Internal/Windows/Runner.php
index 67c8262..3ed5caa 100644
--- a/lib/Internal/Windows/Runner.php
+++ b/lib/Internal/Windows/Runner.php
@@ -17,7 +17,8 @@ use const Amp\Process\BIN_DIR;
  * @internal
  * @codeCoverageIgnore Windows only.
  */
-final class Runner implements ProcessRunner {
+final class Runner implements ProcessRunner
+{
     const FD_SPEC = [
         ["pipe", "r"], // stdin
         ["pipe", "w"], // stdout
@@ -33,11 +34,12 @@ final class Runner implements ProcessRunner {
 
     private $socketConnector;
 
-    private function makeCommand(string $workingDirectory): string {
+    private function makeCommand(string $workingDirectory): string
+    {
         $wrapperPath = self::WRAPPER_EXE_PATH;
 
         // We can't execute the exe from within the PHAR, so copy it out...
-        if (strncmp($wrapperPath, "phar://", 7) === 0) {
+        if (\strncmp($wrapperPath, "phar://", 7) === 0) {
             if (self::$pharWrapperPath === null) {
                 self::$pharWrapperPath = \tempnam(\sys_get_temp_dir(), "amphp-process-wrapper-");
                 \copy(self::WRAPPER_EXE_PATH, self::$pharWrapperPath);
@@ -65,12 +67,14 @@ final class Runner implements ProcessRunner {
         return $result;
     }
 
-    public function __construct() {
+    public function __construct()
+    {
         $this->socketConnector = new SocketConnector;
     }
 
     /** @inheritdoc */
-    public function start(string $command, string $cwd = null, array $env = [], array $options = []): ProcessHandle {
+    public function start(string $command, string $cwd = null, array $env = [], array $options = []): ProcessHandle
+    {
         if (\strpos($command, "\0") !== false) {
             throw new ProcessException("Can't execute commands that contain null bytes.");
         }
@@ -130,7 +134,8 @@ final class Runner implements ProcessRunner {
     }
 
     /** @inheritdoc */
-    public function join(ProcessHandle $handle): Promise {
+    public function join(ProcessHandle $handle): Promise
+    {
         /** @var Handle $handle */
         $handle->exitCodeRequested = true;
 
@@ -142,7 +147,8 @@ final class Runner implements ProcessRunner {
     }
 
     /** @inheritdoc */
-    public function kill(ProcessHandle $handle) {
+    public function kill(ProcessHandle $handle)
+    {
         /** @var Handle $handle */
         // todo: send a signal to the wrapper to kill the child instead?
         if (!\proc_terminate($handle->proc)) {
@@ -174,12 +180,14 @@ final class Runner implements ProcessRunner {
     }
 
     /** @inheritdoc */
-    public function signal(ProcessHandle $handle, int $signo) {
+    public function signal(ProcessHandle $handle, int $signo)
+    {
         throw new ProcessException('Signals are not supported on Windows');
     }
 
     /** @inheritdoc */
-    public function destroy(ProcessHandle $handle) {
+    public function destroy(ProcessHandle $handle)
+    {
         /** @var Handle $handle */
         if ($handle->status < ProcessStatus::ENDED && \is_resource($handle->proc)) {
             try {
@@ -193,7 +201,8 @@ final class Runner implements ProcessRunner {
         $this->free($handle);
     }
 
-    private function free(Handle $handle) {
+    private function free(Handle $handle)
+    {
         if ($handle->childPidWatcher !== null) {
             Loop::cancel($handle->childPidWatcher);
             $handle->childPidWatcher = null;
diff --git a/lib/Internal/Windows/SignalCode.php b/lib/Internal/Windows/SignalCode.php
index ce065f2..6ab6029 100644
--- a/lib/Internal/Windows/SignalCode.php
+++ b/lib/Internal/Windows/SignalCode.php
@@ -6,13 +6,15 @@ namespace Amp\Process\Internal\Windows;
  * @internal
  * @codeCoverageIgnore Windows only.
  */
-final class SignalCode {
+final class SignalCode
+{
     const HANDSHAKE = 0x01;
     const HANDSHAKE_ACK = 0x02;
     const CHILD_PID = 0x03;
     const EXIT_CODE = 0x04;
 
-    private function __construct() {
+    private function __construct()
+    {
         // empty to prevent instances of this class
     }
 }
diff --git a/lib/Internal/Windows/SocketConnector.php b/lib/Internal/Windows/SocketConnector.php
index 1934285..ec476c4 100644
--- a/lib/Internal/Windows/SocketConnector.php
+++ b/lib/Internal/Windows/SocketConnector.php
@@ -12,7 +12,8 @@ use Amp\Process\ProcessException;
  * @internal
  * @codeCoverageIgnore Windows only.
  */
-final class SocketConnector {
+final class SocketConnector
+{
     const SERVER_SOCKET_URI = 'tcp://127.0.0.1:0';
     const SECURITY_TOKEN_SIZE = 16;
     const CONNECT_TIMEOUT = 1000;
@@ -32,7 +33,8 @@ final class SocketConnector {
     /** @var int */
     public $port;
 
-    public function __construct() {
+    public function __construct()
+    {
         $flags = \STREAM_SERVER_LISTEN | \STREAM_SERVER_BIND;
         $this->server = \stream_socket_server(self::SERVER_SOCKET_URI, $errNo, $errStr, $flags);
 
@@ -50,14 +52,16 @@ final class SocketConnector {
         Loop::unreference(Loop::onReadable($this->server, [$this, 'onServerSocketReadable']));
     }
 
-    private function failClientHandshake($socket, int $code) {
+    private function failClientHandshake($socket, int $code)
+    {
         \fwrite($socket, \chr(SignalCode::HANDSHAKE_ACK) . \chr($code));
         \fclose($socket);
 
         unset($this->pendingClients[(int) $socket]);
     }
 
-    public function failHandleStart(Handle $handle, string $message, ...$args) {
+    public function failHandleStart(Handle $handle, string $message, ...$args)
+    {
         Loop::cancel($handle->connectTimeoutWatcher);
 
         unset($this->pendingProcesses[$handle->wrapperPid]);
@@ -88,7 +92,8 @@ final class SocketConnector {
      *
      * @return string|null
      */
-    private function readDataFromPendingClient($socket, int $length, PendingSocketClient $state) {
+    private function readDataFromPendingClient($socket, int $length, PendingSocketClient $state)
+    {
         $data = \fread($socket, $length);
 
         if ($data === false || $data === '') {
@@ -109,7 +114,8 @@ final class SocketConnector {
         return $data;
     }
 
-    public function onReadableHandshake($watcher, $socket) {
+    public function onReadableHandshake($watcher, $socket)
+    {
         $socketId = (int) $socket;
         $pendingClient = $this->pendingClients[$socketId];
 
@@ -169,7 +175,8 @@ final class SocketConnector {
         $pendingClient->readWatcher = Loop::onReadable($socket, [$this, 'onReadableHandshakeAck']);
     }
 
-    public function onReadableHandshakeAck($watcher, $socket) {
+    public function onReadableHandshakeAck($watcher, $socket)
+    {
         $socketId = (int) $socket;
         $pendingClient = $this->pendingClients[$socketId];
 
@@ -217,7 +224,8 @@ final class SocketConnector {
         }
     }
 
-    public function onReadableChildPid($watcher, $socket, Handle $handle) {
+    public function onReadableChildPid($watcher, $socket, Handle $handle)
+    {
         $data = \fread($socket, 5);
 
         if ($data === false || $data === '') {
@@ -264,7 +272,8 @@ final class SocketConnector {
         unset($this->pendingProcesses[$handle->wrapperPid]);
     }
 
-    public function onReadableExitCode($watcher, $socket, Handle $handle) {
+    public function onReadableExitCode($watcher, $socket, Handle $handle)
+    {
         $data = \fread($socket, 5);
 
         if ($data === false || $data === '') {
@@ -305,7 +314,8 @@ final class SocketConnector {
         }
     }
 
-    public function onClientSocketConnectTimeout($watcher, $socket) {
+    public function onClientSocketConnectTimeout($watcher, $socket)
+    {
         $id = (int) $socket;
 
         Loop::cancel($this->pendingClients[$id]->readWatcher);
@@ -314,7 +324,8 @@ final class SocketConnector {
         \fclose($socket);
     }
 
-    public function onServerSocketReadable() {
+    public function onServerSocketReadable()
+    {
         $socket = \stream_socket_accept($this->server);
 
         if (!\stream_set_blocking($socket, false)) {
@@ -328,7 +339,8 @@ final class SocketConnector {
         $this->pendingClients[(int) $socket] = $pendingClient;
     }
 
-    public function onProcessConnectTimeout($watcher, Handle $handle) {
+    public function onProcessConnectTimeout($watcher, Handle $handle)
+    {
         $running = \is_resource($handle->proc) && \proc_get_status($handle->proc)['running'];
 
         $error = null;
@@ -352,7 +364,8 @@ final class SocketConnector {
         $handle->joinDeferred->fail($error);
     }
 
-    public function registerPendingProcess(Handle $handle) {
+    public function registerPendingProcess(Handle $handle)
+    {
         // Use Loop::defer() to start the timeout only after the loop has ticked once. This prevents issues with many
         // things started at once, see https://github.com/amphp/process/issues/21.
         $handle->connectTimeoutWatcher = Loop::defer(function () use ($handle) {
diff --git a/lib/Process.php b/lib/Process.php
index aef4f10..2e7a8cd 100644
--- a/lib/Process.php
+++ b/lib/Process.php
@@ -10,7 +10,8 @@ use Amp\Process\Internal\ProcessStatus;
 use Amp\Process\Internal\Windows\Runner as WindowsProcessRunner;
 use Amp\Promise;
 
-class Process {
+class Process
+{
     /** @var ProcessRunner */
     private $processRunner;
 
@@ -38,7 +39,8 @@ class Process {
      *
      * @throws \Error If the arguments are invalid.
      */
-    public function __construct($command, string $cwd = null, array $env = [], array $options = []) {
+    public function __construct($command, string $cwd = null, array $env = [], array $options = [])
+    {
         $command = \is_array($command)
             ? \implode(" ", \array_map("escapeshellarg", $command))
             : (string) $command;
@@ -73,13 +75,15 @@ class Process {
     /**
      * Stops the process if it is still running.
      */
-    public function __destruct() {
+    public function __destruct()
+    {
         if ($this->handle !== null) {
             $this->processRunner->destroy($this->handle);
         }
     }
 
-    public function __clone() {
+    public function __clone()
+    {
         throw new \Error("Cloning is not allowed!");
     }
 
@@ -88,7 +92,8 @@ class Process {
      *
      * @throws StatusError If the process has already been started.
      */
-    public function start() {
+    public function start()
+    {
         if ($this->handle) {
             throw new StatusError("Process has already been started.");
         }
@@ -103,7 +108,8 @@ class Process {
      *
      * @throws StatusError If the process has already been started.
      */
-    public function join(): Promise {
+    public function join(): Promise
+    {
         if (!$this->handle) {
             throw new StatusError("Process has not been started.");
         }
@@ -117,7 +123,8 @@ class Process {
      * @throws StatusError If the process is not running.
      * @throws ProcessException If terminating the process fails.
      */
-    public function kill() {
+    public function kill()
+    {
         if (!$this->isRunning()) {
             throw new StatusError("Process is not running.");
         }
@@ -133,7 +140,8 @@ class Process {
      * @throws StatusError If the process is not running.
      * @throws ProcessException If sending the signal fails.
      */
-    public function signal(int $signo) {
+    public function signal(int $signo)
+    {
         if (!$this->isRunning()) {
             throw new StatusError("Process is not running.");
         }
@@ -148,7 +156,8 @@ class Process {
      *
      * @throws StatusError If the process has not started.
      */
-    public function getPid(): Promise {
+    public function getPid(): Promise
+    {
         if (!$this->handle) {
             throw new StatusError("Process has not been started.");
         }
@@ -161,7 +170,8 @@ class Process {
      *
      * @return string The command to execute.
      */
-    public function getCommand(): string {
+    public function getCommand(): string
+    {
         return $this->command;
     }
 
@@ -170,7 +180,8 @@ class Process {
      *
      * @return string The current working directory an empty string if inherited from the current PHP process.
      */
-    public function getWorkingDirectory(): string {
+    public function getWorkingDirectory(): string
+    {
         if ($this->cwd === "") {
             return \getcwd() ?: "";
         }
@@ -183,7 +194,8 @@ class Process {
      *
      * @return string[] Array of environment variables.
      */
-    public function getEnv(): array {
+    public function getEnv(): array
+    {
         return $this->env;
     }
 
@@ -192,7 +204,8 @@ class Process {
      *
      * @return mixed[] Array of options.
      */
-    public function getOptions(): array {
+    public function getOptions(): array
+    {
         return $this->options;
     }
 
@@ -201,7 +214,8 @@ class Process {
      *
      * @return bool
      */
-    public function isRunning(): bool {
+    public function isRunning(): bool
+    {
         return $this->handle && $this->handle->status !== ProcessStatus::ENDED;
     }
 
@@ -210,7 +224,8 @@ class Process {
      *
      * @return ProcessOutputStream
      */
-    public function getStdin(): ProcessOutputStream {
+    public function getStdin(): ProcessOutputStream
+    {
         if (!$this->handle) {
             throw new StatusError("Process has not been started.");
         }
@@ -223,7 +238,8 @@ class Process {
      *
      * @return ProcessInputStream
      */
-    public function getStdout(): ProcessInputStream {
+    public function getStdout(): ProcessInputStream
+    {
         if (!$this->handle) {
             throw new StatusError("Process has not been started.");
         }
@@ -236,7 +252,8 @@ class Process {
      *
      * @return ProcessInputStream
      */
-    public function getStderr(): ProcessInputStream {
+    public function getStderr(): ProcessInputStream
+    {
         if (!$this->handle) {
             throw new StatusError("Process has not been started.");
         }
diff --git a/lib/ProcessException.php b/lib/ProcessException.php
index 5abc128..5eb1e4a 100644
--- a/lib/ProcessException.php
+++ b/lib/ProcessException.php
@@ -2,5 +2,6 @@
 
 namespace Amp\Process;
 
-class ProcessException extends \Exception {
+class ProcessException extends \Exception
+{
 }
diff --git a/lib/ProcessInputStream.php b/lib/ProcessInputStream.php
index e3d5b13..d6e473b 100644
--- a/lib/ProcessInputStream.php
+++ b/lib/ProcessInputStream.php
@@ -11,7 +11,8 @@ use Amp\Failure;
 use Amp\Promise;
 use Amp\Success;
 
-class ProcessInputStream implements InputStream {
+class ProcessInputStream implements InputStream
+{
     /** @var Deferred */
     private $initialRead;
 
@@ -27,7 +28,8 @@ class ProcessInputStream implements InputStream {
     /** @var StreamException|null */
     private $error;
 
-    public function __construct(Promise $resourceStreamPromise) {
+    public function __construct(Promise $resourceStreamPromise)
+    {
         $resourceStreamPromise->onResolve(function ($error, $resourceStream) {
             if ($error) {
                 $this->error = new StreamException("Failed to launch process", 0, $error);
@@ -64,7 +66,8 @@ class ProcessInputStream implements InputStream {
      *
      * @throws PendingReadError Thrown if another read operation is still pending.
      */
-    public function read(): Promise {
+    public function read(): Promise
+    {
         if ($this->initialRead) {
             throw new PendingReadError;
         }
@@ -86,7 +89,8 @@ class ProcessInputStream implements InputStream {
         return $this->initialRead->promise();
     }
 
-    public function reference() {
+    public function reference()
+    {
         $this->referenced = true;
 
         if ($this->resourceStream) {
@@ -94,7 +98,8 @@ class ProcessInputStream implements InputStream {
         }
     }
 
-    public function unreference() {
+    public function unreference()
+    {
         $this->referenced = false;
 
         if ($this->resourceStream) {
@@ -102,7 +107,8 @@ class ProcessInputStream implements InputStream {
         }
     }
 
-    public function close() {
+    public function close()
+    {
         $this->shouldClose = true;
 
         if ($this->initialRead) {
diff --git a/lib/ProcessOutputStream.php b/lib/ProcessOutputStream.php
index 6211342..a86abe4 100644
--- a/lib/ProcessOutputStream.php
+++ b/lib/ProcessOutputStream.php
@@ -10,7 +10,8 @@ use Amp\Deferred;
 use Amp\Failure;
 use Amp\Promise;
 
-class ProcessOutputStream implements OutputStream {
+class ProcessOutputStream implements OutputStream
+{
     /** @var \SplQueue */
     private $queuedWrites;
 
@@ -23,7 +24,8 @@ class ProcessOutputStream implements OutputStream {
     /** @var StreamException|null */
     private $error;
 
-    public function __construct(Promise $resourceStreamPromise) {
+    public function __construct(Promise $resourceStreamPromise)
+    {
         $this->queuedWrites = new \SplQueue;
         $resourceStreamPromise->onResolve(function ($error, $resourceStream) {
             if ($error) {
@@ -55,7 +57,8 @@ class ProcessOutputStream implements OutputStream {
     }
 
     /** @inheritdoc */
-    public function write(string $data): Promise {
+    public function write(string $data): Promise
+    {
         if ($this->resourceStream) {
             return $this->resourceStream->write($data);
         }
@@ -75,7 +78,8 @@ class ProcessOutputStream implements OutputStream {
     }
 
     /** @inheritdoc */
-    public function end(string $finalData = ""): Promise {
+    public function end(string $finalData = ""): Promise
+    {
         if ($this->resourceStream) {
             return $this->resourceStream->end($finalData);
         }
@@ -96,7 +100,8 @@ class ProcessOutputStream implements OutputStream {
         return $deferred->promise();
     }
 
-    public function close() {
+    public function close()
+    {
         $this->shouldClose = true;
 
         if ($this->resourceStream) {
diff --git a/lib/StatusError.php b/lib/StatusError.php
index e5d6bca..0280edc 100644
--- a/lib/StatusError.php
+++ b/lib/StatusError.php
@@ -2,5 +2,6 @@
 
 namespace Amp\Process;
 
-class StatusError extends \Error {
+class StatusError extends \Error
+{
 }
diff --git a/test/ProcessTest.php b/test/ProcessTest.php
index 0d5b8c4..4f757a1 100644
--- a/test/ProcessTest.php
+++ b/test/ProcessTest.php
@@ -11,14 +11,16 @@ use Amp\Process\ProcessOutputStream;
 use Amp\Promise;
 use PHPUnit\Framework\TestCase;
 
-class ProcessTest extends TestCase {
+class ProcessTest extends TestCase
+{
     const CMD_PROCESS = \DIRECTORY_SEPARATOR === "\\" ? "cmd /c echo foo" : "echo foo";
     const CMD_PROCESS_SLOW = \DIRECTORY_SEPARATOR === "\\" ? "cmd /c ping -n 3 127.0.0.1 > nul" : "sleep 2";
 
     /**
      * @expectedException \Amp\Process\StatusError
      */
-    public function testMultipleExecution() {
+    public function testMultipleExecution()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS);
             $process->start();
@@ -26,7 +28,8 @@ class ProcessTest extends TestCase {
         });
     }
 
-    public function testIsRunning() {
+    public function testIsRunning()
+    {
         Loop::run(function () {
             $process = new Process(\DIRECTORY_SEPARATOR === "\\" ? "cmd /c exit 42" : "exit 42");
             $process->start();
@@ -40,7 +43,8 @@ class ProcessTest extends TestCase {
         });
     }
 
-    public function testExecuteResolvesToExitCode() {
+    public function testExecuteResolvesToExitCode()
+    {
         Loop::run(function () {
             $process = new Process(\DIRECTORY_SEPARATOR === "\\" ? "cmd /c exit 42" : "exit 42");
             $process->start();
@@ -52,7 +56,8 @@ class ProcessTest extends TestCase {
         });
     }
 
-    public function testCommandCanRun() {
+    public function testCommandCanRun()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS);
             $process->start();
@@ -62,7 +67,8 @@ class ProcessTest extends TestCase {
         });
     }
 
-    public function testProcessCanTerminate() {
+    public function testProcessCanTerminate()
+    {
         if (\DIRECTORY_SEPARATOR === "\\") {
             $this->markTestSkipped("Signals are not supported on Windows");
         }
@@ -76,28 +82,32 @@ class ProcessTest extends TestCase {
         });
     }
 
-    public function testGetWorkingDirectoryIsDefault() {
+    public function testGetWorkingDirectoryIsDefault()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS);
-            $this->assertSame(getcwd(), $process->getWorkingDirectory());
+            $this->assertSame(\getcwd(), $process->getWorkingDirectory());
         });
     }
 
-    public function testGetWorkingDirectoryIsCustomized() {
+    public function testGetWorkingDirectoryIsCustomized()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS, __DIR__);
             $this->assertSame(__DIR__, $process->getWorkingDirectory());
         });
     }
 
-    public function testGetEnv() {
+    public function testGetEnv()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS);
             $this->assertSame([], $process->getEnv());
         });
     }
 
-    public function testGetStdin() {
+    public function testGetStdin()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS);
             $process->start();
@@ -106,7 +116,8 @@ class ProcessTest extends TestCase {
         });
     }
 
-    public function testGetStdout() {
+    public function testGetStdout()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS);
             $process->start();
@@ -115,7 +126,8 @@ class ProcessTest extends TestCase {
         });
     }
 
-    public function testGetStderr() {
+    public function testGetStderr()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS);
             $process->start();
@@ -124,7 +136,8 @@ class ProcessTest extends TestCase {
         });
     }
 
-    public function testProcessEnvIsValid() {
+    public function testProcessEnvIsValid()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS, null, [
                 'test' => 'foobar',
@@ -140,7 +153,8 @@ class ProcessTest extends TestCase {
     /**
      * @expectedException \Error
      */
-    public function testProcessEnvIsInvalid() {
+    public function testProcessEnvIsInvalid()
+    {
         $process = new Process(self::CMD_PROCESS, null, [
             ['error_value']
         ]);
@@ -150,7 +164,8 @@ class ProcessTest extends TestCase {
      * @expectedException \Amp\Process\StatusError
      * @expectedExceptionMessage Process has not been started.
      */
-    public function testGetStdinIsStatusError() {
+    public function testGetStdinIsStatusError()
+    {
         $process = new Process(self::CMD_PROCESS, null, []);
         $process->getStdin();
     }
@@ -159,7 +174,8 @@ class ProcessTest extends TestCase {
      * @expectedException \Amp\Process\StatusError
      * @expectedExceptionMessage Process has not been started.
      */
-    public function testGetStdoutIsStatusError() {
+    public function testGetStdoutIsStatusError()
+    {
         $process = new Process(self::CMD_PROCESS, null, []);
         $process->getStdout();
     }
@@ -168,7 +184,8 @@ class ProcessTest extends TestCase {
      * @expectedException \Amp\Process\StatusError
      * @expectedExceptionMessage Process has not been started.
      */
-    public function testGetStderrIsStatusError() {
+    public function testGetStderrIsStatusError()
+    {
         $process = new Process(self::CMD_PROCESS, null, []);
         $process->getStderr();
     }
@@ -177,7 +194,8 @@ class ProcessTest extends TestCase {
      * @expectedException \Error
      * @expectedExceptionMessage Cloning is not allowed!
      */
-    public function testProcessCantBeCloned() {
+    public function testProcessCantBeCloned()
+    {
         $process = new Process(self::CMD_PROCESS);
         clone $process;
     }
@@ -186,7 +204,8 @@ class ProcessTest extends TestCase {
      * @expectedException \Amp\Process\ProcessException
      * @expectedExceptionMessage The process was killed
      */
-    public function testKillImmediately() {
+    public function testKillImmediately()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS_SLOW);
             $process->start();
@@ -199,7 +218,8 @@ class ProcessTest extends TestCase {
      * @expectedException \Amp\Process\ProcessException
      * @expectedExceptionMessage The process was killed
      */
-    public function testKillThenReadStdout() {
+    public function testKillThenReadStdout()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS_SLOW);
             $process->start();
@@ -219,7 +239,8 @@ class ProcessTest extends TestCase {
      * @expectedException \Amp\Process\StatusError
      * @expectedExceptionMessage Process has not been started.
      */
-    public function testProcessHasNotBeenStartedWithJoin() {
+    public function testProcessHasNotBeenStartedWithJoin()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS);
             yield $process->join();
@@ -230,7 +251,8 @@ class ProcessTest extends TestCase {
      * @expectedException \Amp\Process\StatusError
      * @expectedExceptionMessage Process has not been started.
      */
-    public function testProcessHasNotBeenStartedWithGetPid() {
+    public function testProcessHasNotBeenStartedWithGetPid()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS);
             yield $process->getPid();
@@ -241,7 +263,8 @@ class ProcessTest extends TestCase {
      * @expectedException \Amp\Process\StatusError
      * @expectedExceptionMessage Process is not running.
      */
-    public function testProcessIsNotRunningWithKill() {
+    public function testProcessIsNotRunningWithKill()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS);
             $process->kill();
@@ -252,7 +275,8 @@ class ProcessTest extends TestCase {
      * @expectedException \Amp\Process\StatusError
      * @expectedExceptionMessage Process is not running.
      */
-    public function testProcessIsNotRunningWithSignal() {
+    public function testProcessIsNotRunningWithSignal()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS);
             $process->signal(0);
@@ -263,24 +287,28 @@ class ProcessTest extends TestCase {
      * @expectedException \Amp\Process\StatusError
      * @expectedExceptionMessage Process has not been started.
      */
-    public function testProcessHasBeenStarted() {
+    public function testProcessHasBeenStarted()
+    {
         Loop::run(function () {
             $process = new Process(self::CMD_PROCESS);
             yield $process->join();
         });
     }
 
-    public function testCommand() {
+    public function testCommand()
+    {
         $process = new Process([self::CMD_PROCESS]);
         $this->assertSame(\implode(" ", \array_map("escapeshellarg", [self::CMD_PROCESS])), $process->getCommand());
     }
 
-    public function testOptions() {
+    public function testOptions()
+    {
         $process = new Process(self::CMD_PROCESS);
         $this->assertSame([], $process->getOptions());
     }
 
-    public function getProcessCounts(): array {
+    public function getProcessCounts(): array
+    {
         return \array_map(function (int $count): array {
             return [$count];
         }, \range(2, 32, 2));
@@ -291,7 +319,8 @@ class ProcessTest extends TestCase {
      *
      * @param int $count
      */
-    public function testSpawnMultipleProcesses(int $count) {
+    public function testSpawnMultipleProcesses(int $count)
+    {
         Loop::run(function () use ($count) {
             $processes = [];
             for ($i = 0; $i < $count; ++$i) {
@@ -309,7 +338,8 @@ class ProcessTest extends TestCase {
         });
     }
 
-    public function testReadOutputAfterExit() {
+    public function testReadOutputAfterExit()
+    {
         Loop::run(function () {
             $process = new Process(["php", __DIR__ . "/bin/worker.php"]);
             $process->start();
@@ -321,14 +351,15 @@ class ProcessTest extends TestCase {
         });
     }
 
-    public function testReadOutputAfterExitWithLongOutput() {
+    public function testReadOutputAfterExitWithLongOutput()
+    {
         Loop::run(function () {
             $process = new Process(["php", __DIR__ . "/bin/worker.php"]);
             $process->start();
 
             $count = 128 * 1024 + 1;
             $process->getStdin()->write("exit " . $count);
-            $this->assertSame(str_repeat(".", $count), yield new Message($process->getStdout()));
+            $this->assertSame(\str_repeat(".", $count), yield new Message($process->getStdout()));
 
             $this->assertSame(0, yield $process->join());
         });
diff --git a/test/bin/worker.php b/test/bin/worker.php
index 39e3f68..5bace37 100644
--- a/test/bin/worker.php
+++ b/test/bin/worker.php
@@ -1,15 +1,15 @@
 <?php
 
-$content = fread(STDIN, 1024);
+$content = \fread(STDIN, 1024);
 
-$command = explode(" ", $content);
+$command = \explode(" ", $content);
 
-if (count($command) !== 2) {
+if (\count($command) !== 2) {
     exit(1);
 }
 
 if ($command[0] === "exit") {
-    echo str_repeat(".", (int) $command[1]);
+    echo \str_repeat(".", (int) $command[1]);
     exit;
 }