Psalm cleanup pass.

src/Formatter/Hook_Formatter.php

@@ -25,7 +25,14 @@ class Hook_Formatter {
 	}
 
 	/**
+	 * @template Callback as string|object|array
+	 * @template AcceptedArgs as int
+	 * @template Hook as array{function: Callback, accepted_args: AcceptedArgs}
+	 * @template Priority as array-key
+	 * @template Hooks as array<Priority, array<Hook>>
+	 *
 	 * @param \WP_Hook|array $hook Hook instance.
+	 * @psalm-param \WP_Hook|Hooks $hook
 	 *
 	 * @return array
 	 */
@@ -34,6 +41,7 @@ class Hook_Formatter {
 		$callbacks = [];
 
 		if ( $hook instanceof \WP_Hook ) {
+			/** @psalm-var Hooks $hook->callbacks */
 			$hook = $hook->callbacks;
 		}
 
@@ -43,9 +51,12 @@ class Hook_Formatter {
 
 		ksort( $hook );
 
+		/** @psalm-suppress InvalidArgument */
 		$functions = array_merge( ...$hook );
 
+		/** @psalm-var Hook[] $functions */
 		foreach ( $functions as $function ) {
+			/** @psalm-var Hook $function */
 			$callback = $this->get_callback_name( $function['function'], $function['accepted_args'] );
 
 			if ( false !== strpos( $callback, 'Hook_Collector' ) ) {
@@ -61,27 +72,27 @@ class Hook_Formatter {
 	/**
 	 * @param string|object|array $callback Hook callback.
 	 * @param int                 $args     Number of accepted arguments.
-	 *
-	 * @return string
 	 */
 	protected function get_callback_name( $callback, int $args ): string {
 
 		switch ( gettype( $callback ) ) {
 			case 'object':
-				$callback = $this->get_class_name( $callback );
+				$name = $this->get_class_name( $callback );
 				break;
 
 			case 'array':
-				$class    = is_string( $callback[0] )
+				/** @psalm-var array{0: object|string, 1: string} $callback */
+				$class = is_string( $callback[0] )
 					? $callback[0] . '::'
 					: $this->get_class_name( $callback[0] ) . '->';
-				$callback = $class . $callback[1];
+				$name  = $class . $callback[1];
 				break;
+
+			default:
+				$name = $callback;
 		}
 
-		$callback .= ( 1 === $args ) ? '' : "({$args})";
-
-		return $callback;
+		return $name . ( ( 1 === $args ) ? '' : "({$args})" );
 	}
 
 	/**
@@ -91,7 +102,7 @@ class Hook_Formatter {
 	 */
 	protected function get_class_name( $object ): string {
 
-		if ( is_a( $object, 'CLosure' ) ) {
+		if ( $object instanceof \Closure ) {
 			$class = new \ReflectionFunction( $object );
 
 			return 'closure from ' . $this->shorten_path( $class->getFileName() ) . ':' . $class->getStartLine();

src/Manager/Load_Order_Manager.php

@@ -21,8 +21,6 @@ class Load_Order_Manager {
 	 * Reorder active plugins so Laps is first and starts timing load early.
 	 *
 	 * @param array $plugins Filtered array of active plugins’ basenames.
-	 *
-	 * @return array
 	 */
 	public function pre_update_option_active_plugins( array $plugins ): array {
 

src/Plugin.php

@@ -20,6 +20,7 @@ class Plugin extends Container {
 
 	/**
 	 * @param array $values Configuration values to apply.
+	 * @psalm-param array<string, mixed> $values
 	 *
 	 * @psalm-suppress MixedArgument
 	 * @psalm-suppress MixedAssignment

src/Provider/Record_Provider.php

@@ -42,7 +42,14 @@ class Record_Provider implements ServiceProviderInterface, Bootable_Provider_Int
 			return new Lazy_Proxy_Collector( $laps['collectors'] );
 		};
 
+		/**
+		 * @psalm-suppress MixedInferredReturnType
+		 */
 		$pimple['records'] = function ( Plugin $laps ): array {
+			/**
+			 * @psalm-suppress MixedMethodCall
+			 * @psalm-suppress MixedReturnStatement
+			 */
 			return $laps['records.lazy']->get_records();
 		};
 	}

src/Record/Collector/Hook_Collector.php

@@ -20,13 +20,19 @@ class Hook_Collector extends Stopwatch_Collector {
 	/** @var array $events */
 	protected $events = [];
 
-	/** @var array */
+	/**
+	 * @var array $callbacks
+	 * @psalm-var array<string, \WP_Hook> $callbacks
+	 */
 	protected $callbacks = [];
 
 	/** @var Hook_Formatter */
 	protected $formatter;
 
-	/** @var array $calls Tracks number of calls for recurrent events. */
+	/**
+	 * @var array $calls Tracks number of calls for recurrent events.
+	 * @psalm-var array<string, int> $calls
+	 */
 	private $calls = [];
 
 	/**
@@ -55,7 +61,7 @@ class Hook_Collector extends Stopwatch_Collector {
 	/**
 	 * Time the point between network/MU plugins and regular if network activated.
 	 */
-	public function muplugins_loaded() {
+	public function muplugins_loaded(): void {
 		$this->stop( 'Network & MU Plugins Load' );
 		$this->start( 'Plugins Load', 'plugin' );
 	}
@@ -97,6 +103,9 @@ class Hook_Collector extends Stopwatch_Collector {
 	 * @param string|null $stop           Stop hook name (defaults to start name). Pass empty string to ignore.
 	 * @param int         $start_priority Start hook priority (defaults to -1).
 	 * @param int         $stop_priority  Stop hook priority (defaults to max int).
+	 *
+	 * @psalm-suppress MissingClosureReturnType
+	 * @psalm-suppress MissingClosureParamType
 	 */
 	private function add_event(
 		string $event,
@@ -116,11 +125,13 @@ class Hook_Collector extends Stopwatch_Collector {
 				$event .= $this->get_count_suffix( $event, true );
 
 				if ( 'Sidebar' === $event ) {
+					/** @var string $input */
 					$event = $input;
 				}
 
 				if ( $start === $stop ) {
 					global $wp_filter;
+					/** @psalm-var array<string, \WP_Hook> $wp_filter */
 					$this->callbacks[ $event ] = $wp_filter[ $start ];
 				}
 
@@ -136,6 +147,7 @@ class Hook_Collector extends Stopwatch_Collector {
 				$event .= $this->get_count_suffix( $event );
 
 				if ( 'Sidebar' === $event ) {
+					/** @var string $input */
 					$event = $input;
 				}
 

src/Record/Collector/Http_Collector.php

@@ -16,7 +16,10 @@ class Http_Collector extends Stopwatch_Collector {
 	/** @var Backtrace_Formatter */
 	private $formatter;
 
-	/** @var array */
+	/**
+	 * @var array $callers
+	 * @psalm-var array<string, string> $callers
+	 */
 	private $callers = [];
 
 	/**
@@ -39,7 +42,7 @@ class Http_Collector extends Stopwatch_Collector {
 	 * @param array                 $args  HTTP request arguments.
 	 * @param string                $url   The request URL.
 	 *
-	 * @return boolean
+	 * @return false|array|\WP_Error
 	 */
 	public function pre_http_request( $false, array $args, string $url ) {
 

src/Record/Collector/Plugin_Load_Collector.php

@@ -54,10 +54,8 @@ class Plugin_Load_Collector implements Record_Collector_Interface {
 	 * Converts recorded information into a Record instance.
 	 *
 	 * @param array $entry Data entry for the plugin.
-	 *
-	 * @return Record_Interface
 	 */
-	private function create_record( array $entry ): Record_Interface {
+	private function create_record( array $entry ): Record {
 		return new Record(
 			plugin_basename( $entry['name'] ),
 			$entry['origin'],

src/Record/Collector/Sql_Collector.php

@@ -8,6 +8,8 @@ use Rarst\Laps\Record\Record;
 
 /**
  * Processes SQL events from data logged by wpdb.
+ *
+ * @template QueryData as array{0: string, 1: float, 2: string, 3: float}
  */
 class Sql_Collector implements Record_Collector_Interface {
 
@@ -59,11 +61,13 @@ class Sql_Collector implements Record_Collector_Interface {
 
 		global $wpdb;
 
+		/** @psalm-suppress MixedPropertyFetch */
 		if ( empty( $wpdb->queries ) ) {
 			return [];
 		}
 
 		/** @var array $wpdb->queries */
+		/** @psalm-var array<int, QueryData> $wpdb->queries */
 		$records = array_filter( array_map( [ $this, 'transform' ], array_keys( $wpdb->queries ), $wpdb->queries ) );
 
 		return $records;

src/Record/Collector/Stopwatch_Collector.php

@@ -51,6 +51,7 @@ class Stopwatch_Collector implements Record_Collector_Interface {
 	 */
 	public function get_records(): array {
 
+		/** @psalm-var array<string, StopwatchEvent> $events */
 		$events = $this->stopwatch->getSectionEvents( '__root__' );
 
 		/** @var string $name */