Use type-safe comparison

Author: sebastianbergmann

src/Node/Builder.php

@@ -35,7 +35,7 @@ public function build(CodeCoverage $coverage): Directory
     private function addItems(Directory $root, array $items, array $tests, bool $cacheTokens): void
     {
         foreach ($items as $key => $value) {
-            if (\substr($key, -2) == '/f') {
+            if (\substr($key, -2) === '/f') {
                 $key = \substr($key, 0, -2);
 
                 if (\file_exists($root->getPath() . \DIRECTORY_SEPARATOR . $key)) {
@@ -100,7 +100,7 @@ private function buildDirectoryStructure(array $files): array
             for ($i = 0; $i < $max; $i++) {
                 $type = '';
 
-                if ($i == ($max - 1)) {
+                if ($i === ($max - 1)) {
                     $type = '/f';
                 }
 
@@ -190,7 +190,7 @@ private function reducePaths(array &$files): string
             for ($i = 0; $i < $max - 1; $i++) {
                 if (!isset($paths[$i][0]) ||
                     !isset($paths[$i + 1][0]) ||
-                    $paths[$i][0] != $paths[$i + 1][0]) {
+                    $paths[$i][0] !== $paths[$i + 1][0]) {
                     $done = true;
 
                     break;
@@ -200,7 +200,7 @@ private function reducePaths(array &$files): string
             if (!$done) {
                 $commonPath .= $paths[0][0];
 
-                if ($paths[0][0] != \DIRECTORY_SEPARATOR) {
+                if ($paths[0][0] !== \DIRECTORY_SEPARATOR) {
                     $commonPath .= \DIRECTORY_SEPARATOR;
                 }