Fix dev dependency loading in travis

Author: schmengler

.travis/before_script.sh

@@ -29,7 +29,6 @@ composer config repositories.travis_to_test git https://github.com/$TRAVIS_REPO_
 composer require ${COMPOSER_PACKAGE_NAME}:dev-${TRAVIS_BRANCH}\#{$TRAVIS_COMMIT}
 
 # Install dev dependencies of module
-cat ./composer.json
 php ../.travis/merge-dev.php vendor/$COMPOSER_PACKAGE_NAME/composer.json ./composer.json | tee composer.json
 composer update
 

.travis/merge-dev.php

@@ -6,19 +6,21 @@
  */
 declare(strict_types=1);
 
-$fromFile = $argv[1];
-$toFile = $argv[2];
+$sourceFile = $argv[1];
+$targetFile = $argv[2];
 
-$fromJson = json_decode(file_get_contents($fromFile), true);
-$toJson = json_decode(file_get_contents($toFile), true);
-var_dump($fromJson, $toJson, json_last_error_msg());
+$sourceJson = json_decode(file_get_contents($sourceFile), true);
+$targetUnsafeJson = file_get_contents($targetFile);
+// Remove unnecessary PSR-0 section, it causes JSON syntax errors due to empty key
+$targetUnsafeJson = \preg_replace('#"psr-0": {.*?},#s', '', $targetUnsafeJson);
+$targetJson = json_decode($targetUnsafeJson, true);
 
-foreach ($fromJson['autoload-dev']['psr-4'] ?? [] as $key => $value) {
-    $pathPrefix = dirname($fromFile) . DIRECTORY_SEPARATOR;
-    $fromJson['autoload-dev']['psr-4'][$key] = $pathPrefix . $value;
+foreach ($sourceJson['autoload-dev']['psr-4'] ?? [] as $key => $value) {
+    $pathPrefix = dirname($sourceFile) . DIRECTORY_SEPARATOR;
+    $sourceJson['autoload-dev']['psr-4'][$key] = $pathPrefix . $value;
 }
 
-$toJson['require-dev'] = array_replace_recursive($toJson['require-dev'] ?? [], $fromJson['require-dev']);
-$toJson['autoload-dev'] = array_merge_recursive($toJson['autoload-dev'] ?? [], $fromJson['autoload-dev']);
+$targetJson['require-dev'] = array_replace_recursive($targetJson['require-dev'] ?? [], $sourceJson['require-dev']);
+$targetJson['autoload-dev'] = array_merge_recursive($targetJson['autoload-dev'] ?? [], $sourceJson['autoload-dev']);
 
-echo json_encode($toJson, JSON_PRETTY_PRINT);
+echo json_encode($targetJson, JSON_PRETTY_PRINT);