psalm.xml

<?xml version="1.0"?>
<psalm
    errorLevel="3"
    resolveFromConfigFile="true"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="https://getpsalm.org/schema/config"
    xsi:schemaLocation="https://getpsalm.org/schema/config vendor-bin/psalm/vendor/vimeo/psalm/config.xsd"
>
    <projectFiles>
        <directory name="src" />
        <directory name="tests" />
        <ignoreFiles>
            <directory name="vendor" />
            <directory name="vendor-bin" />
        </ignoreFiles>
    </projectFiles>
    <plugins>
        <pluginClass class="Psalm\PhpUnitPlugin\Plugin"/>
        <pluginClass class="Psalm\SymfonyPsalmPlugin\Plugin"/>
    </plugins>
    <issueHandlers>
        <InvalidArrayOffset>
            <errorLevel type="suppress">
                <directory name="tests" />
            </errorLevel>
        </InvalidArrayOffset>
        <InternalClass>
            <errorLevel type="suppress">
                <directory name="tests" />
            </errorLevel>
        </InternalClass>
        <InternalMethod>
            <errorLevel type="suppress">
                <directory name="tests" />
            </errorLevel>
        </InternalMethod>
        <!-- Workaround for https://github.com/vimeo/psalm/issues/7026 -->
        <ReservedWord errorLevel="suppress">
            <errorLevel type="suppress">
                <file name="src/DependencyInjection/MvoContaoGroupWidgetExtension.php" />
                <file name="src/EventListener/GroupWidgetListener.php" />
            </errorLevel>
        </ReservedWord>
    </issueHandlers>
</psalm>