psalm.xml

<?xml version="1.0"?>
<psalm
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="https://getpsalm.org/schema/config"
    xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
    cacheDirectory=".build/psalm"
    errorBaseline="psalm-baseline.xml"
    errorLevel="1"
    findUnusedBaselineEntry="true"
    findUnusedCode="true"
    findUnusedVariablesAndParams="true"
    resolveFromConfigFile="true"
    strictBinaryOperands="true"
>
    <plugins>
        <pluginClass class="Psalm\PhpUnitPlugin\Plugin" />
    </plugins>

    <projectFiles>
        <directory name="config/" />
        <directory name="example/" />
        <directory name="src/" />
        <directory name="test/" />
        <file name="bin/console" />
        <file name=".php-cs-fixer.php" />
        <file name="rector.php" />
    </projectFiles>
</psalm>