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"
    errorBaseline="psalm-baseline.xml"
    errorLevel="1"
    findUnusedVariablesAndParams="true"
    resolveFromConfigFile="true"
    strictBinaryOperands="true"
>
    <plugins>
        <pluginClass class="Psalm\PhpUnitPlugin\Plugin" />
    </plugins>

    <projectFiles>
        <directory name="src/" />
        <ignoreFiles>
            <directory name="vendor/" />
        </ignoreFiles>
    </projectFiles>
</psalm>