psalm.xml

<?xml version="1.0" encoding="UTF-8"?>
<psalm xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="https://getpsalm.org/schema/config" errorLevel="2" findUnusedPsalmSuppress="true" resolveFromConfigFile="true" xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd" findUnusedBaselineEntry="true" findUnusedCode="false">
    <projectFiles>
        <directory name="src"/>
        <directory name="tests"/>
        <ignoreFiles>
            <directory name="vendor"/>
        </ignoreFiles>
    </projectFiles>
    <plugins>
        <pluginClass class="Psalm\SymfonyPsalmPlugin\Plugin"/>
        <pluginClass class="Psalm\PhpUnitPlugin\Plugin"/>
    </plugins>
    <issueHandlers>
        <!-- Psalm equivalent of PHPStan config `treatPhpDocTypesAsCertain: false` -->
        <DocblockTypeContradiction errorLevel="suppress"/>
        <RedundantConditionGivenDocblockType errorLevel="suppress"/>
        <UndefinedDocblockClass>
            <errorLevel type="suppress">
                <!-- https://github.com/symfony/symfony/issues/45609 -->
                <referencedClass name="UnitEnum"/>
            </errorLevel>
        </UndefinedDocblockClass>
        <InternalClass errorLevel="suppress"/>
        <InternalMethod errorLevel="suppress"/>
        <InternalProperty errorLevel="suppress"/>
        <UndefinedInterfaceMethod>
            <errorLevel type="suppress">
                <!-- https://github.com/psalm/psalm-plugin-symfony/issues/287 -->
                <referencedMethod name="Symfony\Component\Console\Helper\HelperInterface::ask"/>
            </errorLevel>
        </UndefinedInterfaceMethod>
        <MissingClassConstType errorLevel="suppress"/>
    </issueHandlers>
</psalm>