psalm.xml

<?xml version="1.0"?>
<psalm
    totallyTyped="false"
    resolveFromConfigFile="true"
    allowStringToStandInForClass="true"
    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"
    autoloader="vendor/autoload.php"
>
    <projectFiles>
        <directory name="app" />
        <file name="public/index.php" />
        <ignoreFiles>
            <directory name="vendor" />
        </ignoreFiles>
    </projectFiles>

    <issueHandlers>
        <LessSpecificReturnType errorLevel="info" />

        <!-- level 3 issues - slightly lazy code writing, but provably low false-negatives -->

        <MissingReturnType errorLevel="info" />
        <MissingConstructor errorLevel="info" />
        <UnresolvableInclude errorLevel="info" />

        <!-- level 8 issues - some fatal errors in PHP -->
        <MethodSignatureMismatch errorLevel="info" />

    </issueHandlers>
</psalm>