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"
        errorLevel="1"
        strictBinaryOperands="true"
        allowStringToStandInForClass="false"
        findUnusedPsalmSuppress="true"
        resolveFromConfigFile="false"
>
    <projectFiles>
        <directory name="src"/>
        <directory name="tests"/>
    </projectFiles>

    <issueHandlers>
        <!-- Start Dead Code Config -->

        <!-- Dead code detection requires a few tricky mechanisms -->

        <!-- Of course the models and have are methods, they're used by consumers of the library -->
        <UnusedClass>
            <errorLevel type="suppress">
                <directory name="tests"/>
                <directory name="src/Stubs"/>
            </errorLevel>
        </UnusedClass>

        <PossiblyUnusedMethod>
            <errorLevel type="suppress">
                <directory name="src/Model"/>
                <directory name="src/Stubs"/>
            </errorLevel>
        </PossiblyUnusedMethod>
        <!-- End Dead Code Config-->

        <!-- Models have properties set the by serializer and are validated to ensure everything is set -->
        <MissingConstructor>
            <errorLevel type="suppress">
                <directory name="src/Model"/>
            </errorLevel>
        </MissingConstructor>

        <!-- Tests set properties in the setUp method -->
        <PropertyNotSetInConstructor>
            <errorLevel type="suppress">
                <directory name="tests"/>
            </errorLevel>
        </PropertyNotSetInConstructor>

        <!-- Variables are allowed to be mixed, other errors will be picked up when we try to use them anyway -->
        <MixedAssignment errorLevel="suppress"/>

        <!-- PhpStorm does not support generics yet, so we have to hint the result of ->parseRequest() -->
        <!-- @see https://youtrack.jetbrains.com/issue/WI-47158 -->
        <UnnecessaryVarAnnotation errorLevel="suppress" />
    </issueHandlers>
</psalm>