psalm-plugin/psalm.xml

<?xml version="1.0"?>
<psalm totallyTyped="true" resolveFromConfigFile="true" forbidEcho="true" strictBinaryOperands="true" phpVersion="7.4" allowPhpStormGenerics="true" allowStringToStandInForClass="true" rememberPropertyAssignmentsAfterCall="false" skipChecksOnUnresolvableIncludes="false" checkForThrowsDocblock="true" checkForThrowsInGlobalScope="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">
    <projectFiles>
        <directory name="src" />
        <ignoreFiles>
            <directory name="vendor" />
        </ignoreFiles>
    </projectFiles>

    <issueHandlers>
        <DuplicateFunction errorLevel="suppress" />

        <LessSpecificReturnType errorLevel="error" />
        <DeprecatedMethod errorLevel="error" />
        <DeprecatedProperty errorLevel="error" />
        <DeprecatedClass errorLevel="error" />
        <DeprecatedConstant errorLevel="error" />
        <DeprecatedInterface errorLevel="error" />
        <DeprecatedTrait errorLevel="error" />
        <ForbiddenCode errorLevel="error" />
        <InternalMethod errorLevel="error" />
        <InternalProperty errorLevel="error" />
        <InternalClass errorLevel="error" />
        <MissingClosureReturnType errorLevel="error" />
        <MissingReturnType errorLevel="error" />
        <MissingPropertyType errorLevel="error" />
        <InvalidDocblock errorLevel="error" />
        <PropertyNotSetInConstructor errorLevel="error" />
        <MissingConstructor errorLevel="error" />
        <MissingClosureParamType errorLevel="error" />
        <MissingParamType errorLevel="error" />
        <DocblockTypeContradiction errorLevel="error" />
        <RawObjectIteration errorLevel="error" />
        <InvalidStringClass errorLevel="error" />
        <UnresolvableInclude errorLevel="error" />

        <!-- Redundant expressions should not be considered errors. -->
        <!-- Sometimes we want to enforce things at runtime, as well using static analysis -->
        <RedundantConditionGivenDocblockType errorLevel="suppress" />
        <RedundantCondition errorLevel="suppress" />
        <RedundantCast errorLevel="suppress" />
        <RedundantCastGivenDocblockType errorLevel="suppress" />
    </issueHandlers>

    <plugins>
        <pluginClass class="Psl\Psalm\Plugin" />
    </plugins>
</psalm>