amp/psalm.xml

<?xml version="1.0"?>
<psalm
        totallyTyped="false"
        errorLevel="2"
        phpVersion="7.0"
        resolveFromConfigFile="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="examples"/>
        <ignoreFiles>
            <directory name="examples/psalm"/>
        </ignoreFiles>
        <directory name="lib"/>
        <ignoreFiles>
            <directory name="vendor"/>
        </ignoreFiles>
    </projectFiles>

    <issueHandlers>
        <DuplicateClass>
            <errorLevel type="suppress">
                <file name="lib/CallableMaker.php"/>
            </errorLevel>
        </DuplicateClass>

        <StringIncrement>
            <errorLevel type="suppress">
                <directory name="examples"/>
                <directory name="lib"/>
            </errorLevel>
        </StringIncrement>

        <RedundantConditionGivenDocblockType>
            <errorLevel type="suppress">
                <directory name="lib"/>
            </errorLevel>
        </RedundantConditionGivenDocblockType>

        <DocblockTypeContradiction>
            <errorLevel type="suppress">
                <directory name="lib"/>
            </errorLevel>
        </DocblockTypeContradiction>

        <MissingClosureParamType>
            <errorLevel type="suppress">
                <directory name="examples"/>
                <directory name="lib"/>
            </errorLevel>
        </MissingClosureParamType>

        <MissingClosureReturnType>
            <errorLevel type="suppress">
                <directory name="examples"/>
                <directory name="lib"/>
            </errorLevel>
        </MissingClosureReturnType>

        <!-- Iterator is deprecated -->
        <DeprecatedClass>
            <errorLevel type="suppress">
                <directory name="examples/iterators"/>
                <file name="lib/Emitter.php"/>
                <file name="lib/functions.php"/>
                <file name="lib/Internal/PrivateIterator.php"/>
            </errorLevel>
        </DeprecatedClass>

        <!-- Iterator is deprecated -->
        <DeprecatedInterface>
            <errorLevel type="suppress">
                <directory name="examples/iterators"/>
                <file name="lib/Emitter.php"/>
                <file name="lib/functions.php"/>
                <file name="lib/Internal/PrivateIterator.php"/>
            </errorLevel>
        </DeprecatedInterface>
    </issueHandlers>

    <stubs>
        <file name="vendor/jetbrains/phpstorm-stubs/Ev/Ev.php"/>
        <file name="vendor/jetbrains/phpstorm-stubs/event/event.php"/>
        <file name="vendor/jetbrains/phpstorm-stubs/uv/UV.php"/>
        <file name="vendor/jetbrains/phpstorm-stubs/uv/uv_functions.php"/>
    </stubs>
</psalm>