psalm/phpcs.xml

<?xml version="1.0"?>
<ruleset name="PHP_CodeSniffer">
    <rule ref="PSR2" />

    <file>bin/</file>
    <file>src/</file>
    <file>tests/</file>

    <!-- This is a vendor file that we don't want to bother linting. -->
    <exclude-pattern>src/Psalm/CallMap.php</exclude-pattern>
    <exclude-pattern>src/Psalm/Visitor/SimpleNameResolver.php</exclude-pattern>

    <!-- These are just examples and stub classes/files, so it doesn't really matter if they're PSR-2 compliant. -->
    <exclude-pattern>src/Psalm/Stubs/</exclude-pattern>
    <exclude-pattern>tests/stubs/</exclude-pattern>
    <rule ref="Generic.Files.LineLength">
        <exclude-pattern>tests</exclude-pattern>
     </rule>
</ruleset>