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Upgrading from Psalm 5 to Psalm 6

Changed

  • The minimum PHP version was raised to PHP 8.1.17.

  • [BC] The configuration settings ignoreInternalFunctionFalseReturn and ignoreInternalFunctionNullReturn are now defaulted to false

  • [BC] Switched the internal representation of list<T> and non-empty-list<T> from the TList and TNonEmptyList classes to an unsealed list shape: the TList, TNonEmptyList and TCallableList classes were removed. Nothing will change for users: the list<T> and non-empty-list<T> syntax will remain supported and its semantics unchanged. Psalm 5 already deprecates the TList, TNonEmptyList and TCallableList classes: use \Psalm\Type::getListAtomic, \Psalm\Type::getNonEmptyListAtomic and \Psalm\Type::getCallableListAtomic to instantiate list atomics, or directly instantiate TKeyedArray objects with is_list=true where appropriate.

  • [BC] The only optional boolean parameter of TKeyedArray::getGenericArrayType was removed, and was replaced with a string parameter with a different meaning.

  • [BC] The TDependentListKey type was removed and replaced with an optional property of the TIntRange type.

  • [BC] TCallableArray and TCallableList removed and replaced with TCallableKeyedArray.

  • [BC] Class Psalm\Issue\MixedInferredReturnType was removed

  • [BC] Value of constant Psalm\Type\TaintKindGroup::ALL_INPUT changed to reflect new TaintKind::INPUT_EXTRACT, TaintKind::INPUT_SLEEP and TaintKind::INPUT_XPATH have been added. Accordingly, default values for $taint parameters of Psalm\Codebase::addTaintSource() and Psalm\Codebase::addTaintSink() have been changed as well.

  • [BC] Property Config::$shepherd_host was replaced with Config::$shepherd_endpoint

  • [BC] Methods Codebase::getSymbolLocation() and Codebase::getSymbolInformation() were replaced with Codebase::getSymbolLocationByReference()

  • [BC] Method Psalm\Type\Atomic\TKeyedArray::getList() was removed

  • [BC] Method Psalm\Storage\FunctionLikeStorage::getSignature() was replaced with FunctionLikeStorage::getCompletionSignature()

  • [BC] Property Psalm\Storage\FunctionLikeStorage::$unused_docblock_params was replaced with FunctionLikeStorage::$unused_docblock_parameters

  • [BC] Method Plugin\Shepherd::getCurlErrorMessage() was removed

  • [BC] Property Config::$find_unused_code changed default value from false to true

  • [BC] Property Config::$find_unused_baseline_entry changed default value from false to true

  • [BC] The return type of Psalm\Internal\LanguageServer\ProtocolWriter#write() changed from Amp\Promisetovoid` due to the switch to Amp v3

  • [BC] All parameters, properties and return typehints are now strictly typed.

  • [BC] strict_types is now applied to all files of the Psalm codebase.

  • [BC] Properties Psalm\Type\Atomic\TLiteralFloat::$value and Psalm\Type\Atomic\TLiteralInt::$value became typed (float and int respectively)

  • [BC] Property Psalm\Storage\EnumCaseStorage::$value changed from int|string|null to TLiteralInt|TLiteralString|null

  • [BC] Psalm\CodeLocation\Raw, Psalm\CodeLocation\ParseErrorLocation, Psalm\CodeLocation\DocblockTypeLocation, Psalm\Report\CountReport, Psalm\Type\Atomic\TNonEmptyArray are now all final.

  • [BC] Psalm\Config is now final.

  • [BC] The return type of Psalm\Plugin\ArgTypeInferer::infer changed from Union|false to Union|null

  • [BC] The extra_types property and setIntersectionTypes method of Psalm\Type\Atomic\TTypeAlias were removed.

  • [BC] Methods convertSeverity and calculateFingerprint of Psalm\Report\CodeClimateReport were removed.

Upgrading from Psalm 4 to Psalm 5

Changed

  • [BC] Shaped arrays can now be sealed: this brings many assertion improvements and bugfixes, see the docs for more info.

  • [BC] All atomic types, Psalm\Type\Union, Psalm\CodeLocation and storages are fully immutable, use the new setter methods or the new constructors to change properties: these setter methods will return new instances without altering the original instance.
    Full immutability fixes a whole class of bugs that occurred in multithreaded mode, you can now feel free to use --threads=$(nproc) ;) Full immutability also makes Psalm run faster, even in single-threaded mode, by removing all superfluous clones! For this purpose, __clone was also made private, forbidding the cloning of atomics, unions and storages (an old and brittle pattern used to avoid side-effects caused by mutability).

  • [BC] Psalm\Type\Unions are now fully immutable, pre-existing in-place mutator methods were removed and moved into Psalm\Type\MutableUnion.
    To modify a union type, usage of the new setter methods in Psalm\Type\Union is strongly recommended.
    When many consecutive property sets are required, use Psalm\Type\Union::setProperties method to avoid creating a new instance for each set.
    All setter methods will return a new instance of the type without altering the original instance.
    If many property sets are required throughout multiple methods on a single Union instance, use Psalm\Type\Union::getBuilder to turn a Psalm\Type\Union into a Psalm\Type\MutableUnion: once you're done, use Psalm\Type\MutableUnion::freeze to get a new Psalm\Type\Union.
    Methods removed from Psalm\Type\Union and moved into Psalm\Type\MutableUnion:

    • replaceTypes
    • addType
    • removeType
    • substitute
    • replaceClassLike

  • [BC] Psalm\Type\TypeNode::getChildNodes() was removed, use Psalm\Type\Union::getAtomicTypes() to get the types of a union, and use Psalm\Type\TypeVisitor with the new Psalm\Type\MutableTypeVisitor class to iterate over a type tree.

  • [BC] Psalm\Type\TypeVisitor is now fully immutable, implementors MUST NOT alter type nodes during iteration: use Psalm\Type\MutableTypeVisitor if type node mutation is desired.

  • [BC] TPositiveInt has been removed and replaced by TIntRange

  • [BC] Property Psalm\Config::$cache_directory is now internal. Use Psalm\Config::getCacheDirectory() instead.

  • [BC] The parameter $php_version of Psalm\Type\Atomic::create() renamed to $analysis_php_version_id and changed from array|null to int|null. Previously it accepted PHP version as array{major_version, minor_version} while now it accepts version ID, similar to how PHP_VERSION_ID is calculated.

  • [BC] The parameter $php_version of Psalm\Type::parseString() renamed to $analysis_php_version_id and changed from array|null to int|null. Previously it accepted PHP version as array{major_version, minor_version} while now it accepts version ID.

  • [BC] Parameter 0 of canBeFullyExpressedInPhp() of the classes listed below changed name from php_major_version to analysis_php_version_id. Previously it accepted major PHP version as int (e.g. 7), while now it accepts version ID. Classes affected:

    • Psalm\Type\Atomic
    • Psalm\Type\Atomic\Scalar
    • Psalm\Type\Atomic\TArray
    • Psalm\Type\Atomic\TArrayKey
    • Psalm\Type\Atomic\TCallable
    • Psalm\Type\Atomic\TCallableObject
    • Psalm\Type\Atomic\TCallableString
    • Psalm\Type\Atomic\TClassConstant
    • Psalm\Type\Atomic\TClassString
    • Psalm\Type\Atomic\TClassStringMap
    • Psalm\Type\Atomic\TClosedResource
    • Psalm\Type\Atomic\TClosure
    • Psalm\Type\Atomic\TConditional
    • Psalm\Type\Atomic\TDependentGetClass
    • Psalm\Type\Atomic\TDependentGetDebugType
    • Psalm\Type\Atomic\TDependentGetType
    • Psalm\Type\Atomic\TDependentListKey
    • Psalm\Type\Atomic\TEnumCase
    • Psalm\Type\Atomic\TFalse
    • Psalm\Type\Atomic\TGenericObject
    • Psalm\Type\Atomic\TIntMask
    • Psalm\Type\Atomic\TIntMaskOf
    • Psalm\Type\Atomic\TIntRange
    • Psalm\Type\Atomic\TIterable
    • Psalm\Type\Atomic\TKeyedArray
    • Psalm\Type\Atomic\TKeyOf
    • Psalm\Type\Atomic\TList
    • Psalm\Type\Atomic\TLiteralClassString
    • Psalm\Type\Atomic\TLowercaseString
    • Psalm\Type\Atomic\TMixed
    • Psalm\Type\Atomic\TNamedObject
    • Psalm\Type\Atomic\TNever
    • Psalm\Type\Atomic\TNonEmptyLowercaseString
    • Psalm\Type\Atomic\TNonspecificLiteralInt
    • Psalm\Type\Atomic\TNonspecificLiteralString
    • Psalm\Type\Atomic\TNull
    • Psalm\Type\Atomic\TNumeric
    • Psalm\Type\Atomic\TNumericString
    • Psalm\Type\Atomic\TObject
    • Psalm\Type\Atomic\TObjectWithProperties
    • Psalm\Type\Atomic\TResource
    • Psalm\Type\Atomic\TScalar
    • Psalm\Type\Atomic\TTemplateIndexedAccess
    • Psalm\Type\Atomic\TTemplateParam
    • Psalm\Type\Atomic\TTraitString
    • Psalm\Type\Atomic\TTrue
    • Psalm\Type\Atomic\TTypeAlias
    • Psalm\Type\Atomic\TValueOf
    • Psalm\Type\Atomic\TVoid
    • Psalm\Type\Union

  • [BC] Parameter 3 of toPhpString() of methods listed below changed name from php_major_version to analysis_php_version_id. Previously it accepted major PHP version as int (e.g. 7), while now it accepts version ID. Classes affected:

    • Psalm\Type\Atomic
    • Psalm\Type\Atomic\CallableTrait
    • Psalm\Type\Atomic\TAnonymousClassInstance
    • Psalm\Type\Atomic\TArray
    • Psalm\Type\Atomic\TArrayKey
    • Psalm\Type\Atomic\TBool
    • Psalm\Type\Atomic\TCallable
    • Psalm\Type\Atomic\TCallableObject
    • Psalm\Type\Atomic\TClassConstant
    • Psalm\Type\Atomic\TClassString
    • Psalm\Type\Atomic\TClassStringMap
    • Psalm\Type\Atomic\TClosedResource
    • Psalm\Type\Atomic\TConditional
    • Psalm\Type\Atomic\TEmpty
    • Psalm\Type\Atomic\TEnumCase
    • Psalm\Type\Atomic\TFloat
    • Psalm\Type\Atomic\TGenericObject
    • Psalm\Type\Atomic\TInt
    • Psalm\Type\Atomic\TIterable
    • Psalm\Type\Atomic\TKeyedArray
    • Psalm\Type\Atomic\TKeyOf
    • Psalm\Type\Atomic\TList
    • Psalm\Type\Atomic\TLiteralClassString
    • Psalm\Type\Atomic\TMixed
    • Psalm\Type\Atomic\TNamedObject
    • Psalm\Type\Atomic\TNever
    • Psalm\Type\Atomic\TNull
    • Psalm\Type\Atomic\TNumeric
    • Psalm\Type\Atomic\TObject
    • Psalm\Type\Atomic\TObjectWithProperties
    • Psalm\Type\Atomic\TResource
    • Psalm\Type\Atomic\TScalar
    • Psalm\Type\Atomic\TString
    • Psalm\Type\Atomic\TTemplateIndexedAccess
    • Psalm\Type\Atomic\TTemplateParam
    • Psalm\Type\Atomic\TTraitString
    • Psalm\Type\Atomic\TTypeAlias
    • Psalm\Type\Atomic\TValueOf
    • Psalm\Type\Atomic\TVoid
    • Psalm\Type\Union

  • While not a BC break per se, all classes / interfaces / traits / enums under Psalm\Internal namespace are now marked @internal.

  • [BC] Parameter 1 of Psalm\Type\Atomic\TNamedObject::__construct() changed name from was_static to is_static

  • [BC] Parameter 1 of Psalm\Type\Atomic\TAnonymousClassInstance::__construct() changed name from was_static to is_static

  • [BC] Parameter 5 of Psalm\Type::getStringFromFQCLN() changed name from was_static to is_static

  • [BC] Property Psalm\Type\Atomic\TNamedObject::$was_static was renamed to $is_static

  • [BC] Method Psalm\Type\Union::isFormerStaticObject() was renamed to isStaticObject()

  • [BC] Method Psalm\Type\Union::hasFormerStaticObject() was renamed to hasStaticObject()

  • [BC] Function assertions (from @psalm-assert Foo $bar) have been converted from strings to specific Assertion objects.

  • [BC] Property Psalm\Storage\ClassLikeStorage::$invalid_dependencies changed from array<string> to array<string, true>.

  • [BC] Property Psalm\Storage\ClassLikeStorage::$template_extended_count was renamed to $template_type_extends_count, its type was changed from int|null to array<string, int>|null.

  • [BC] Event classes became final and their constructors were marked @internal:

    • Psalm\Plugin\EventHandler\Event\AddRemoveTaintsEvent
    • Psalm\Plugin\EventHandler\Event\AfterAnalysisEvent
    • Psalm\Plugin\EventHandler\Event\AfterClassLikeAnalysisEvent
    • Psalm\Plugin\EventHandler\Event\AfterClassLikeExistenceCheckEvent
    • Psalm\Plugin\EventHandler\Event\AfterClassLikeVisitEvent
    • Psalm\Plugin\EventHandler\Event\AfterCodebasePopulatedEvent
    • Psalm\Plugin\EventHandler\Event\AfterEveryFunctionCallAnalysisEvent
    • Psalm\Plugin\EventHandler\Event\AfterExpressionAnalysisEvent
    • Psalm\Plugin\EventHandler\Event\AfterFileAnalysisEvent
    • Psalm\Plugin\EventHandler\Event\AfterFunctionCallAnalysisEvent
    • Psalm\Plugin\EventHandler\Event\AfterFunctionLikeAnalysisEvent
    • Psalm\Plugin\EventHandler\Event\AfterMethodCallAnalysisEvent
    • Psalm\Plugin\EventHandler\Event\AfterStatementAnalysisEvent
    • Psalm\Plugin\EventHandler\Event\BeforeFileAnalysisEvent
    • Psalm\Plugin\EventHandler\Event\FunctionExistenceProviderEvent
    • Psalm\Plugin\EventHandler\Event\FunctionParamsProviderEvent
    • Psalm\Plugin\EventHandler\Event\FunctionReturnTypeProviderEvent
    • Psalm\Plugin\EventHandler\Event\MethodExistenceProviderEvent
    • Psalm\Plugin\EventHandler\Event\MethodParamsProviderEvent
    • Psalm\Plugin\EventHandler\Event\MethodReturnTypeProviderEvent
    • Psalm\Plugin\EventHandler\Event\MethodVisibilityProviderEvent
    • Psalm\Plugin\EventHandler\Event\PropertyExistenceProviderEvent
    • Psalm\Plugin\EventHandler\Event\PropertyTypeProviderEvent
    • Psalm\Plugin\EventHandler\Event\PropertyVisibilityProviderEvent
    • Psalm\Plugin\EventHandler\Event\StringInterpreterEvent

  • [BC] Atomic::__toString() used to return a string representation of the type that was using double quotes (") to quote literals. This is now using single quotes (') to be more aligned with the rest of the codebase.

  • [BC] Atomic::__toString() is now final

  • [BC] Atomic::__toString() now returns a more detailed version of the type (it calls getId() under the hood)

  • [BC] Atomic::getId() has now a first param $exact. Calling the method with false will return a less detailed version of the type in some cases (similarly to what __toString used to return)

  • [BC] To remove a variable from the context, use Context::remove(). Calling unset($context->vars_in_scope[$var_id]) can cause problems when using references.

  • [BC] TKeyOfClassConstant has been renamed to TKeyOf.

  • [BC] TValueOfClassConstant has been renamed to TValueOf.

  • [BC] TKeyOfTemplate base class has been changed from Scalar to Atomic.

  • [BC] Class Psalm\FileManipulation became final

  • [BC] Class Psalm\Context became final

  • [BC] Psalm\Context#__construct() was marked @internal

  • [BC] Class Psalm\PluginRegistrationSocket became final

  • [BC] Class Psalm\PluginFileExtensionsSocket became final

  • [BC] Class Psalm\Config\IssueHandler became final

  • [BC] Psalm\Config\IssueHandler was marked @internal

  • [BC] Class Psalm\Config\ProjectFileFilter became final

  • [BC] Psalm\Config\ProjectFileFilter was marked @internal

  • [BC] Class Psalm\Config\Creator became final

  • [BC] Psalm\Config\Creator was marked @internal

  • [BC] Class Psalm\Config\TaintAnalysisFileFilter became final

  • [BC] Psalm\Config\TaintAnalysisFileFilter was marked @internal

  • [BC] Class Psalm\Config\ErrorLevelFileFilter became final

  • [BC] Psalm\Config\ErrorLevelFileFilter was marked @internal

  • [BC] Class Psalm\FileBasedPluginAdapter became final

  • [BC] Psalm\FileBasedPluginAdapter was marked @internal

  • [BC] Class Psalm\Exception\InvalidMethodOverrideException became final

  • [BC] Class Psalm\Exception\UnpopulatedClasslikeException became final

  • [BC] Class Psalm\Exception\ConfigNotFoundException became final

  • [BC] Class Psalm\Exception\TypeParseTreeException became final

  • [BC] Class Psalm\Exception\ComplicatedExpressionException became final

  • [BC] Class Psalm\Exception\ScopeAnalysisException became final

  • [BC] Class Psalm\Exception\InvalidClasslikeOverrideException became final

  • [BC] Class Psalm\Exception\CircularReferenceException became final

  • [BC] Class Psalm\Exception\UnsupportedIssueToFixException became final

  • [BC] Class Psalm\Exception\CodeException became final

  • [BC] Class Psalm\Exception\RefactorException became final

  • [BC] Class Psalm\Exception\UnpreparedAnalysisException became final

  • [BC] Class Psalm\Exception\IncorrectDocblockException became final

  • [BC] Class Psalm\Exception\UnanalyzedFileException became final

  • [BC] Class Psalm\Exception\UnresolvableConstantException became final

  • [BC] Class Psalm\Exception\FileIncludeException became final

  • [BC] Class Psalm\Exception\ConfigCreationException became final

  • [BC] Class Psalm\Aliases became final

  • [BC] Psalm\Aliases#__construct() was marked @internal

  • [BC] Class Psalm\Codebase became final

  • [BC] Psalm\Codebase#__construct() was marked @internal

  • [BC] Class Psalm\Progress\VoidProgress became final

  • [BC] Class Psalm\Progress\DebugProgress became final

  • [BC] Class Psalm\Report\JsonReport became final

  • [BC] Class Psalm\Report\SonarqubeReport became final

  • [BC] Class Psalm\Report\CodeClimateReport became final

  • [BC] Class Psalm\Report\CheckstyleReport became final

  • [BC] Class Psalm\Report\JsonSummaryReport became final

  • [BC] Class Psalm\Report\XmlReport became final

  • [BC] Class Psalm\Report\EmacsReport became final

  • [BC] Class Psalm\Report\ConsoleReport became final

  • [BC] Class Psalm\Report\ReportOptions became final

  • [BC] Class Psalm\Report\PylintReport became final

  • [BC] Class Psalm\Report\JunitReport became final

  • [BC] Class Psalm\Report\CompactReport became final

  • [BC] Class Psalm\Report\GithubActionsReport became final

  • [BC] Class Psalm\Report\TextReport became final

  • [BC] Class Psalm\Report\SarifReport became final

  • [BC] Class Psalm\Report\PhpStormReport became final

  • [BC] Class Psalm\Plugin\Shepherd became final

  • [BC] Class Psalm\IssueBuffer became final

  • [BC] Class Psalm\SourceControl\Git\RemoteInfo became final

  • [BC] Class Psalm\SourceControl\Git\CommitInfo became final

  • [BC] Class Psalm\SourceControl\Git\GitInfo became final

  • [BC] Class Psalm\ErrorBaseline became final

  • [BC] Psalm\Config#__construct() was marked @internal

  • [BC] Class Psalm\DocComment became final

  • All non-abstract issues are now final:

    • [BC] Class Psalm\Issue\InaccessibleProperty became final
    • [BC] Class Psalm\Issue\TaintedShell became final
    • [BC] Class Psalm\Issue\PossiblyInvalidIterator became final
    • [BC] Class Psalm\Issue\MethodSignatureMustOmitReturnType became final
    • [BC] Class Psalm\Issue\TaintedHtml became final
    • [BC] Class Psalm\Issue\DuplicateConstant became final
    • [BC] Class Psalm\Issue\MissingConstructor became final
    • [BC] Class Psalm\Issue\PossiblyFalseIterator became final
    • [BC] Class Psalm\Issue\PossiblyUndefinedArrayOffset became final
    • [BC] Class Psalm\Issue\FalseOperand became final
    • [BC] Class Psalm\Issue\MixedArrayAssignment became final
    • [BC] Class Psalm\Issue\MixedArrayAccess became final
    • [BC] Class Psalm\Issue\TaintedUnserialize became final
    • [BC] Class Psalm\Issue\NullFunctionCall became final
    • [BC] Class Psalm\Issue\UnusedConstructor became final
    • [BC] Class Psalm\Issue\InvalidEnumCaseValue became final
    • [BC] Class Psalm\Issue\MissingClosureReturnType became final
    • [BC] Class Psalm\Issue\LessSpecificClassConstantType became final
    • [BC] Class Psalm\Issue\MixedPropertyFetch became final
    • [BC] Class Psalm\Issue\PossiblyNullArrayAccess became final
    • [BC] Class Psalm\Issue\MissingPropertyType became final
    • [BC] Class Psalm\Issue\TaintedCallable became final
    • [BC] Class Psalm\Issue\PossiblyInvalidMethodCall became final
    • [BC] Class Psalm\Issue\TaintedHeader became final
    • [BC] Class Psalm\Issue\PossiblyInvalidArrayAssignment became final
    • [BC] Class Psalm\Issue\PossiblyInvalidCast became final
    • [BC] Class Psalm\Issue\ImpurePropertyAssignment became final
    • [BC] Class Psalm\Issue\MixedPropertyTypeCoercion became final
    • [BC] Class Psalm\Issue\UnresolvableConstant became final
    • [BC] Class Psalm\Issue\LoopInvalidation became final
    • [BC] Class Psalm\Issue\TooManyTemplateParams became final
    • [BC] Class Psalm\Issue\InvalidCatch became final
    • [BC] Class Psalm\Issue\MismatchingDocblockReturnType became final
    • [BC] Class Psalm\Issue\PossiblyUndefinedIntArrayOffset became final
    • [BC] Class Psalm\Issue\NullArrayAccess became final
    • [BC] Class Psalm\Issue\NoEnumProperties became final
    • [BC] Class Psalm\Issue\ImpureByReferenceAssignment became final
    • [BC] Class Psalm\Issue\RedundantConditionGivenDocblockType became final
    • [BC] Class Psalm\Issue\MixedReturnTypeCoercion became final
    • [BC] Class Psalm\Issue\PossiblyNullOperand became final
    • [BC] Class Psalm\Issue\InvalidGlobal became final
    • [BC] Class Psalm\Issue\PossiblyNullArgument became final
    • [BC] Class Psalm\Issue\ForbiddenCode became final
    • [BC] Class Psalm\Issue\RedundantCast became final
    • [BC] Class Psalm\Issue\UnusedParam became final
    • [BC] Class Psalm\Issue\DuplicateArrayKey became final
    • [BC] Class Psalm\Issue\MissingImmutableAnnotation became final
    • [BC] Class Psalm\Issue\MutableDependency became final
    • [BC] Class Psalm\Issue\MixedPropertyAssignment became final
    • [BC] Class Psalm\Issue\DeprecatedTrait became final
    • [BC] Class Psalm\Issue\InvalidArrayAccess became final
    • [BC] Class Psalm\Issue\LessSpecificReturnStatement became final
    • [BC] Class Psalm\Issue\AssignmentToVoid became final
    • [BC] Class Psalm\Issue\InvalidPropertyAssignment became final
    • [BC] Class Psalm\Issue\InvalidFalsableReturnType became final
    • [BC] Class Psalm\Issue\IfThisIsMismatch became final
    • [BC] Class Psalm\Issue\UndefinedPropertyFetch became final
    • [BC] Class Psalm\Issue\UndefinedMagicPropertyFetch became final
    • [BC] Class Psalm\Issue\PossiblyUnusedReturnValue became final
    • [BC] Class Psalm\Issue\PossiblyNullPropertyFetch became final
    • [BC] Class Psalm\Issue\PossiblyInvalidPropertyFetch became final
    • [BC] Class Psalm\Issue\MixedClone became final
    • [BC] Class Psalm\Issue\DuplicateFunction became final
    • [BC] Class Psalm\Issue\InaccessibleClassConstant became final
    • [BC] Class Psalm\Issue\UndefinedGlobalVariable became final
    • [BC] Class Psalm\Issue\ImplicitToStringCast became final
    • [BC] Class Psalm\Issue\PossiblyInvalidDocblockTag became final
    • [BC] Class Psalm\Issue\ReservedWord became final
    • [BC] Class Psalm\Issue\InvalidOperand became final
    • [BC] Class Psalm\Issue\UnusedProperty became final
    • [BC] Class Psalm\Issue\UnevaluatedCode became final
    • [BC] Class Psalm\Issue\NullPropertyFetch became final
    • [BC] Class Psalm\Issue\ParamNameMismatch became final
    • [BC] Class Psalm\Issue\CircularReference became final
    • [BC] Class Psalm\Issue\UndefinedThisPropertyFetch became final
    • [BC] Class Psalm\Issue\NonStaticSelfCall became final
    • [BC] Class Psalm\Issue\NullOperand became final
    • [BC] Class Psalm\Issue\MixedAssignment became final
    • [BC] Class Psalm\Issue\MixedFunctionCall became final
    • [BC] Class Psalm\Issue\InvalidTypeImport became final
    • [BC] Class Psalm\Issue\PossiblyNullArrayOffset became final
    • [BC] Class Psalm\Issue\PossiblyInvalidArrayOffset became final
    • [BC] Class Psalm\Issue\PossiblyInvalidArgument became final
    • [BC] Class Psalm\Issue\UndefinedPropertyAssignment became final
    • [BC] Class Psalm\Issue\UnusedReturnValue became final
    • [BC] Class Psalm\Issue\ImpureFunctionCall became final
    • [BC] Class Psalm\Issue\RedundantFunctionCallGivenDocblockType became final
    • [BC] Class Psalm\Issue\PossiblyInvalidPropertyAssignmentValue became final
    • [BC] Class Psalm\Issue\PossiblyInvalidOperand became final
    • [BC] Class Psalm\Issue\ArgumentTypeCoercion became final
    • [BC] Class Psalm\Issue\OverriddenPropertyAccess became final
    • [BC] Class Psalm\Issue\PossiblyInvalidArrayAccess became final
    • [BC] Class Psalm\Issue\UnusedForeachValue became final
    • [BC] Class Psalm\Issue\ImplementedParamTypeMismatch became final
    • [BC] Class Psalm\Issue\InvalidConstantAssignmentValue became final
    • [BC] Class Psalm\Issue\PossiblyUndefinedMethod became final
    • [BC] Class Psalm\Issue\DuplicateEnumCaseValue became final
    • [BC] Class Psalm\Issue\RawObjectIteration became final
    • [BC] Class Psalm\Issue\UndefinedVariable became final
    • [BC] Class Psalm\Issue\MissingDocblockType became final
    • [BC] Class Psalm\Issue\NullArrayOffset became final
    • [BC] Class Psalm\Issue\PropertyNotSetInConstructor became final
    • [BC] Class Psalm\Issue\PossiblyInvalidPropertyAssignment became final
    • [BC] Class Psalm\Issue\PossiblyNullPropertyAssignmentValue became final
    • [BC] Class Psalm\Issue\UnsafeInstantiation became final
    • [BC] Class Psalm\Issue\UnimplementedAbstractMethod became final
    • [BC] Class Psalm\Issue\UnusedClosureParam became final
    • [BC] Class Psalm\Issue\PossiblyNullFunctionCall became final
    • [BC] Class Psalm\Issue\UndefinedAttributeClass became final
    • [BC] Class Psalm\Issue\NullableReturnStatement became final
    • [BC] Class Psalm\Issue\DuplicateMethod became final
    • [BC] Class Psalm\Issue\TooFewArguments became final
    • [BC] Class Psalm\Issue\UndefinedConstant became final
    • [BC] Class Psalm\Issue\NullReference became final
    • [BC] Class Psalm\Issue\ImplementedReturnTypeMismatch became final
    • [BC] Class Psalm\Issue\InvalidEnumBackingType became final
    • [BC] Class Psalm\Issue\InvalidNullableReturnType became final
    • [BC] Class Psalm\Issue\ImpureVariable became final
    • [BC] Class Psalm\Issue\TypeDoesNotContainNull became final
    • [BC] Class Psalm\Issue\ConstructorSignatureMismatch became final
    • [BC] Class Psalm\Issue\ImpurePropertyFetch became final
    • [BC] Class Psalm\Issue\RedundantCastGivenDocblockType became final
    • [BC] Class Psalm\Issue\PropertyTypeCoercion became final
    • [BC] Class Psalm\Issue\InvalidDocblockParamName became final
    • [BC] Class Psalm\Issue\UnsafeGenericInstantiation became final
    • [BC] Class Psalm\Issue\MissingClosureParamType became final
    • [BC] Class Psalm\Issue\TraitMethodSignatureMismatch became final
    • [BC] Class Psalm\Issue\ImpureStaticProperty became final
    • [BC] Class Psalm\Issue\InvalidThrow became final
    • [BC] Class Psalm\Issue\ParentNotFound became final
    • [BC] Class Psalm\Issue\ImpureStaticVariable became final
    • [BC] Class Psalm\Issue\PossiblyFalseReference became final
    • [BC] Class Psalm\Issue\ComplexMethod became final
    • [BC] Class Psalm\Issue\PossiblyNullArrayAssignment became final
    • [BC] Class Psalm\Issue\AbstractInstantiation became final
    • [BC] Class Psalm\Issue\UncaughtThrowInGlobalScope became final
    • [BC] Class Psalm\Issue\MismatchingDocblockPropertyType became final
    • [BC] Class Psalm\Issue\UnresolvableInclude became final
    • [BC] Class Psalm\Issue\DocblockTypeContradiction became final
    • [BC] Class Psalm\Issue\TaintedEval became final
    • [BC] Class Psalm\Issue\UnusedVariable became final
    • [BC] Class Psalm\Issue\DeprecatedConstant became final
    • [BC] Class Psalm\Issue\TaintedSystemSecret became final
    • [BC] Class Psalm\Issue\EmptyArrayAccess became final
    • [BC] Class Psalm\Issue\UndefinedInterface became final
    • [BC] Class Psalm\Issue\MixedInferredReturnType became final
    • [BC] Class Psalm\Issue\TaintedCookie became final
    • [BC] Class Psalm\Issue\UndefinedMagicPropertyAssignment became final
    • [BC] Class Psalm\Issue\NamedArgumentNotAllowed became final
    • [BC] Class Psalm\Issue\MethodSignatureMustProvideReturnType became final
    • [BC] Class Psalm\Issue\MissingParamType became final
    • [BC] Class Psalm\Issue\InvalidArrayAssignment became final
    • [BC] Class Psalm\Issue\UnimplementedInterfaceMethod became final
    • [BC] Class Psalm\Issue\InvalidPassByReference became final
    • [BC] Class Psalm\Issue\MissingDependency became final
    • [BC] Class Psalm\Issue\ReferenceConstraintViolation became final
    • [BC] Class Psalm\Issue\TaintedLdap became final
    • [BC] Class Psalm\Issue\PossiblyNullIterator became final
    • [BC] Class Psalm\Issue\InvalidScalarArgument became final
    • [BC] Class Psalm\Issue\DeprecatedMethod became final
    • [BC] Class Psalm\Issue\NullPropertyAssignment became final
    • [BC] Class Psalm\Issue\InvalidExtendClass became final
    • [BC] Class Psalm\Issue\DeprecatedClass became final
    • [BC] Class Psalm\Issue\ReferenceReusedFromConfusingScope became final
    • [BC] Class Psalm\Issue\UndefinedFunction became final
    • [BC] Class Psalm\Issue\LessSpecificImplementedReturnType became final
    • [BC] Class Psalm\Issue\NullIterator became final
    • [BC] Class Psalm\Issue\TaintedInclude became final
    • [BC] Class Psalm\Issue\UnusedMethodCall became final
    • [BC] Class Psalm\Issue\InvalidIterator became final
    • [BC] Class Psalm\Issue\PsalmInternalError became final
    • [BC] Class Psalm\Issue\InvalidParent became final
    • [BC] Class Psalm\Issue\AmbiguousConstantInheritance became final
    • [BC] Class Psalm\Issue\InvalidLiteralArgument became final
    • [BC] Class Psalm\Issue\MixedReturnStatement became final
    • [BC] Class Psalm\Issue\AbstractMethodCall became final
    • [BC] Class Psalm\Issue\InvalidClone became final
    • [BC] Class Psalm\Issue\DuplicateEnumCase became final
    • [BC] Class Psalm\Issue\InvalidDocblock became final
    • [BC] Class Psalm\Issue\RedundantIdentityWithTrue became final
    • [BC] Class Psalm\Issue\MissingReturnType became final
    • [BC] Class Psalm\Issue\RedundantCondition became final
    • [BC] Class Psalm\Issue\UnnecessaryVarAnnotation became final
    • [BC] Class Psalm\Issue\ConfigIssue became final
    • [BC] Class Psalm\Issue\InternalClass became final
    • [BC] Class Psalm\Issue\UndefinedDocblockClass became final
    • [BC] Class Psalm\Issue\DuplicateParam became final
    • [BC] Class Psalm\Issue\MismatchingDocblockParamType became final
    • [BC] Class Psalm\Issue\LessSpecificReturnType became final
    • [BC] Class Psalm\Issue\PossiblyUnusedProperty became final
    • [BC] Class Psalm\Issue\PossiblyNullReference became final
    • [BC] Class Psalm\Issue\MissingFile became final
    • [BC] Class Psalm\Issue\InvalidArgument became final
    • [BC] Class Psalm\Issue\PossiblyUndefinedGlobalVariable became final
    • [BC] Class Psalm\Issue\UndefinedThisPropertyAssignment became final
    • [BC] Class Psalm\Issue\ConflictingReferenceConstraint became final
    • [BC] Class Psalm\Issue\InvalidCast became final
    • [BC] Class Psalm\Issue\MoreSpecificReturnType became final
    • [BC] Class Psalm\Issue\ImpureMethodCall became final
    • [BC] Class Psalm\Issue\UnrecognizedExpression became final
    • [BC] Class Psalm\Issue\NoValue became final
    • [BC] Class Psalm\Issue\DeprecatedInterface became final
    • [BC] Class Psalm\Issue\InvalidStringClass became final
    • [BC] Class Psalm\Issue\MixedMethodCall became final
    • [BC] Class Psalm\Issue\UndefinedMagicMethod became final
    • [BC] Class Psalm\Issue\MissingThrowsDocblock became final
    • [BC] Class Psalm\Issue\TaintedTextWithQuotes became final
    • [BC] Class Psalm\Issue\InvalidReturnStatement became final
    • [BC] Class Psalm\Issue\DeprecatedFunction became final
    • [BC] Class Psalm\Issue\InterfaceInstantiation became final
    • [BC] Class Psalm\Issue\TooManyArguments became final
    • [BC] Class Psalm\Issue\PossibleRawObjectIteration became final
    • [BC] Class Psalm\Issue\PossiblyFalsePropertyAssignmentValue became final
    • [BC] Class Psalm\Issue\FalsableReturnStatement became final
    • [BC] Class Psalm\Issue\RedundantFunctionCall became final
    • [BC] Class Psalm\Issue\ImplementationRequirementViolation became final
    • [BC] Class Psalm\Issue\InternalMethod became final
    • [BC] Class Psalm\Issue\PossiblyInvalidFunctionCall became final
    • [BC] Class Psalm\Issue\OverriddenMethodAccess became final
    • [BC] Class Psalm\Issue\MixedArgumentTypeCoercion became final
    • [BC] Class Psalm\Issue\InvalidAttribute became final
    • [BC] Class Psalm\Issue\UndefinedInterfaceMethod became final
    • [BC] Class Psalm\Issue\InvalidPropertyFetch became final
    • [BC] Class Psalm\Issue\PossiblyUnusedMethod became final
    • [BC] Class Psalm\Issue\UndefinedTrace became final
    • [BC] Class Psalm\Issue\NullArgument became final
    • [BC] Class Psalm\Issue\UndefinedMethod became final
    • [BC] Class Psalm\Issue\TaintedUserSecret became final
    • [BC] Class Psalm\Issue\UndefinedTrait became final
    • [BC] Class Psalm\Issue\UnusedClass became final
    • [BC] Class Psalm\Issue\StringIncrement became final
    • [BC] Class Psalm\Issue\InaccessibleMethod became final
    • [BC] Class Psalm\Issue\PossiblyUnusedParam became final
    • [BC] Class Psalm\Issue\Trace became final
    • [BC] Class Psalm\Issue\UnhandledMatchCondition became final
    • [BC] Class Psalm\Issue\DuplicateClass became final
    • [BC] Class Psalm\Issue\InvalidClass became final
    • [BC] Class Psalm\Issue\TypeDoesNotContainType became final
    • [BC] Class Psalm\Issue\InvalidScope became final
    • [BC] Class Psalm\Issue\TaintedCustom became final
    • [BC] Class Psalm\Issue\TaintedSSRF became final
    • [BC] Class Psalm\Issue\InvalidNamedArgument became final
    • [BC] Class Psalm\Issue\InvalidPropertyAssignmentValue became final
    • [BC] Class Psalm\Issue\ContinueOutsideLoop became final
    • [BC] Class Psalm\Issue\MixedArgument became final
    • [BC] Class Psalm\Issue\TaintedSql became final
    • [BC] Class Psalm\Issue\UnusedFunctionCall became final
    • [BC] Class Psalm\Issue\InternalProperty became final
    • [BC] Class Psalm\Issue\InvalidParamDefault became final
    • [BC] Class Psalm\Issue\RedundantPropertyInitializationCheck became final
    • [BC] Class Psalm\Issue\InvalidTraversableImplementation became final
    • [BC] Class Psalm\Issue\InvalidTemplateParam became final
    • [BC] Class Psalm\Issue\InvalidStaticInvocation became final
    • [BC] Class Psalm\Issue\MixedArrayOffset became final
    • [BC] Class Psalm\Issue\PossiblyInvalidClone became final
    • [BC] Class Psalm\Issue\InvalidFunctionCall became final
    • [BC] Class Psalm\Issue\InvalidMethodCall became final
    • [BC] Class Psalm\Issue\ComplexFunction became final
    • [BC] Class Psalm\Issue\UnusedPsalmSuppress became final
    • [BC] Class Psalm\Issue\MixedStringOffsetAssignment became final
    • [BC] Class Psalm\Issue\UnrecognizedStatement became final
    • [BC] Class Psalm\Issue\TaintedFile became final
    • [BC] Class Psalm\Issue\UnusedMethod became final
    • [BC] Class Psalm\Issue\PossiblyFalseArgument became final
    • [BC] Class Psalm\Issue\DeprecatedProperty became final
    • [BC] Class Psalm\Issue\PossiblyUndefinedVariable became final
    • [BC] Class Psalm\Issue\PossiblyNullPropertyAssignment became final
    • [BC] Class Psalm\Issue\MixedOperand became final
    • [BC] Class Psalm\Issue\NoInterfaceProperties became final
    • [BC] Class Psalm\Issue\InvalidReturnType became final
    • [BC] Class Psalm\Issue\MixedArrayTypeCoercion became final
    • [BC] Class Psalm\Issue\ParadoxicalCondition became final
    • [BC] Class Psalm\Issue\InvalidToString became final
    • [BC] Class Psalm\Issue\MethodSignatureMismatch became final
    • [BC] Class Psalm\Issue\PossiblyFalseOperand became final
    • [BC] Class Psalm\Issue\UndefinedClass became final
    • [BC] Class Psalm\Issue\OverriddenInterfaceConstant became final
    • [BC] Class Psalm\Issue\MissingTemplateParam became final
    • [BC] Class Psalm\Issue\InvalidArrayOffset became final
    • [BC] Class Psalm\Issue\MoreSpecificImplementedParamType became final
    • [BC] Class Psalm\Issue\UninitializedProperty became final
    • [BC] Class Psalm\Issue\ParseError became final
    • [BC] Class Psalm\Issue\PossiblyUndefinedStringArrayOffset became final
    • [BC] Class Psalm\Issue\ExtensionRequirementViolation became final

  • Storage classes became final:

    • [BC] Class Psalm\Storage\MethodStorage became final
    • [BC] Class Psalm\Storage\AttributeStorage became final
    • [BC] Class Psalm\Storage\FileStorage became final
    • [BC] Class Psalm\Storage\PropertyStorage became final
    • [BC] Class Psalm\Storage\FunctionStorage became final
    • [BC] Class Psalm\Storage\Assertion\HasArrayKey became final
    • [BC] Class Psalm\Storage\Assertion\Truthy became final
    • [BC] Class Psalm\Storage\Assertion\IsAClass became final
    • [BC] Class Psalm\Storage\Assertion\HasAtLeastCount became final
    • [BC] Class Psalm\Storage\Assertion\HasMethod became final
    • [BC] Class Psalm\Storage\Assertion\HasIntOrStringArrayAccess became final
    • [BC] Class Psalm\Storage\Assertion\DoesNotHaveMethod became final
    • [BC] Class Psalm\Storage\Assertion\IsLessThanOrEqualTo became final
    • [BC] Class Psalm\Storage\Assertion\IsNotAClass became final
    • [BC] Class Psalm\Storage\Assertion\ArrayKeyDoesNotExist became final
    • [BC] Class Psalm\Storage\Assertion\IsNotIdentical became final
    • [BC] Class Psalm\Storage\Assertion\IsClassEqual became final
    • [BC] Class Psalm\Storage\Assertion\NotNonEmptyCountable became final
    • [BC] Class Psalm\Storage\Assertion\Any became final
    • [BC] Class Psalm\Storage\Assertion\IsLooselyEqual became final
    • [BC] Class Psalm\Storage\Assertion\NonEmpty became final
    • [BC] Class Psalm\Storage\Assertion\IsGreaterThanOrEqualTo became final
    • [BC] Class Psalm\Storage\Assertion\HasStringArrayAccess became final
    • [BC] Class Psalm\Storage\Assertion\IsClassNotEqual became final
    • [BC] Class Psalm\Storage\Assertion\HasExactCount became final
    • [BC] Class Psalm\Storage\Assertion\IsNotCountable became final
    • [BC] Class Psalm\Storage\Assertion\IsIdentical became final
    • [BC] Class Psalm\Storage\Assertion\IsType became final
    • [BC] Class Psalm\Storage\Assertion\NotNestedAssertions became final
    • [BC] Class Psalm\Storage\Assertion\IsGreaterThan became final
    • [BC] Class Psalm\Storage\Assertion\IsIsset became final
    • [BC] Class Psalm\Storage\Assertion\Empty_ became final
    • [BC] Class Psalm\Storage\Assertion\IsNotType became final
    • [BC] Class Psalm\Storage\Assertion\ArrayKeyExists became final
    • [BC] Class Psalm\Storage\Assertion\DoesNotHaveAtLeastCount became final
    • [BC] Class Psalm\Storage\Assertion\IsNotIsset became final
    • [BC] Class Psalm\Storage\Assertion\NonEmptyCountable became final
    • [BC] Class Psalm\Storage\Assertion\NestedAssertions became final
    • [BC] Class Psalm\Storage\Assertion\Falsy became final
    • [BC] Class Psalm\Storage\Assertion\IsNotLooselyEqual became final
    • [BC] Class Psalm\Storage\Assertion\IsEqualIsset became final
    • [BC] Class Psalm\Storage\Assertion\IsLessThan became final
    • [BC] Class Psalm\Storage\Assertion\DoesNotHaveExactCount became final
    • [BC] Class Psalm\Storage\Assertion\IsCountable became final
    • [BC] Class Psalm\Storage\Assertion\NotInArray became final
    • [BC] Class Psalm\Storage\Assertion\InArray became final
    • [BC] Class Psalm\Storage\FunctionLikeParameter became final
    • [BC] Class Psalm\Storage\Possibilities became final
    • [BC] Class Psalm\Storage\ClassConstantStorage became final
    • [BC] Class Psalm\Storage\ClassLikeStorage became final
    • [BC] Class Psalm\Storage\AttributeArg became final
    • [BC] Class Psalm\Storage\EnumCaseStorage became final

  • VirtualNode classes became final

    • [BC] Class Psalm\Node\Stmt\VirtualFunction became final
    • [BC] Class Psalm\Node\Stmt\VirtualClassConst became final
    • [BC] Class Psalm\Node\Stmt\VirtualTraitUse became final
    • [BC] Class Psalm\Node\Stmt\VirtualElseIf became final
    • [BC] Class Psalm\Node\Stmt\VirtualDeclare became final
    • [BC] Class Psalm\Node\Stmt\VirtualHaltCompiler became final
    • [BC] Class Psalm\Node\Stmt\VirtualThrow became final
    • [BC] Class Psalm\Node\Stmt\TraitUseAdaptation\VirtualAlias became final
    • [BC] Class Psalm\Node\Stmt\TraitUseAdaptation\VirtualPrecedence became final
    • [BC] Class Psalm\Node\Stmt\VirtualNamespace became final
    • [BC] Class Psalm\Node\Stmt\VirtualIf became final
    • [BC] Class Psalm\Node\Stmt\VirtualStatic became final
    • [BC] Class Psalm\Node\Stmt\VirtualInlineHTML became final
    • [BC] Class Psalm\Node\Stmt\VirtualUseUse became final
    • [BC] Class Psalm\Node\Stmt\VirtualCatch became final
    • [BC] Class Psalm\Node\Stmt\VirtualDeclareDeclare became final
    • [BC] Class Psalm\Node\Stmt\VirtualEcho became final
    • [BC] Class Psalm\Node\Stmt\VirtualFinally became final
    • [BC] Class Psalm\Node\Stmt\VirtualInterface became final
    • [BC] Class Psalm\Node\Stmt\VirtualGlobal became final
    • [BC] Class Psalm\Node\Stmt\VirtualGroupUse became final
    • [BC] Class Psalm\Node\Stmt\VirtualLabel became final
    • [BC] Class Psalm\Node\Stmt\VirtualTrait became final
    • [BC] Class Psalm\Node\Stmt\VirtualClass became final
    • [BC] Class Psalm\Node\Stmt\VirtualUse became final
    • [BC] Class Psalm\Node\Stmt\VirtualProperty became final
    • [BC] Class Psalm\Node\Stmt\VirtualUnset became final
    • [BC] Class Psalm\Node\Stmt\VirtualPropertyProperty became final
    • [BC] Class Psalm\Node\Stmt\VirtualExpression became final
    • [BC] Class Psalm\Node\Stmt\VirtualSwitch became final
    • [BC] Class Psalm\Node\Stmt\VirtualStaticVar became final
    • [BC] Class Psalm\Node\Stmt\VirtualClassMethod became final
    • [BC] Class Psalm\Node\Stmt\VirtualNop became final
    • [BC] Class Psalm\Node\Stmt\VirtualReturn became final
    • [BC] Class Psalm\Node\Stmt\VirtualDo became final
    • [BC] Class Psalm\Node\Stmt\VirtualBreak became final
    • [BC] Class Psalm\Node\Stmt\VirtualElse became final
    • [BC] Class Psalm\Node\Stmt\VirtualContinue became final
    • [BC] Class Psalm\Node\Stmt\VirtualForeach became final
    • [BC] Class Psalm\Node\Stmt\VirtualGoto became final
    • [BC] Class Psalm\Node\Stmt\VirtualWhile became final
    • [BC] Class Psalm\Node\Stmt\VirtualFor became final
    • [BC] Class Psalm\Node\Stmt\VirtualCase became final
    • [BC] Class Psalm\Node\Stmt\VirtualTryCatch became final
    • [BC] Class Psalm\Node\Stmt\VirtualConst became final
    • [BC] Class Psalm\Node\VirtualAttribute became final
    • [BC] Class Psalm\Node\VirtualArg became final
    • [BC] Class Psalm\Node\Expr\VirtualUnaryPlus became final
    • [BC] Class Psalm\Node\Expr\VirtualMatch became final
    • [BC] Class Psalm\Node\Expr\VirtualNullsafeMethodCall became final
    • [BC] Class Psalm\Node\Expr\VirtualTernary became final
    • [BC] Class Psalm\Node\Expr\VirtualThrow became final
    • [BC] Class Psalm\Node\Expr\VirtualNew became final
    • [BC] Class Psalm\Node\Expr\VirtualEmpty became final
    • [BC] Class Psalm\Node\Expr\VirtualStaticPropertyFetch became final
    • [BC] Class Psalm\Node\Expr\VirtualUnaryMinus became final
    • [BC] Class Psalm\Node\Expr\VirtualStaticCall became final
    • [BC] Class Psalm\Node\Expr\VirtualPostInc became final
    • [BC] Class Psalm\Node\Expr\VirtualPreDec became final
    • [BC] Class Psalm\Node\Expr\VirtualAssign became final
    • [BC] Class Psalm\Node\Expr\VirtualErrorSuppress became final
    • [BC] Class Psalm\Node\Expr\VirtualPreInc became final
    • [BC] Class Psalm\Node\Expr\VirtualArray became final
    • [BC] Class Psalm\Node\Expr\VirtualArrayItem became final
    • [BC] Class Psalm\Node\Expr\VirtualIsset became final
    • [BC] Class Psalm\Node\Expr\VirtualClone became final
    • [BC] Class Psalm\Node\Expr\VirtualConstFetch became final
    • [BC] Class Psalm\Node\Expr\VirtualEval became final
    • [BC] Class Psalm\Node\Expr\VirtualPrint became final
    • [BC] Class Psalm\Node\Expr\VirtualError became final
    • [BC] Class Psalm\Node\Expr\VirtualClosure became final
    • [BC] Class Psalm\Node\Expr\VirtualNullsafePropertyFetch became final
    • [BC] Class Psalm\Node\Expr\VirtualArrowFunction became final
    • [BC] Class Psalm\Node\Expr\VirtualBooleanNot became final
    • [BC] Class Psalm\Node\Expr\VirtualPropertyFetch became final
    • [BC] Class Psalm\Node\Expr\Cast\VirtualArray became final
    • [BC] Class Psalm\Node\Expr\Cast\VirtualInt became final
    • [BC] Class Psalm\Node\Expr\Cast\VirtualObject became final
    • [BC] Class Psalm\Node\Expr\Cast\VirtualDouble became final
    • [BC] Class Psalm\Node\Expr\Cast\VirtualUnset became final
    • [BC] Class Psalm\Node\Expr\Cast\VirtualBool became final
    • [BC] Class Psalm\Node\Expr\Cast\VirtualString became final
    • [BC] Class Psalm\Node\Expr\VirtualMethodCall became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualBitwiseAnd became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualCoalesce became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualDiv became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualNotIdentical became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualLogicalAnd became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualSpaceship became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualGreater became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualShiftRight became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualIdentical became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualMul became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualLogicalOr became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualBitwiseXor became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualSmallerOrEqual became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualNotEqual became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualGreaterOrEqual became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualMinus became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualEqual became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualSmaller became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualLogicalXor became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualMod became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualBooleanAnd became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualPlus became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualShiftLeft became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualBooleanOr became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualBitwiseOr became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualConcat became final
    • [BC] Class Psalm\Node\Expr\BinaryOp\VirtualPow became final
    • [BC] Class Psalm\Node\Expr\VirtualVariable became final
    • [BC] Class Psalm\Node\Expr\VirtualBitwiseNot became final
    • [BC] Class Psalm\Node\Expr\VirtualShellExec became final
    • [BC] Class Psalm\Node\Expr\VirtualFuncCall became final
    • [BC] Class Psalm\Node\Expr\VirtualInclude became final
    • [BC] Class Psalm\Node\Expr\VirtualAssignRef became final
    • [BC] Class Psalm\Node\Expr\VirtualClassConstFetch became final
    • [BC] Class Psalm\Node\Expr\VirtualExit became final
    • [BC] Class Psalm\Node\Expr\VirtualArrayDimFetch became final
    • [BC] Class Psalm\Node\Expr\VirtualList became final
    • [BC] Class Psalm\Node\Expr\VirtualYield became final
    • [BC] Class Psalm\Node\Expr\VirtualYieldFrom became final
    • [BC] Class Psalm\Node\Expr\VirtualClosureUse became final
    • [BC] Class Psalm\Node\Expr\VirtualPostDec became final
    • [BC] Class Psalm\Node\Expr\AssignOp\VirtualBitwiseAnd became final
    • [BC] Class Psalm\Node\Expr\AssignOp\VirtualCoalesce became final
    • [BC] Class Psalm\Node\Expr\AssignOp\VirtualDiv became final
    • [BC] Class Psalm\Node\Expr\AssignOp\VirtualShiftRight became final
    • [BC] Class Psalm\Node\Expr\AssignOp\VirtualMul became final
    • [BC] Class Psalm\Node\Expr\AssignOp\VirtualBitwiseXor became final
    • [BC] Class Psalm\Node\Expr\AssignOp\VirtualMinus became final
    • [BC] Class Psalm\Node\Expr\AssignOp\VirtualMod became final
    • [BC] Class Psalm\Node\Expr\AssignOp\VirtualPlus became final
    • [BC] Class Psalm\Node\Expr\AssignOp\VirtualShiftLeft became final
    • [BC] Class Psalm\Node\Expr\AssignOp\VirtualBitwiseOr became final
    • [BC] Class Psalm\Node\Expr\AssignOp\VirtualConcat became final
    • [BC] Class Psalm\Node\Expr\AssignOp\VirtualPow became final
    • [BC] Class Psalm\Node\Expr\VirtualInstanceof became final
    • [BC] Class Psalm\Node\VirtualNullableType became final
    • [BC] Class Psalm\Node\VirtualMatchArm became final
    • [BC] Class Psalm\Node\VirtualIdentifier became final
    • [BC] Class Psalm\Node\VirtualName became final
    • [BC] Class Psalm\Node\VirtualParam became final
    • [BC] Class Psalm\Node\VirtualAttributeGroup became final
    • [BC] Class Psalm\Node\VirtualVarLikeIdentifier became final
    • [BC] Class Psalm\Node\Name\VirtualRelative became final
    • [BC] Class Psalm\Node\Name\VirtualFullyQualified became final
    • [BC] Class Psalm\Node\VirtualUnionType became final
    • [BC] Class Psalm\Node\Scalar\VirtualLNumber became final
    • [BC] Class Psalm\Node\Scalar\VirtualDNumber became final
    • [BC] Class Psalm\Node\Scalar\MagicConst\VirtualFunction became final
    • [BC] Class Psalm\Node\Scalar\MagicConst\VirtualNamespace became final
    • [BC] Class Psalm\Node\Scalar\MagicConst\VirtualMethod became final
    • [BC] Class Psalm\Node\Scalar\MagicConst\VirtualLine became final
    • [BC] Class Psalm\Node\Scalar\MagicConst\VirtualTrait became final
    • [BC] Class Psalm\Node\Scalar\MagicConst\VirtualClass became final
    • [BC] Class Psalm\Node\Scalar\MagicConst\VirtualDir became final
    • [BC] Class Psalm\Node\Scalar\MagicConst\VirtualFile became final
    • [BC] Class Psalm\Node\Scalar\VirtualEncapsedStringPart became final
    • [BC] Class Psalm\Node\Scalar\VirtualString became final
    • [BC] Class Psalm\Node\Scalar\VirtualEncapsed became final
    • [BC] Class Psalm\Node\VirtualConst became final

  • Type nodes became final

    • [BC] Class Psalm\Type\TaintKindGroup became final
    • [BC] Class Psalm\Type\Atomic\TNumericString became final
    • [BC] Class Psalm\Type\Atomic\TClassStringMap became final
    • [BC] Class Psalm\Type\Atomic\TEmptyNumeric became final
    • [BC] Class Psalm\Type\Atomic\TCallableObject became final
    • [BC] Class Psalm\Type\Atomic\TSingleLetter became final
    • [BC] Class Psalm\Type\Atomic\TClosedResource became final
    • [BC] Class Psalm\Type\Atomic\TIntMaskOf became final
    • [BC] Class Psalm\Type\Atomic\TNonEmptyScalar became final
    • [BC] Class Psalm\Type\Atomic\TLowercaseString became final
    • [BC] Class Psalm\Type\Atomic\TCallable became final
    • [BC] Class Psalm\Type\Atomic\TFalse became final
    • [BC] Class Psalm\Type\Atomic\TIterable became final
    • [BC] Class Psalm\Type\Atomic\TTraitString became final
    • [BC] Class Psalm\Type\Atomic\TNonEmptyNonspecificLiteralString became final
    • [BC] Class Psalm\Type\Atomic\TLiteralInt became final
    • [BC] Class Psalm\Type\Atomic\TTrue became final
    • [BC] Class Psalm\Type\Atomic\TDependentGetClass became final
    • [BC] Class Psalm\Type\Atomic\TValueOf became final
    • [BC] Class Psalm\Type\Atomic\TGenericObject became final
    • [BC] Class Psalm\Type\Atomic\TNonEmptyLowercaseString became final
    • [BC] Class Psalm\Type\Atomic\TEnumCase became final
    • [BC] Class Psalm\Type\Atomic\TCallableKeyedArray became final
    • [BC] Class Psalm\Type\Atomic\TDependentGetDebugType became final
    • [BC] Class Psalm\Type\Atomic\TKeyOf became final
    • [BC] Class Psalm\Type\Atomic\TNonspecificLiteralInt became final
    • [BC] Class Psalm\Type\Atomic\TObjectWithProperties became final
    • [BC] Class Psalm\Type\Atomic\TTemplateValueOf became final
    • [BC] Class Psalm\Type\Atomic\TDependentListKey became final
    • [BC] Class Psalm\Type\Atomic\TConditional became final
    • [BC] Class Psalm\Type\Atomic\TIntRange became final
    • [BC] Class Psalm\Type\Atomic\TCallableString became final
    • [BC] Class Psalm\Type\Atomic\TClosure became final
    • [BC] Class Psalm\Type\Atomic\TTypeAlias became final
    • [BC] Class Psalm\Type\Atomic\TAnonymousClassInstance became final
    • [BC] Class Psalm\Type\Atomic\TIntMask became final
    • [BC] Class Psalm\Type\Atomic\TTemplateKeyOf became final
    • [BC] Class Psalm\Type\Atomic\TDependentGetType became final
    • [BC] Class Psalm\Type\Atomic\TLiteralFloat became final
    • [BC] Class Psalm\Type\Atomic\TCallableArray became final
    • [BC] Class Psalm\Type\Atomic\TNonEmptyMixed became final
    • [BC] Class Psalm\Type\Atomic\TTemplateParamClass became final
    • [BC] Class Psalm\Type\Atomic\TTemplateIndexedAccess became final
    • [BC] Class Psalm\Type\Atomic\TEmptyScalar became final
    • [BC] Class Psalm\Type\Atomic\TNever became final
    • [BC] Class Psalm\Type\Atomic\TNull became final
    • [BC] Class Psalm\Type\Atomic\TTemplateParam became final
    • [BC] Class Psalm\Type\Atomic\TLiteralClassString became final
    • [BC] Class Psalm\Type\Atomic\TResource became final
    • [BC] Class Psalm\Type\Atomic\TVoid became final
    • [BC] Class Psalm\Type\Atomic\TCallableList became final
    • [BC] Class Psalm\Type\Atomic\TEmptyMixed became final
    • [BC] Class Psalm\Type\Atomic\TClassConstant became final
    • [BC] Class Psalm\Type\TaintKind became final
    • [BC] Class Psalm\Type\Union became final

  • [BC] Property Psalm\Config::$universal_object_crates changed default value from array{'stdClass','SimpleXMLElement','SimpleXMLIterator'} to null

Removed

  • [BC] Property Psalm\Codebase::$php_major_version was removed, use Psalm\Codebase::$analysis_php_version_id.
  • [BC] Property Psalm\Codebase::$php_minor_version was removed, use Psalm\Codebase::$analysis_php_version_id.
  • [BC] Class Psalm\Type\Atomic\TEmpty was removed
  • [BC] Method Psalm\Type\Union::isEmpty() was removed
  • [BC] Property Psalm\Config::$allow_phpstorm_generics was removed
  • [BC] Property Psalm\Config::$exit_functions was removed
  • [BC] Property Psalm\Config::$forbid_echo was removed
  • [BC] Property Psalm\Config::$load_xdebug_stub was removed
  • [BC] Method Psalm\Type::getEmpty() was removed
  • [BC] Legacy hook interfaces have been removed:
    • Psalm\Plugin\Hook\MethodReturnTypeProviderInterface
    • Psalm\Plugin\Hook\BeforeFileAnalysisInterface
    • Psalm\Plugin\Hook\AfterFileAnalysisInterface
    • Psalm\Plugin\Hook\AfterMethodCallAnalysisInterface
    • Psalm\Plugin\Hook\AfterClassLikeVisitInterface
    • Psalm\Plugin\Hook\StringInterpreterInterface
    • Psalm\Plugin\Hook\AfterExpressionAnalysisInterface
    • Psalm\Plugin\Hook\AfterEveryFunctionCallAnalysisInterface
    • Psalm\Plugin\Hook\PropertyExistenceProviderInterface
    • Psalm\Plugin\Hook\AfterFunctionLikeAnalysisInterface
    • Psalm\Plugin\Hook\FunctionParamsProviderInterface
    • Psalm\Plugin\Hook\FunctionReturnTypeProviderInterface
    • Psalm\Plugin\Hook\FunctionExistenceProviderInterface
    • Psalm\Plugin\Hook\AfterAnalysisInterface
    • Psalm\Plugin\Hook\MethodVisibilityProviderInterface
    • Psalm\Plugin\Hook\MethodParamsProviderInterface
    • Psalm\Plugin\Hook\AfterClassLikeExistenceCheckInterface
    • Psalm\Plugin\Hook\PropertyTypeProviderInterface
    • Psalm\Plugin\Hook\AfterFunctionCallAnalysisInterface
    • Psalm\Plugin\Hook\MethodExistenceProviderInterface
    • Psalm\Plugin\Hook\AfterCodebasePopulatedInterface
    • Psalm\Plugin\Hook\AfterClassLikeAnalysisInterface
    • Psalm\Plugin\Hook\PropertyVisibilityProviderInterface
    • Psalm\Plugin\Hook\AfterStatementAnalysisInterface
  • [BC] Method Psalm\Issue\CodeIssue::getLocation() was removed
  • [BC] Method Psalm\Issue\CodeIssue::getFileName() was removed
  • [BC] Method Psalm\Issue\CodeIssue::getMessage() was removed
  • [BC] Method Psalm\DocComment::parse() was removed
  • [BC] Class Psalm\Type\Atomic\THtmlEscapedString has been removed
  • [BC] Property Psalm\Context::$vars_from_global has been renamed to $referenced_globals
  • [BC] Self-registration of file type scanners and file type analyzers has been changed
    • Psalm\Plugin\RegistrationInterface::addFileTypeScanner was removed
    • Psalm\Plugin\RegistrationInterface::addFileTypeAnalyzer was removed
    • ℹ️ migration possible using Psalm\Plugin\FileExtensionsInterface
    • Psalm\PluginRegistrationSocket::addFileTypeScanner was removed
    • Psalm\PluginRegistrationSocket::getAdditionalFileTypeScanners was removed
    • Psalm\PluginRegistrationSocket::addFileTypeAnalyzer was removed
    • Psalm\PluginRegistrationSocket::getAdditionalFileTypeAnalyzers was removed
    • Psalm\PluginRegistrationSocket::getAdditionalFileExtensions was removed
    • Psalm\PluginRegistrationSocket::addFileExtension was removed
    • ℹ️ migration possible using Psalm\PluginFileExtensionsSocket
  • [BC] Method \Psalm\Plugin\EventHandler\Event\AfterFunctionLikeAnalysisEvent::getClasslikeStorage() was removed, use correct \Psalm\Plugin\EventHandler\Event\AfterFunctionLikeAnalysisEvent::getFunctionlikeStorage() instead