Error Identifier: typeAlias.invalidType

Every error reported by PHPStan has an error identifier. Here’s a list of all error identifiers. In PHPStan Pro you can see the error identifier next to each error and filter errors by their identifiers.

Code example #

<?php declare(strict_types = 1);

/**
 * @phpstan-type MyType array{name: string, value: }
 */
class Foo
{
}

Why is it reported? #

A type alias defined via @phpstan-type contains a type definition that cannot be parsed. The type syntax in the alias is malformed or uses unsupported constructs, resulting in an error type that PHPStan cannot resolve.

Common causes include:

Syntax errors in the type definition (missing parts, extra commas, unclosed brackets)
Using type syntax that PHPStan does not recognize

How to fix it #

Correct the type definition syntax in the @phpstan-type tag:

 <?php declare(strict_types = 1);
 
 /**
- * @phpstan-type MyType array{name: string, value: }
+ * @phpstan-type MyType array{name: string, value: mixed}
  */
 class Foo
 {
 }

How to ignore this error #

You can use the identifier typeAlias.invalidType to ignore this error using a comment:

// @phpstan-ignore typeAlias.invalidType
codeThatProducesTheError();

You can also use only the identifier key to ignore all errors of the same type in your configuration file in the ignoreErrors parameter:

parameters:
	ignoreErrors:
		-
			identifier: typeAlias.invalidType

Rules that report this error #

PHPStan\Rules\Classes\LocalTypeAliasesRule [1]
PHPStan\Rules\Classes\LocalTypeTraitAliasesRule [1]
PHPStan\Rules\Classes\LocalTypeTraitUseAliasesRule [1]

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