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Error Identifier: sealed.deprecatedTrait

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);

/** @deprecated Use NewTrait instead */
trait DeprecatedTrait {}

/**
 * @phpstan-sealed(AllowedClass)
 * @phpstan-require-extends SomeBase
 */
class MyClass
{
    /** @deprecated */
    use DeprecatedTrait;
}

Why is it reported? #

The @phpstan-sealed PHPDoc tag references a trait that has been marked as @deprecated. Deprecated symbols are scheduled for removal or replacement. Using a deprecated trait in a @phpstan-sealed declaration ties the sealed constraint to an API that will eventually be removed.

How to fix it #

Replace the deprecated trait reference with its non-deprecated replacement:

 <?php declare(strict_types = 1);
 
 /**
- * @phpstan-sealed(DeprecatedTrait)
+ * @phpstan-sealed(NewTrait)
  */
 class MyClass
 {
-    use DeprecatedTrait;
+    use NewTrait;
 }

Or remove the @phpstan-sealed tag if the constraint is no longer needed.

This error is reported by the phpstan-deprecation-rules extension.

How to ignore this error #

You can use the identifier sealed.deprecatedTrait to ignore this error using a comment:

// @phpstan-ignore sealed.deprecatedTrait
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: sealed.deprecatedTrait

Rules that report this error #

• PHPStan\Rules\Deprecations\RestrictedDeprecatedClassNameUsageExtension [1] phpstan/phpstan-deprecation-rules

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