@phpstan-readonly

The @phpstan-readonly tag declares that a property may only be written once, during initialization. It covers the same concept as @readonly, which this component already implements bare.

This library recognizes it as an alias: it parses identically to the canonical tag above and produces the exact same tag instance, keeping the vendor-prefixed name it was written with.

PHPStan's PHPDoc basics page confirms PHPStan understands @readonly, but has no separate anchor for this prefixed spelling.