This repository demonstrates a bug in Psalm dev-master when used with PHPStan 2.1.1 on PHP 8.4.

When running Psalm with PHPStan 2.1.1 installed, we encounter a TypeError in Psalm's ConstantTypeResolver:

Uncaught TypeError: Psalm\Internal\Codebase\ConstantTypeResolver::getLiteralTypeFromScalarValue():
Argument #1 ($value) must be of type array|string|int|float|bool|null, PropertyHookType given

1. Clone this repository
2. Run: docker compose up --build

The Docker setup provides a consistent environment with:

• PHP 8.4
• Psalm (dev-master)
• PHPStan 2.1.1

• composer.json - Specifies the exact versions of Psalm and PHPStan
• psalm.xml - Basic Psalm configuration
• Dockerfile - Sets up PHP 8.4 environment
• docker-compose.yml - Runs Psalm with --no-cache