psalm not understanding properties-of<Class> assignment to a ParentClass property, if properties-of<ParentClass> is used

[juacala]

psalm does not recognize the properties-of<Class> type if it's assigned to a property of a class, and then it gets fetched using properties-of

See: https://psalm.dev/r/e76bd1defd

<?php

// Class we'll load properties-of into a property of another class
class DBLoginInfo
{
    /**
     * @param string $host 
     * @return void 
     */
    public function __construct(
        public string $host
       )
       {}
}

// Load in properties one way
class DBConnectInfoAsArray
{
    /**
     * @param properties-of<DBLoginInfo> $read
     */
    public function __construct(
        public array $read
    )
    {}
}

// Load in properties another way
class DBConnectInfoAsArray2
{
    /** @param properties-of<DBLoginInfo> */
    public array $read;
    public function __construct(array $read)
    {
        $this->read = $read;
    }
}

/**
* Fail: Try to access host from first parent class
* @param properties-of<DBConnectInfoAsArray> $info
* @return void
*/
function blah(array $info)
{
    $read = $info['read'];
    echo $read['host'];
}

/**
* Fail: try to access host from second parent class
* @param properties-of<DBConnectInfoAsArray2> $info
* @return void
*/
function blah2(array $info)
{
    $read = $info['read'];
    // This says it's just a generic array... it doesn't seem to understand the docblock type
    echo $read['host'];
}

/**
* Pass if you explicitly assign @var
* This one works by using @var to tell it what it should be, but it seems
*   like psalm should have been able to tell what it is without using an @var
* @param properties-of<DBConnectInfoAsArray2> $info
* @return void
*/
function blah3(array $info)
{
    /** @var properties-of<DBLoginInfo> */
    $read = $info['read'];
    echo $read['host'];
}

/**
* Pass if you don't use properties-of<DBConnectInfoAsArray>, and load the class itself.
* @return void
*/
function blah4(DBConnectInfoAsArray $info)
{
    $read = $info->read;
    echo $read['host'];
}

[psalm-github-bot[bot]]

I found these snippets:

https://psalm.dev/r/e76bd1defd

```php $read */ public function __construct( public array $read ) {} } // Load in properties another way class DBConnectInfoAsArray2 { /** @param properties-of */ public array $read; public function __construct(array $read) { $this->read = $read; } } /** * Fail: Try to access host from first parent class * @param properties-of $info * @return void */ function blah(array $info) { $read = $info['read']; echo $read['host']; } /** * Fail: try to access host from second parent class * @param properties-of $info * @return void */ function blah2(array $info) { $read = $info['read']; // This says it's just a generic array... it doesn't seem to understand the docblock type echo $read['host']; } /** * Pass if you explicitly assign @var * This one works by using @var to tell it what it should be, but it seems * like psalm should have been able to tell what it is without using an @var * @param properties-of $info * @return void */ function blah3(array $info) { /** @var properties-of */ $read = $info['read']; echo $read['host']; } /** * Pass if you don't use properties-of, and load the class itself. * @return void */ function blah4(DBConnectInfoAsArray $info) { $read = $info->read; echo $read['host']; } ``` ``` Psalm output (using commit 16b24bd): ERROR: InvalidArrayAccess - 47:10 - Cannot access array value on non-array variable $read of type properties-of INFO: MixedArgument - 47:10 - Argument 1 of echo cannot be mixed, expecting string INFO: PossiblyUndefinedStringArrayOffset - 59:10 - Possibly undefined array offset ''host'' is risky given expected type 'array-key'. Consider using isset beforehand. INFO: MixedArgument - 59:10 - Argument 1 of echo cannot be mixed, expecting string ```