Incorrect behavior of FunctionLikeToFirstClassCallableRector

[samsonasik]

Bug Report

Subject	Details
Rector version	last dev-main
Installed as	composer dependency

Minimal PHP Code Causing Issue

See https://getrector.com/demo/371133f2-0c1c-4d0f-8e5c-958d89098e39

<?php

class SkipCallableParamAssignFluentMultiParams
{
    private $transform;

    /**
     * @param callable(mixed $datum, int|string|null $key): mixed $callable
     */
    public function withTransform(callable $callable)
    {
        $this->transform = $callable;
        return $this;
    }

    public function run($value, $optionalData = [])
    {
        var_dump(($this->transform)($value, $optionalData));
    }
}

(new SkipCallableParamAssignFluentMultiParams())
    ->withTransform(fn (string $datum): string => trim($datum))
    ->run('  some data  ');

Responsible rules

• FunctionLikeToFirstClassCallableRector

Expected Behavior

should be skipped to avoid error:

Fatal error: Uncaught TypeError: trim(): Argument #2 ($characters) must be of type string, array given in /in/aWNCA:15
Stack trace:
#0 /in/aWNCA(15): trim('  some data  ', Array)
#1 /in/aWNCA(21): SkipCallableParamAssignFluent->run('  some data  ')
#2 {main}
  thrown in /in/aWNCA on line 15

see

original: works: https://3v4l.org/SqOPO
changed: error https://3v4l.org/8kku6

I think based on signature docblock, the @param callable(mixed $datum, int|string|null $key): mixed $callable should make it skipped.

[samsonasik]

/cc @calebdw if you have a chance, feel free to take a look on this ;), thank you.