Access to an undefined property in PostgresEngineServiceProvider

[devNoiseConsulting]

larastan/phpstan is giving the following error for PostgresEngineServiceProvider.php

 ------ -------------------------------------------------------------------------------------------------
  Line   PostgresEngineServiceProvider.php
 ------ -------------------------------------------------------------------------------------------------
  56     Access to an undefined property ScoutEngines\Postgres\PostgresEngineServiceProvider::$callback.
 ------ -------------------------------------------------------------------------------------------------

So the problem code is as follows:

            Builder::macro($name, function () use ($class) {
                $this->callback = function ($builder, $config) use ($class) {
                    return new $class($builder->query, $config);
                };

                return $this;
            });

[devNoiseConsulting]

The code works, but is not the easiest to read. I've decided to make the builderMacro object before calling Builder::macro().

            $builderMacro = (object) ['callback' => function (Builder $builder, mixed $config) use ($class) {
                return new $class($builder->query, $config);
            }];
            Builder::macro($name, $builderMacro);

Needs some testing to see if this change works as expected.

[devNoiseConsulting]

The code change broke the driver. Received a Object of type stdClass is not callable error when testing on an example project.