ResolveInfo::getFieldSelectionWithAliases() => now add instance types and the folded union types to the returned schema.

[zephyx]

Hi,

After using the ResolveInfo::getFieldSelectionWithAliases() method I needed some additionnal data in order to go through the all schema properly.
So I have updated the method to add:

• Type instance for each alias level (not set at field level in order to keep the schema simple and avoid breaking changes)
• Union type management: This allows us to properly go through unions types and retrieve all their respective subfields/args

Before this update, we were able to go through union types but it was unreliable, some fields with the same name in different unioned types could be substituted for others.
Now it's consistent and it allows me in my application to handle a proper infinite level eager loading across the entire schema with unions.

[spawnia]

Please fix the PHPStan issues, then mark as ready.

[zephyx]

Hi, thank you for the review.

How should I fix this PHPStan error ?

Cannot access offset 'customA' on (callable(): iterable)|iterable.

On tests/Type/ResolveInfoTest.php

Line 741

Something like this ?

assert(is_array($myCustomWithObjectType->config['fields']), 'ensured by type config');

[spawnia]

Hi, thank you for the review.

How should I fix this PHPStan error ?

Cannot access offset 'customA' on (callable(): iterable)|iterable.

On tests/Type/ResolveInfoTest.php

Line 741

Something like this ?

assert(is_array($myCustomWithObjectType->config['fields']), 'ensured by type config');

I would do something like this:

$fields = $myCustomWithObjectType->config['fields'];
assert(is_array($fields), 'ensured by type config');

$myCustomType = $fields['customA'];

[spawnia]

Thank you, released with https://github.com/webonyx/graphql-php/releases/tag/v15.20.0.