<?php
add_action('graphql_register_types', 'PostsWithPaginationConnection', 99);
function PostsWithPaginationConnection()
{
    $connection_args = array_merge(['offset' => [
        'type' => 'Int',
        'description' => __('Offset for current results', 'wp-graphql'),
    ]], \WPGraphQL\Connection\PostObjects::get_connection_args());
    $config = [
        'fromType' => 'RootQuery',
        'toType' => 'Post',
        'fromFieldName' => 'postsWithPagination',
        'connectionTypeName' => 'PostsWithPaginationConnection',
        'resolve' => function ($id, $args, $context, $info) {
            $resolver = new \WPGraphQL\Data\Connection\PostObjectConnectionResolver($source, $args, $context, $info, 'post');
            if (!is_null($args["offset"])) {
                $resolver->setQueryArg('posts_per_page', !is_null($args["first"]) ? $args["first"] : 10);
                $resolver->setQueryArg('offset', $args["offset"]);
            }
            $connection = $resolver->get_connection();
            return $connection;
        },
        'connectionArgs' => $connection_args,
        'resolveNode' => function ($id, $args, $context, $info) {
            return \WPGraphQL\Data\DataSource::resolve_post_object($id, $context);
        },
    ];
    register_graphql_connection($config);
};