How to query images co-located to Json in the same folder

[gvocale]

My content structure looks like this:

/content
  /item-1
    /index.json
    /image-1.jpg
    /image-2.jpg
  /item-2
    /index.json
    /image-1.jpg
    /image-2.jpg
  /item-3
    /index.json
    /image-1.jpg
    /image-2.jpg

I am using gatsby-transformer-json to get a list of all Json files and I can query their fields successfully.

The issue is I can't manage to access the co-located images easily.

I was hoping, from each returned Json node, to be able to query its parent Directory, then find inside nodes of image sharp, but none is returned.

To access the images in a component I have instead to do a static query for all image like the following, which are thousands, save them into a hook, then filter by parent directory. The query for all images is very slow and I am possibly running out of memory with Error: write EPIPE possibly for the same reason.

export const useAllImages = () => {
  const { allImageSharp } = useStaticQuery<AllImagesQuery>(
    graphql`
      query AllThumbImages {
        allImageSharp {
          edges {
            node {
              gatsbyImageData(width: 720)
              parent {
                ... on File {
                  name
                  relativeDirectory
                }
              }
            }
          }
        }
      }
    `
  );

  return allImageSharp;
};

  const allImages = useAllImages();

  const image = allImages.edges.find(({ node }) => {
    const { name, relativeDirectory } = node.parent;
    return relativeDirectory === slug;
  });

  const gatsbyImage = getImage(image);

Ideally I would love to be able to do something like

const data = useStaticQuery<LatestAddedQuery>(graphql`
    {
      allJson(limit: 6) {
        edges {
          node {         
            parent {
              ... on Directory {
                allImageSharp {
                  edges {
                    node {
                      gatsbyImageData
                    }
                  }
                }
              }
            }
            slug
            ...
          }
        }
      }
    }
  `);