payload/test/sort/collections/Posts/index.ts

import type { CollectionConfig } from 'payload'

export const postsSlug = 'posts'

export const PostsCollection: CollectionConfig = {
  slug: postsSlug,
  admin: {
    useAsTitle: 'text',
  },
  fields: [
    {
      name: 'text',
      type: 'text',
    },
    {
      name: 'number',
      type: 'number',
    },
    {
      name: 'number2',
      type: 'number',
    },
    {
      name: 'group',
      type: 'group',
      fields: [
        {
          name: 'text',
          type: 'text',
        },
        {
          name: 'number',
          type: 'number',
        },
      ],
    },
  ],
}