Function sort

Example

  // Test single field sorting
  const sortValidator = TestValidator.sort("article sorting")(
    (sortable) => api.getArticles({ sort: sortable })
  )("created_at")(
    (a, b) => new Date(a.created_at).getTime() - new Date(b.created_at).getTime()
  );

  await sortValidator("+"); // ascending
  await sortValidator("-"); // descending

  // Test multi-field sorting with filtering
  const userSortValidator = TestValidator.sort("user sorting")(
    (sortable) => api.getUsers({ sort: sortable })
  )("status", "created_at")(
    (a, b) => {
      if (a.status !== b.status) return a.status.localeCompare(b.status);
      return new Date(a.created_at).getTime() - new Date(b.created_at).getTime();
    },
    (user) => user.isActive // only test active users
  );

  await userSortValidator("+", true); // ascending with trace logging
  
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