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import {sortAlphabetically, sortByCount} from '#sort';
import {filterByCount, stitchArrays} from '#sugar';
export default {
  sprawl({groupData}) {
    return {groupData};
  },
  query({groupData}, spec) {
    const groups = sortAlphabetically(groupData.slice());
    const counts = groups.map(group => group.albums.length);
    filterByCount(groups, counts);
    sortByCount(groups, counts, {greatestFirst: true});
    return {spec, groups, counts};
  },
  relations(relation, query) {
    return {
      page: relation('generateListingPage', query.spec),
      groupLinks:
        query.groups
          .map(group => relation('linkGroup', group)),
    };
  },
  data(query) {
    return {
      counts: query.counts,
    };
  },
  generate(data, relations, {language}) {
    return relations.page.slots({
      type: 'rows',
      rows:
        stitchArrays({
          link: relations.groupLinks,
          count: data.counts,
        }).map(({link, count}) => ({
            group: link,
            albums: language.countAlbums(count, {unit: true}),
          })),
    });
  },
};
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