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rspade_system/node_modules/collect.js/docs/api/mapToGroups.md
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Co-Authored-By: Claude <noreply@anthropic.com>
2025-10-21 02:08:33 +00:00

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mapToGroups()

The mapToGroups method iterates through the collection and passes each value to the given callback:

const collection = collect([
  { id: 1, name: 'A' },
  { id: 2, name: 'B' },
  { id: 3, name: 'C' },
  { id: 4, name: 'B' },
]);

const groups = collection.mapToGroups((item, key) => [item.name, item.id]);

// {
//   A: [1],
//   B: [2, 4],
//   C: [3],
// }

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