Function groupedByOne

Groups an array of objects by a single key and returns an array of GroupedObjects.

Example

const arr = [
  { id: 1, name: 'Alice', age: 30 },
  { id: 2, name: 'Bob', age: 25 },
  { id: 3, name: 'Charlie', age: 30 }
];

groupedByOne(arr, 'age', ['name']);
// => { ok: true, value:
// [
//   { group: '30', items: [{ name: 'Alice' }, { name: 'Charlie' }] },
//   { group: '25', items: [{ name: 'Bob' }] }
// ]
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Example

Handle an invalid input:

const emptyArr = [];
groupedByOne(emptyArr, 'age');
// => { ok: false, error: Error('[collections.groupedByOne] Input must be an array and cannot be empty') }
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