All Components

aggregateBy

Applies the specified AggregateDescriptors to the data.

Returns an AggregateResult instance.

const data = [
   { unitPrice: 23, unitsInStock: 21 },
   { unitPrice: 10, unitsInStock: 12 },
   { unitPrice: 20, unitsInStock: 33 }
];

const result = aggregateBy(data, [
  { aggregate: "sum", field: "unitPrice" },
  { aggregate: "sum", field: "unitsInStock" }
]);

//output:
// {
//     "unitPrice": { "sum": 53 },
//     "unitsInStock": { "sum": 66 }
// }

Parameters

data T[]

The data on which the calculation will be executed.

descriptors AggregateDescriptor[]

The aggregate operations to be executed.

transformers (reduce: Combinator) => Transformer

For internal use.

Returns

AggregateResult - The aggregated result.
For more information, refer to the aggregateresult configuration.

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