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aggregateBy<T>
Applies the specified AggregateDescriptors
to the data. Returns an AggregateResult
instance.
ts
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 that will be executed.
transformers (reduce: Combinator) => Transformer
For internal use.
Returns
AggregateResult - The aggregated result. For more information, refer to the aggregateresult configuration.