How do I group an array of objects in JavaScript and sum a field?

import { groupBy } from ' groupjs_by ' ; const byStatus = groupBy ( orders , ' status ' ) . sum ( ' revenue ' , ' amount ' ) . count ( ' orders ' ) .

Source: [Dev.to](https://dev.to/juli04guilar/how-do-i-group-an-array-of-objects-in-javascript-and-sum-a-field-54gi)