sortable-accumulator

Install

npm install sortable-accumulator

Use

import { SortableAccumulator } from 'sortable-accumulator';
import { employeeList } from './employeeList';

let sa = new SortableAccumulator();
employeeList.forEach(employee => sa.add(employee.firstName));

console.log('the most common name is', sa.sort(true)[0].value);