Grouping object by key value using reduce()

Grouping objects by key-value

const users = [ { name: 'Ram', etype: 'Employee }, { name: 'Shyam', etype: 'Contract' }, { name: 'Samir', etype: 'Employee' }, { name: 'Sunil', etype: 'Contract' }, { name: 'Bhavin', etype: 'Contract' } ]; const groupedUsers = users.reduce((obj, user) => { const etype = user.etype; if (!obj[etype]) { obj[etype] = [] } obj[etype].push(user.name); return obj }, {}) console.log(groupedUsers); // { Employee: [ 'Ram', 'Samir' ], Contract:[ 'Shyam', 'Sunil','Bhavin' ] }