Run results for: Different ways of writing Array.reduce

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36

Browser: Chrome 70

Operating system: Windows

Device Platform: Desktop

Date tested: 6 years ago

Tests:

Using the spread operator
const users = [{ id: 1, name: 'foo' }, { id: 2, name: 'bar' }] users.reduce((x, user) => ({...x, [user.id]: user}), {});
Using Object.assign
const users = [{ id: 1, name: 'foo' }, { id: 2, name: 'bar' }] users.reduce((x, user) => Object.assign(x, { [user.id]: user }), {});
Returning the reference
const users = [{ id: 1, name: 'foo' }, { id: 2, name: 'bar' }] users.reduce((x, user) => { x[user.id] = user; return x; }, {});