Run results for: Array.reduce2

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:62.0) Gecko/20100101 Firefox/62.0

Browser: Firefox 62

Operating system: Linux

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; }, {});