Run results for: Map() vs Object

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36

Browser: Chrome 105

Operating system: Linux

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Using Object	6253227.0 Ops/sec
Using Map()	2885382.8 Ops/sec

Tests:

Using Object
const arr = [ {name: 'name1', prop: 'prop'}, {name: 'name2', prop: 'prop'}, {name: 'name3', prop: 'prop'}, {name: 'name4', prop: 'prop'} ] const obj = {}; arr.forEach(a => obj[a.name] = a)
Using Map()
const arr = [ {name: 'name1', prop: 'prop'}, {name: 'name2', prop: 'prop'}, {name: 'name3', prop: 'prop'}, {name: 'name4', prop: 'prop'} ] const mp = new Map(); arr.forEach((a) => { mp.set(a.name, a); });