Run results for: my Object.assign-vs-Spread

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36

Browser: Chrome 73

Operating system: Mac OS X 10.14.4

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
Object.assign	3673571.5 Ops/sec
spread operator	3359725.2 Ops/sec

Tests:

Object.assign
const acc = {a : [2,1], b: [1,3], c: [12, 23], d: [5,6]}; const newValue = { e: [3,4]}; return Object.assign(acc, newValue);
spread operator
const acc = {a : [2,1], b: [1,3], c: [12, 23], d: [5,6]}; const newValue = { e: [3,4]}; return { ...acc, ...newValue };