Run results for: Spread vs Assign benchmark 2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36

Browser: Chrome 94

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Basic object spread	13429249.0 Ops/sec
Basic assign operator	3260257.8 Ops/sec
Assign with empty object	3591374.2 Ops/sec
Spread operator with two existing objects	860183.3 Ops/sec
Object assign with two existing objects	4840928.5 Ops/sec

Tests:

Basic object spread
const obj = { foo: 1, bar: 2 }; const finalObject = { baz: 3, ...obj };
Basic assign operator
const obj = { foo: 1, bar: 2 }; const finalObject = Object.assign({baz: 3}, obj);
Assign with empty object
const obj = { foo: 1, bar: 2 }; Object.assign({}, obj, { baz: 3 });
Spread operator with two existing objects
const obj = { foo: 1, bar: 2 }; const obj2 = { baz: 3 }; const finalObject = {...obj2, ...obj };
Object assign with two existing objects
const obj = { foo: 1, bar: 2 }; const obj2 = { baz: 3 }; const finalObject = Object.assign(obj2, obj );