Run results for: property assign vs spread operator (iterated)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.1 Safari/605.1.15

Browser: Safari 13

Operating system: Mac OS X 10.15.4

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
property assignment	1847519.0 Ops/sec
spread operator	1371.8 Ops/sec

Tests:

property assignment
var params = { b:"hello", c: true, d:7 }; for (var i = 0; i < 100; i++) { params[i] = i; }
spread operator
var params = { b:"hello", c: true, d:7 }; for (var i = 0; i < 100; i++) { params = { [i]: i, ...params}; }