Benchmark: property assign vs spread operator

Tests:

property assignment
var params = { b:"hello", c: true, d:7 }; for (var i = 0; i < 10000; i++) { params[i] = i; }
spread operator
var params = { b:"hello", c: true, d:7 }; for (var i = 0; i < 10000; i++) { params = { [i]: i, ...params}; }

Rendered benchmark preparation results:

Previous results

Test case name	Result
property assignment
spread operator

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Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.149 Safari/537.36

Browser/OS: Chrome 80 on Mac OS X 10.15.4

Test name	Executions per second
property assignment	7424.1 Ops/sec
spread operator	0.1 Ops/sec

property assign vs spread operator (version: 0)