Benchmark: Array.prototype.concat vs spread operator

Tests:

Array.prototype.concat
var params = [ "hello", "good_bye", "well_then" ]; for(let i=0; i < 10; i++){ params = params.concat(params); }
spread operator
var params = [ "hello", "good_bye", "well_then" ]; for(let i=0; i < 10; i++){ params = [...params, ...params]; }

Rendered benchmark preparation results:

Previous results

Test case name	Result
Array.prototype.concat
spread operator

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Latest run results:

Run details: (Test run date: 2025 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36

Browser/OS: Chrome 65 on Mac OS X 10.12.6

Test name	Executions per second
Array.prototype.concat	60943.9 Ops/sec
spread operator	3962.6 Ops/sec

Array.prototype.concat vs spread operator (version: 0)