Benchmark: Array concat vs spread operator vs push comparison

Tests:

Array.prototype.concat
let array = [{'optionA': 1}, {'optionB': 2}, {'optionC': 3}]; return array.concat([{'optionD': 4}, {'optionE': 5}]);
spread operator
let array = [{'optionA': 1}, {'optionB': 2}, {'optionC': 3}]; return [...array, {'optionD': 4}, {'optionE': 5}];
Push
let array = [{'optionA': 1}, {'optionB': 2}, {'optionC': 3}]; array.push([{'optionD': 4}, {'optionE': 5}]); return array;

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.84 Safari/537.36

Browser/OS: Chrome 85 on Windows

Array concat vs spread operator vs push comparison (version: 0)