Benchmark: Map vs Map vs Foreach vs for

Script Preparation code:

var a = new Array(1000);
for (let i = 0; i < a.length; i++) {
  a[i] = {};
}

Tests:

Rendered benchmark preparation results:

Previous results

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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_14_5) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.1.1 Safari/605.1.15

Browser/OS: Safari 12 on Mac OS X 10.14.5

Map vs Map vs Foreach vs for (version: 5)