Run results for: filter(Boolean) vs. filter(a => a)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

filter(Boolean)

1K/s

filter(a => a)

1K/s

filter(a => !!a)

967/s

View exact numbers

Script Preparation code:

window.list = [];
for (let i = 0; i < 65536; i++) {
    window.list.push(Math.random() > 0.5 ? 1 : 0);
}

Tests: