Run results for: Map & Set vs Reduce & Includes

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Reduce & Includes

8.9M/s

Map & Set

5.3M/s

View exact numbers

Test name	Executions per second
✓ Reduce & Includes	8,919,644 Ops/sec
Map & Set	5,303,696 Ops/sec

Script Preparation code:

filteredResults = [{ some: 'yes', profile: 'A'}, { some: 'yes', profile: 'A'}, { some: 'yes', profile: 'B'}, { some: 'C', profile: 'B'}, { some: 'yes', profile: 'B'}]

Tests:

Map & Set
const formattedProfiles = filteredResults.map(result => result.profile) const uniqueProfiles = [...new Set(formattedProfiles)]
Reduce & Includes
const formattedProfiles = filteredResults.reduce((uniqueProfiles, { profile }) => { return uniqueProfiles.includes(profile) ? uniqueProfiles : [...uniqueProfiles, profile]; }, []);