Run results for: reduce vs map and filter

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36

Browser: Chrome 91

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
reduce	7115491.0 Ops/sec
filter and map	11809668.0 Ops/sec

Tests:

reduce
var dogs = [ {name: 'Archie', breed: 'Lurcher', owner: 'Jack'}, {name: 'Charlie', breed: 'Pug', owner: 'John'}, {name: 'Buddy', breed: 'Pug', owner: 'Mike'} ] dogs = dogs.reduce((total, current) => current.breed === "Pug" ? [...total, current.owner] : total, []);
filter and map
var dogs = [ {name: 'Archie', breed: 'Lurcher', owner: 'Jack'}, {name: 'Charlie', breed: 'Pug', owner: 'John'}, {name: 'Buddy', breed: 'Pug', owner: 'Mike'} ] dogs = dogs.filter(dog => dog.breed === 'Pug').map(dog => dog.owner);