Run results for: Map Includes vs Some Simplified

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0

Browser: Firefox 115

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Some

27K/s

Map Includes

10K/s

View exact numbers

Test name	Executions per second
✓ Some	26,991 Ops/sec
Map Includes	9,853 Ops/sec

Script Preparation code:

var data = []

for (let i = 0; i < 5000; ++i) data.push({ username: 'toto' })
data.push({ username: 'tata' })
for (let i = 0; i < 2500; ++i) data.push({ username: 'toto' })

Tests:

Map Includes
data.map(({username}) => username).includes("tata");
Some
data.some(({username}) => username == "tata");