Benchmark: cmp map vs index

Tests:

index
const generateDefaultTags = (size) => { return Array.from({ length: size }, (_, index) => ({ id: index, key: `key-${index}`, value: `value-${index}` })); }; const arr = generateDefaultTags(100); const tag = { id: 1111, key: `key-`, value: `value-` } const i = arr.findIndex(x => x.id === 99) arr[i] = tag
map
const generateDefaultTags = (size) => { return Array.from({ length: size }, (_, index) => ({ id: index, key: `key-${index}`, value: `value-${index}` })); }; const arr = generateDefaultTags(100); const tag = { id: 1111, key: `key-`, value: `value-` } arr.map((el) => el.id === 99 ? tag : el)

Rendered benchmark preparation results:

Previous results

Test case name	Result
index
map

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser/OS: Chrome 137 on Linux

index

127K/s

map

122K/s

View exact numbers

Test name	Executions per second
✓ index	127,065 Ops/sec
map	122,155 Ops/sec

cmp map vs index (version: 1)