Run results for: reduce creation x

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 17_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.3.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 17

Operating system: iOS 17.3.1

Device Platform: Mobile

Date tested: 9 months ago

Test name	Executions per second
spread insert	0.1 Ops/sec
assign insert	230.3 Ops/sec
map	1815.5 Ops/sec
mutation	3598.6 Ops/sec
tuple	2858.2 Ops/sec

Script Preparation code:

var data = Array.from({ length: 10000 }).map((_, idx) => idx)

Tests:

spread insert
data.reduce((acc, val) => ({ ...acc, [val]: val }), {})
assign insert
data.reduce((acc, val) => Object.assign(acc, {[val]: val}))
map
Object.fromEntries(data.reduce((acc, val) => acc.set(val, val), new Map()))
mutation
data.reduce((acc, val) => acc[val] = val, {})
tuple
Object.fromEntries(data.map((v) => [v, v]))

Run results for: reduce creation x

spread insert

assign insert

map

mutation

tuple