Run results for: Splice vs Spread (immutable only)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:147.0) Gecko/20100101 Firefox/147.0

Browser: Firefox 147

Operating system: Windows

Device Platform: Desktop

Date tested: 4 months ago

Test name	Executions per second
Splice method	5668092.5 Ops/sec
Spread method	4715451.0 Ops/sec

Tests:

Splice method
const arr = [0,1,2,3,4,5,6,7,8,9]; let out = [...arr].splice(2, 1, 123)
Spread method
const arr = [0,1,2,3,4,5,6,7,8,9]; let out = [...arr.slice(0,2), 123, ...arr.slice(3)];