Run results for: test spread in reduce

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 12_1_4 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 12

Operating system: iOS 12.1.4

Device Platform: Mobile

Date tested: 5 years ago

Test name	Executions per second
mutable	1551698.8 Ops/sec
immutable	75878.5 Ops/sec

Tests:

mutable
[...Array(10).keys()].reduce((acc, val) => { acc[val] = val; return acc; }, {})
immutable
[...Array(10).keys()].reduce((acc, val) => { return { ...acc, [val]: val }; }, {})