Run results for: test spread in reduce

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.105 Safari/537.36

Browser: Chrome 84

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
mutable	1131205.0 Ops/sec
immutable	551921.4 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 }; }, {})