Benchmark: Set in reduce vs spread and set later

Tests:

Set in reduce
const permissions = { foo: ['a', 'b', 'c', 'd', 'e'], bar: ['a', 'c', 'd', 'z'], baz: ['a', 'b', 'e', 'z']} const positionsSet = Object.values(permissions).reduce( (result, businessPositions) => { businessPositions.forEach(position => result.add(position)) return result }, new Set(), ) const positions = [...positionsSet]
Set after reduce
const permissions = { foo: ['a', 'b', 'c', 'd', 'e'], bar: ['a', 'c', 'd', 'z'], baz: ['a', 'b', 'e', 'z']} const allPositions = Object.values(permissions).reduce( (result, businessPositions) => [...businessPositions ,...result], [] ) const positions = [...new Set(allPositions)]

Rendered benchmark preparation results:

Previous results

Test case name	Result
Set in reduce
Set after reduce

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Latest run results:

Run details: (Test run date: 3 years ago)

User agent: Mozilla/5.0 (Linux; Android 10; moto g(7) power) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.110 Mobile Safari/537.36

Browser/OS: Chrome Mobile 86 on Android

Test name	Executions per second
Set in reduce	286661.2 Ops/sec
Set after reduce	256792.3 Ops/sec

Set in reduce vs spread and set later (version: 0)