Run results for: Array vs Generator comprehension

Run details:

User agent: Mozilla/5.0 (Android 10; Mobile; rv:109.0) Gecko/112.0 Firefox/112.0

Browser: Firefox Mobile 112

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Generator	4411.4 Ops/sec
Array	8087.5 Ops/sec

Script Preparation code:

var map = new Map()
for (let i = 0; i < 500; i++) {
  map.set(i.toString()+"_", i)
}

function* transform(input) {
  for (const [k,v] of input) {
    yield [k+"_2", v]
  }
}

function mapFn([k, v]) {
  return [k+"_2", v]
}

Tests:

Generator
const newMap = new Map(transform(map))
Array
const newMap = new Map([...map].map(mapFn))