Run results for: FilterMap perf

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36

Browser: Chrome 118

Operating system: Windows

Device Platform: Desktop

Date tested: 4 months ago

Test name	Executions per second
Filter Map	3700.3 Ops/sec
FlatMap	692.1 Ops/sec
Reduce	2.4 Ops/sec
Push	5174.6 Ops/sec

Script Preparation code:

var ingredientsPerServing = Array(10_000).fill().map(() => {
  let o = {
    details: Math.random().toString(),
  }
  if (Math.random() > 0.5) o.measurement = {
    amount: Math.random(),
    unit: Math.random().toString(),
  }
  return o
})

Tests:

Filter Map
ingredientsPerServing .filter((ingredient) => { return ingredient.measurement; }) .map((ingredient) => { return { amount: ingredient.measurement.amount, details: ingredient.details, unit: ingredient.measurement.unit, }; }).length
FlatMap
ingredientsPerServing .flatMap((ingredient) => { return !ingredient.measurement ? [] : [{ amount: ingredient.measurement.amount, details: ingredient.details, unit: ingredient.measurement.unit, }]; }).length
Reduce
ingredientsPerServing .reduce((a, ingredient) => { return !ingredient.measurement ? a : [...a, { amount: ingredient.measurement.amount, details: ingredient.details, unit: ingredient.measurement.unit, }]; }, []).length
Push
ingredientsPerServing .reduce((a, ingredient) => { if (ingredient.measurement) a.push({ amount: ingredient.measurement.amount, details: ingredient.details, unit: ingredient.measurement.unit, }); return a; }, []).length

Run results for: FilterMap perf

Filter Map

FlatMap

Reduce

Push