Finding values that are not null or undefined without nullish coalescing

es2020.nullishCoalescing.before.js

const useCoolFeature1 = true
const useCoolFeature2 = false
const useCoolFeature3 = undefined
const useCoolFeature4 = null

const getUserFeaturePreference = (featurePreference) => {
  if (featurePreference || featurePreference === false) {
    return featurePreference
  }
  return true
}

getUserFeaturePreference(useCoolFeature1) // true
getUserFeaturePreference(useCoolFeature2) // false
getUserFeaturePreference(useCoolFeature3) // true
getUserFeaturePreference(useCoolFeature4) // true

Your suggestion is indeed simpler for the case of checking for a boolean. This example is a bit contrived, but for the purpose of demonstrating the differences between this example and the nullish coalescing operator here (https://gist.github.com/thawkin3/8318366aac732febe5e03b8cc460e1c5), the example should suffice.