Function Injection After

function-injection-after.js

function tacoRank(taco){
  ...
}

function findBestTacos(rankingFunction, restaurants) {
  return restaurants.reduce((acc, next) => { return acc.concat(next.tacos) }, [])
                    .sort((a, b) => { rankingFunction(a) - rankingFunction(b) })
                    .slice(0, 10);
}

findBestTacos(tacoRank, restaurants);