To use the reduce function to return a JavaScript array, we return the array in the reduce callback.
For instance, we write
const store = [0, 1, 2, 3, 4];
const stored = store.reduce((pV, cV, cI) => {
return [...pV, cV];
}, []);
console.log(stored);
to call store.reduce with a callback that destructures the pV array we get from the reduce process.
And then we spread the entries from there and the put cV at the end of it and return the array.
