Example.js

// Composable
const useBurger = () => {
  const lettuce = ref(true);
  const ketchup = ref(true);
return {
  lettuce,
  ketchup,
}


// Component
setup() {
  // We can destructure but still keep our reactivity
  const { ketchup } = useBurger();
  watchEffect(() => console.log(ketchup.value));
  return {
    ketchup,
    removeKetchup: () => ketchup.value = false
  };
}



// If you don't want to destructure the values, you can always wrap it in reactive and it
// will be converted to a reactive object

// Component
setup() {
    // Wrap in `reactive` to make it a reactive object
    const burger = reactive(useBurger());
    watchEffect(() => console.log(burger.ketchup));
        return {
        burger,
        removeKetchup: () => burger.ketchup = false
    }
}



// destruct needs toRefs
const refBurger = ref({ lettuce: true });
const reactiveBurger = reactive({ lettuce: true });

const { lettuce } = toRefs(refBurger.value);
const { lettuce } = toRefs(reactiveBurger);