Function calculateTotal

context/mainContext.js:13–20

(cart)

const SiteContext = React.createContext()

function calculateTotal(cart) {
  const total = cart.reduce((acc, next) => {
    const quantity = next.quantity
    acc = acc + JSON.parse(next.price) * quantity
    return acc
  }, 0)
  return total
}

class ContextProviderComponent extends React.Component {
  componentDidMount() {