new-switch-cases.js

const expr = 'Papayas';

// old way
switch (expr) {
  case 'Oranges':
    console.log('Oranges are $0.59 a pound.');
    break;
  case 'Apples':
    console.log('Apples are $0.32 a pound.');
    break;
  case 'Bananas':
    console.log('Bananas are $0.48 a pound.');
    break;
  case 'Cherries':
    console.log('Cherries are $3.00 a pound.');
    break;
  case 'Mangoes':
    console.log('Mangoes and papayas are $2.79 a pound.');
    break;
  case 'Papayas':
    console.log('papayas are $2.79 a pound.');
    break;
  default:
    console.log('Sorry, we are out of ' + expr + '.');
}

// create a function to handle the switch statement
const match = (expression, cases) => {
  return cases[expression] || cases?.default;
};

// new way
const matched = match(expr, {
  Oranges: 'Oranges are $0.59 a pound.',
  Mangoes: 'Mangoes and papayas are $2.79 a pound.',
  Papayas: 'Mangoes and papayas are $2.79 a pound.',
  default: `Sorry, we are out of ${expr}.`,
});

console.log(matched);