Format a string with variables passed as an object

format.js

function format(string, keyValues) {
  const regex = /{{([a-zA-Z]+)}}/g;
  return string.replace(regex, (match, key) => {
    return keyValues[key];
  });
}

console.log(format('Hello {{name}}', {name: 'Alessio'})); // Hello Alessio
console.log(format('The price is {{currency}} {{price}}', {price: '10.5', currency: 'EUR'})); // The price is EUR 10.5
console.log(format('Il prezzo è {{price}}{{currency}}', {price: '10.5', currency: 'EUR'})); // Il prezzo è 10.5EUR