Поиск из пунктов

const inputCities = [ 
    { name: "Piter" }, 
    { name: "Moscow" }, 
    { name: "Minsk" }, 
    { name: "Paris" }, 
    { name: "Monako" }, 
] 
let cities = [] 
 
const input = document.querySelector('input'); 
input.oninput = () => { 
    cities = inputCities; 
    cities = cities.filter(c => c.name.startsWith(input.value)) 
    console.log(cities) 
}

<input/>