JavaScript でスプレッド構文を使ってオブジェクトを連結する

const firstPerson = {
    name: "Sam",
    age: 18
}
 
const secondPerson = {
    age: 25,
    type: "admin"
}
 
const mergedObjects = {...firstPerson, ...secondPerson};
console.log(mergedObjects); // {name: "Sam", age: 25, type: "admin"}