una funcion que me genere hilos por cada usuario entre

const user = [
    {
        name: 'José',
        age: 40,
        country: 'Spain'
    },
    {
        name: 'Juan',
        age: 50,
        country: 'Spain'
    },
    {
        name: 'Pedro',
        age: 20,
        country: 'Spain'
    },
    {
        name: 'Pablo',
        age: 30,
        country: 'Spain'
    },
    {
        name: 'Lucas',
        age: 60,
        country: 'Spain'
    },
    {
        name: 'Adrián',
        age: 70,
        country: 'Spain'
    }
];

function generateUserThread(users, country) {
    return users
        .filter(user => user.country === country)
        .map(user => user.name);
}

console.log(generateUserThread(user, 'Spain'));