Demonstrating JS closures and promises

promises-and-closures.js

const people = {
    1: 'Darren',
    2: 'Devin',
    3: 'Sean',
};

function reportOnId(id) {
    return new Promise((resolve, reject) => {
        const name = people[id];

        if (name) {
            return resolve(name);
        } else {
            return reject('No good');
        }
    });
}

reportOnId(0);