Loop: running promises in sequential.

index.js

/**
 * @description Runs getUser() in sequential.
 * @return {Promise<void>}
 */
async function example() {
    for (let i = 0; i < 10; i++) {
        await getUser();
    }
}

/**
 * @description Runs getUser() in parallel.
 * @return {Promise<void>}
 */
async function example() {
    [1,2,3,4,5,6,7,8,9].forEach(async () => {
        await getUser();
    })
}

/**
 * @description Simulates a HTTP request.
 * @return {Promise<any>}
 */
const getUser = () => new Promise((resolve) => {
    setTimeout(() => {
        console.log('Current date:', new Date());
        resolve();
    }, 4000);
});

example()
    .then(() => console.log('done.'));