const urls = ['url1', 'url2', 'url3'];

​

function fakeFetch(url, params = '-') {

  // этот вывод в консоль покажет порядок вызовов с их входящими параметрами

  console.log(`fakeFetch to: ${url} with params: ${params}`);

  return new Promise(resolve => {

    setTimeout(() => resolve(`${url} is DONE`), 1000);

  })

};

​

function recursionWay(callback) {  

    const recursion = (arr = [], promise = Promise.resolve()) => {

        if (!arr.length) { 

            return promise;

        }

        const [url, ...restUrls] = arr;

        return promise

            .then(res => recursion(restUrls, fakeFetch(url, res)));

    }

    recursion(urls)

        .then(result => callback(result));

}

recursionWay(result => console.log(`result: ${result}`))

​