Recursive Promise

index.js

{
    const readAllRecordsAsync = ({ params }) => {
        return new Promise((resolve, reject) => {
            resolve(scanAsync({ params, records: [] }));
        });
    };

    const scanAsync = ({ params, records }) => {
        records.push(params.n);

        if (params.n === 0) {
            return records;
        }

        return new Promise((resolve, reject) => {
            scan(params, (n) => {
               params.n = n;

               resolve(scanAsync({ params, records }));
            });
        });
    };

    const scan = (params, callback) => {
        callback(params.n - 1);
    };


    readAllRecordsAsync({ 
        params: {
            n: 3
        }
    })
        .then((finalRecords) => {
            console.log(finalRecords);
        })
        .catch(error => {
            console.error(error);
        });
}