Promise Sequence

sequence.js

function promiseSequence (array, values = [], fnName, args = []) {

  return new Promise((resolve, reject) => {
    if (array.length !== 0) {
      array[0][fnName].apply(array[0], args)
        .then(data => {
          values.push(data);
          array.splice(0, 1);
          promiseSequence(array, values, fnName, args)
            .then(() => {
              resolve(values);
            })
            .catch(err => {
              reject(err);
            });
        })
        .catch(err => {
          reject(err);
        });
    } else {
      resolve(values);
    }
  });

}