Pipelines with bluebird

pipeline.js

const Promise = require("bluebird");

//  It's that simple
const Pipeline = async a => {
  return await Promise.reduce(
    a.slice(1, a.length),
    (ac, cv) => {
      return cv(ac);
    },
    a[0]
  );
};

const capitalize = str => str[0].toUpperCase() + str.substring(1);
const splitOnSpaces = str => str.trim().split(" ");
const getLastOfArr = arr => arr.pop();
const toUpper = values => values.toUpperCase();
const wait = async values => {
  await Promise.delay(500);
  return values;
};

Pipeline([
  "david roman",
  capitalize,
  wait,
  splitOnSpaces,
  getLastOfArr,
  toUpper
]).then(data => console.log(data));