promise.es6

import request from "request-promise";
import {readFile, writeFile} from "mz/fs";

let uri = "http://localhost:8917";

request.get({uri})
    .then(body => writeFile(__dirname + "/foo", body))
    .then(() => readFile(__dirname + "/foo"))
    .then(contents => writeFile(__dirname + "/bar", contents.toString().split("").reverse().join("")))
    .then(() => request({uri, method: "POST"}))
    .then(res => console.log("posted file"))
    .catch(err => console.error(err.stack));