Easily make HTTPS requests that return promises w/ nodejs

Readme.md

Javascript request yak shave

I wanted to easily make HTTP requests (both GET & POST) with a simple interface that returns promises.

The popular request & request-promises package are good, but I wanted to figure out how to do it w/out using external dependencies.

The key features are:

• the ability to set a timeout
• non-200 responses are considered errors that reject the promise.
• any errors at the TCP socker/DNS level reject the promise.

Hat tip to webivore and the Node HTTP docs, whose learning curve I climbed.

It's great for AWS Lambda.

Examples

const url = require('url');
const req = require('httpPromise');
// Simple get request
req("https://httpbin.org/get")
  .then((res) => { console.log(res)})
  .catch((err) => { console.log("oh no: " + err)});

// Get req w/ timeout and extra headers:
req(Object.assign({}, url.parse("https://httpbin.org/get"), {timeout: 2000, headers: {'X-MyHeader': 'MyValue'}}))

// POST data:
req(Object.assign({}, url.parse("https://httpbin.org/post"), { method: 'POST', headers: {'Content-Type': 'application/x-www-form-urlencoded'}}), "foo=bar")
  .then((res) => { console.log(res)})
  .catch((err) => { console.log("oh no: " + err)});

httpPromise.js

'use strict';

const https = require('https');
// Inspired from https://gist.github.com/ktheory/df3440b01d4b9d3197180d5254d7fb65

module.exports = ((urlOptions, data) => {
  return new Promise((resolve, reject) => {
    const req = https.request(urlOptions,
      (res) => {
        let body = '';
        res.on('data', (chunk) => (body += chunk.toString()));
        res.on('error', reject);
        res.on('end', () => {
          if (res.statusCode >= 200 && res.statusCode <= 299) {

            resolve({statusCode: res.statusCode, headers: res.headers, body: body});
          } else {
            reject('Request failed. status: ' + res.statusCode + ', body: ' + body);
          }
        });
      });
    req.on('error', reject);
    req.write(data, 'binary');
    req.end();
  });
});