Mariano Aguero mariano-aguero

How to setup Let's Encrypt for Nginx on Ubuntu 16.04 (including IPv6, HTTP/2 and A+ SLL rating)

There are two main modes to run the Let's Encrypt client (called Certbot):

Standalone: replaces the webserver to respond to ACME challenges
Webroot: needs your webserver to serve challenges from a known folder.

Webroot is better because it doesn't need to replace Nginx (to bind to port 80).

In the following, we're setting up mydomain.com. HTML is served from /var/www/mydomain, and challenges are served from /var/www/letsencrypt.

Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:

var Article = require('../../../models/article');

Those suck for maintenance and they're ugly.

	/**
	* Converts the value passed to a BigNumber instance
	* @param {*} value - A number representation
	* @param {boolean} [force=true] - If set to false will return 'undefined' when value is not a number or a string
	* representation of a number.
	* @returns {BigNumber\|undefined}
	*/
	export const toBigNumber = (value, force = true) => {
	BigNumber.set({ DECIMAL_PLACES: 18 })

	'use strict';
	/* global __base */

	let winston = require('winston'),
	path = require('path'),
	utils = require(__base + 'app/helpers/utils'),
	util = require('util');

	//winston logging for papertrail
	require('winston-papertrail').Papertrail;

	import { Injectable } from "@angular/core";
	import { ReplaySubject, Observable } from "rxjs/Rx";

	interface Message {
	channel: string;
	data: any;
	}

	@Injectable()
	export class MessageBus {

	// Definition
	const EventEmitter = require('events');
	const emitter = new EventEmitter();

	emitter.on('uncaughtException', function (err) {
	console.error(err);
	});

	module.exports = emitter;

Mariano Aguero mariano-aguero

How to setup Let's Encrypt for Nginx on Ubuntu 16.04 (including IPv6, HTTP/2 and A+ SLL rating)

Better local require() paths for Node.js

Problem

Possible solutions