hugosp

var express = require('express');
var expressWs = require('express-ws');
var expressWs = expressWs(express());
var app = expressWs.app;

app.use(express.static('public'));

var aWss = expressWs.getWss('/');

app.ws('/', function(ws, req) {

jesgs

From: https://www.jesgs.com/blog/2017/12/18/deploying-from-github-to-vps-using-travis-ci

Recently, I spent around 14 to 16 hours learning all of the necessary steps to getting an existing repo set up with Travis CI to run unit tests, and then once successful, connect to a remote server that isn't a PaaS (in this case, Linode) and then proceeds to use Git hooks to do post deployment things.

Starting with your local machine and you have your project already checked out from Github.

Setting Up

• Assuming you have Ruby (at least 2.3.1) installed, run gem install travis. This installs the Travis CI command-line tools. We're going to use these tools to encrypt RSA keys that Travis will use to connect to your remote server.
• This tutorial also assumes that you have a working repo and a Travis-CI account set up.

kolosovsky

The computation of the axis-aligned bounding box (AABB) in JavaScript

Polygon (rectangle, triangle, etc.)

Live demo https://jsfiddle.net/Kolosovsky/tdqv6pk2/

let points = [
	{ x: 125, y: 50 },
	{ x: 250, y: 65 },

paulfranco

Interview Questions

Node.js

Q1: What do you mean by Asynchronous API? ☆☆

Answer: All APIs of Node.js library are aynchronous that is non-blocking. It essentially means a Node.js based server never waits for a API to return data. Server moves to next API after calling it and a notification mechanism of Events of Node.js helps server to get response from the previous API call.

Source: tutorialspoint.com

joepie91

ES Modules are terrible, actually

This post was adapted from an earlier Twitter thread.

It's incredible how many collective developer hours have been wasted on pushing through the turd that is ES Modules (often mistakenly called "ES6 Modules"). Causing a big ecosystem divide and massive tooling support issues, for... well, no reason, really. There are no actual advantages to it. At all.

It looks shiny and new and some libraries use it in their documentation without any explanation, so people assume that it's the new thing that must be used. And then I end up having to explain to them why, unlike CommonJS, it doesn't actually work everywhere yet, and may never do so. For example, you can't import ESM modules from a CommonJS file! (Update: I've released a module that works around this issue.)

And then there's Rollup, which apparently requires ESM to be u

valentijnnieman

#!/usr/bin/env ruby
#
# JavaScript Soundfont Builder for MIDI.js
# Author: 0xFE <mohit@muthanna.com>
# edited by Valentijn Nieman <valentijnnieman@gmail.com>
#
# Requires:
#
#   FluidSynth
#   Lame

Guseyn

#!/usr/bin/env ruby
#
# JavaScript Soundfont Builder for MIDI.js
# Author: 0xFE <mohit@muthanna.com>
# edited by Valentijn Nieman <valentijnnieman@gmail.com>
#
# Requires:
#
#   FluidSynth
#   Lame