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Handling Errors

Express.js makes it a breeze to handle errors in your routes.

Express lets you centralizes your error-handling through middleware.

Let's look at patterns for how to get the most out of your error-handling.

First, our error-handling middleware looks like this:

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Build docker image

$ cd /path/to/Dockerfile
$ sudo docker build .

View running processes

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Knex Setup Guide

Create your project directory

Create and initialize your a directory for your Express application.

$ mkdir node-knex-demo
$ cd node-knex-demo
$ npm init

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Example Node Server w/ Babel

Getting Started

First we'll install babel-cli.

$ npm install --save-dev babel-cli

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Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

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Pry Cheat Sheet

• Youtube Tutorial 2013

Command Line

• pry -r ./config/app_init_file.rb - load your app into a pry session (look at the file loaded by config.ru)
• pry -r ./config/environment.rb - load your rails into a pry session

Debugger

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require 'rails_helper'

RSpec.describe TodosController, :type => :controller do

  describe "GET #index" do
  #describe "POST #create" do
  #describe "GET #show" do
  #describe "PATCH #update" do (or PUT #update)
  #describe "DELETE #destroy" do
  #describe "GET #new" do

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The Ultimate Unit Testing Cheat-sheet

For Mocha, Chai and Sinon

using mocha/chai/sinon for node.js unit-tests? check out my utility: mocha-stirrer to easily reuse test components and mock require dependencies

---

• Sinon Chai
• Chai
• Sinon
• Mocha

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node1:
    image: hauptmedia/mariadb:10.1
    hostname: node1
    ports:
      - 13306:3306
    environment:
      - MYSQL_ROOT_PASSWORD=test
      - REPLICATION_PASSWORD=test
      - MYSQL_DATABASE=maria
      - MYSQL_USER=maria

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Keybase proof

I hereby claim:

• I am drpep on github.
• I am drpep (https://keybase.io/drpep) on keybase.
• I have a public key ASDCjdz-oiNPl_BWrdrPUBqcUizvJgAjn19R-kdpd3pLoAo

To claim this, I am signing this object: