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Installapalooza Step 1.1: Node.js & Express Stack

Most of the coding work we do at Learners Guild will be driven by the back-end web development framework Express. We'll install Express individually in each project we create. For now, we'll install the other tools we'll use along with Express.

Plan Overview

  1. Install Node.js, a platform for back-end web development with the JavaScript programming language.
  2. Install PostgreSQL, the database we'll use with our Node.js and Express stack.

Node.js

Note: when copying the code snippets, please exclude the $ as you paste and run the code into your terminal. The dollar sign $ is simply an indicator of the logged-in user's terminal prompt in the examples.

  1. Install Node.js with Homebrew by running the following command in the Terminal:
$ brew install node

  1. Run the Terminal command node -v to check that Node.js was installed. It should print a version number greater than or equal to "v5.8.0". The Terminal command node changes your Terminal into a Javascript REPL ("Read Evaluate Print Loop"), like the right-hand side of repl.it. Use the shortcut ctrl + c, or type .exit to quit out of the REPL and return to the normal Terminal prompt.

  2. Run the Terminal command which npm to check that NPM is installed. The Node Package Manager, used through various npm commands, is a lot like Homebrew, except we'll use it for Node.js-specific tools instead of for general Mac tools. NPM packages are often called "node modules."

Nodemon

Nodemon (short for "node monitor") will make our Node.js workflow more efficient.

  1. Install nodemon globally with the following Terminal command:
$  npm install -g nodemon

PostgreSQL

Postgres

  1. Install postgres via Homebrew
$ brew install postgres
  1. Configure postgres to start when the system does.
$ mkdir -p ~/Library/LaunchAgents

$ ln -sfv /usr/local/opt/postgresql/*.plist ~/Library/LaunchAgents

  1. Check that your install worked

    $ which psql

    If it worked, you should see /usr/local/bin/psql as the terminal output.

Next Up

  • Set up your Node.js environment
  • Install Development Tools