node.js allows you to run javascript in the Terminal as appose to a regular browser which makes for a modern workflow in web development, with node.js installed an associated package called npm (Node Package Manager) is also installed which can manage other applications that utilize node.js, one of the main ones being grunt.js. OSX Yosemite 10.10 guide here.

A QR-code based, Google Cloud Function hosted, Slack integrated Door bell! Use /etc/paths.d/ directory via the pathhelper tool to generate the PATH variable for all user accounts on the system. This method only works on OS X Leopard and higher. It will display the installed Node.js version. Npm -v Step 6 − In the command prompt, enter the following command to install Gulp. Adding “-g” flag ensures that the Gulp is globally available for any project. Npm install gulp -g Step 7 − To verify that Gulp has been installed successfully, enter the following command to display the Gulp.

To install node.js on OSX 10.9 Mavericks you can download a pre-compiled binary package which makes a nice and easy installation. Head over to http://nodejs.org/ and click the install button to download the latest package.

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Install the package by following along which will install node and npm, npm is Node Package Manager which facilitates installs of additional packages for node.js.

At the end of the install you are prompted to make sure that /usr/local/bin is in your path, double check you have it by running in the Terminal:

After install check it was ok by entering in the command line node which will open a node javascript session:

To exit the node.js session just hit ‘control’ + ‘c’ twice.

If you have an earlier version of node you can just download the latest version and install to upgrade it and it will overight the previous version.

Installing Packages for Node

There are many packages for Node such as the popular grunt.js, you use the command npm to see a complete list run:

This will return an exhaustive list of available packages, to install a package run npm install

To list installed packages run

To upgrade npm packages

To upgrade node.js itself on OSX just download and install the latest from node.org

The course links you to the official Getting Started docs here. I will walk you through it.

Note: When running npm commands on the terminal on a Mac, you may start getting permissions errors which require you to precede your commands with sudo sudo npm install --global gulp-cli for example. This is one way to do it. Many people are uncomfortable with this, for one reason or another (there are a ton of blog posts about it). I recommend checking out this StackOverflow post which gives you a few options to fix this..

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Installing Gulp Step by Step

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• Check for Node and npm

  • In the terminal type node --version

    This checks which version of Node you have installed. 'Node is an open-source, cross-platform JavaScript run-time environment that executes JavaScript code server-side.' Wikipedia. In our case this just means that it can run some really cool and helpful tools for us.

  • In the terminal type npm --version

    Same as above, only this is npm - node package manager. So Node has all these cool tools, but it can be a pain to keep track of them, update them, run them, organize them, etc. Npm gives us a way to handle all of that.

• Install the gulp command

  In the terminal type npm install --global gulp-cli

  Ok, let's break this one down.

  We are using npm, the package manager, to install.

  We are installing it globally (--global), that means it will be available on our whole computer, not just in our project folder.

  Now, note that it says we are installing the gulp command. We are installing this so that we can run gulp on our command line or terminal.

  Look at the end of this line of code, it doesn't just say 'gulp', it says 'gulp-cli'. CLI usually stands for Command Line Interface. So we are installing an interface with gulp on the command line.

• Create a package.json file

  You have multiple ways of doing this.

  • My preffered way: In the terminal, in the root of project's directory, type npm init It will ask you some questions, for now, you can just hit enter on each one. The defaults will work fine for you.
  • Via the terminal with no set-up: just type touch package.json
  • In your code editor, simply make a file called package.json
• Install gulp in your devDependencies

  If you wish to be able to follow along with the videos and not make any modifications, use this code for this: npm install --save-dev gulp

  Projects can have dependencies (things that they rely on in order to work) in various 'stages' of the project. This is usually divided into production, development, and testing. With --save-dev, we are telling npm that our project is dependent on gulp, but only while it is in development. The project will not need Gulp to run once it is online, thus having it there would be wasteful.

  The gulp@next tells npm to install a higher version. Currently installing gulp installs version 3.9.1. Installing gulp@next installs version 4.0.0

  npm install --save-dev gulp@next