Exercise 1: Changing versions of npm

Learning Objectives

• reliably switch between versions of npm
• compare and contrast npm2 and npm3

Prerequisites

• you should have Node.js >= v4 installed
• you should have npm v3 installed

• (optional) install tree OS X, Linux

  Note: On Linux and OSX machines you can use tree to view the directory structure.

Instructions

1. Assuming you followed previous sections, you should currently be using npm3. Switch to npm2.

2. Create a Exercise1 directory (mkdir Exercise1), and then cd into that directory and create 2 directories, npm2 and npm3.

3. Change into the npm2 directory. Run these commands:

    npm install mod-a@1.0
    npm install mod-b@1.0
   

4. View the node_modules directory.

5. Change intro the npm3 directory. Switch to npm3.

6. Run the same commands as listed in Step #3.

7. Compare and contrast the npm3/node_modules directory with the npm2/node_modules directory. Note the differences.