**Course Title:** Build and Package Management in Modern Development **Section Title:** Managing Dependencies with NPM/Yarn **Topic:** Create a Node.js project and manage dependencies with npm or Yarn.(Lab topic) **Objective:** By the end of this lab, you will be able to create a new Node.js project, initialize it with npm or Yarn, and manage dependencies using package.json and either npm or Yarn. **Step 1: Creating a New Node.js Project** To start, create a new directory for your project and navigate into it in your terminal or command prompt. You can do this using the following commands: ```bash mkdir my-node-project cd my-node-project ``` Here, "my-node-project" is the name of your project. You can replace this with any name you like. **Step 2: Initializing a New npm Project** To initialize a new npm project, run the following command: ```bash npm init ``` This command will prompt you to provide some information about your project, such as the project name, version, description, and author. You can either provide this information manually or accept the defaults by pressing enter. Once you've completed the initialization process, you'll have a new file called `package.json` in your project directory. This file contains metadata about your project and will be used to manage dependencies. **Alternative: Initializing a New Yarn Project** If you prefer to use Yarn instead of npm, you can initialize a new Yarn project using the following command: ```bash yarn init ``` This command will prompt you to provide similar information to npm, and will also create a `package.json` file in your project directory. **Step 3: Installing Dependencies** Next, let's install some dependencies for our project. For this example, we'll install the `express` framework. To install express using npm, run the following command: ```bash npm install express ``` To install express using Yarn, run the following command: ```bash yarn add express ``` Either command will install express and update your `package.json` file to reflect the new dependency. **Step 4: Managing Dependencies** Now that we have a dependency installed, let's take a closer look at how to manage dependencies with npm or Yarn. To list all dependencies installed in your project, use the following command: ```bash npm ls ``` or ```bash yarn list ``` To update a dependency to the latest version, use the following command: ```bash npm update [package-name] ``` or ```bash yarn upgrade [package-name] ``` Here, `[package-name]` is the name of the package you want to update. **Conclusion:** In this lab, you learned how to create a new Node.js project and manage dependencies using npm or Yarn. You initialized a new project with `package.json`, installed dependencies, and learned how to manage dependencies. **Practice Exercise:** * Create a new Node.js project and initialize it with npm or Yarn. * Install the `express` framework and any other dependencies you think you might need for a web application. * Use `npm ls` or `yarn list` to list all dependencies installed in your project. * Update the `express` package to the latest version using `npm update` or `yarn upgrade`. **External Resources:** * Official npm documentation: https://docs.npmjs.com/ * Official Yarn documentation: https://yarnpkg.com/en/docs * More information about `package.json`: https://docs.npmjs.com/files/package.json **Comments/Ask for Help:** If you have any questions or need help with any of the steps in this lab, please feel free to comment below.