Angular Upgrade 7 to 8: A Step-by-Step Guide to a Seamless Transition

Are you ready to take your Angular application to the next level? Upgrading from Angular 7 to Angular 8 can seem like a daunting task, but fear not! In this comprehensive guide, we’ll walk you through the process, providing clear instructions and explanations to ensure a seamless transition.

Why Upgrade to Angular 8?

Before we dive into the upgrade process, let’s talk about the benefits of upgrading to Angular 8. This latest version brings a host of exciting features, including:

• Improved performance and efficiency
• Better support for Ivy, the new rendering engine
• Enhanced TypeScript support
• New features forForms, Animations, and more

With these improvements, you’ll be able to build faster, more efficient, and more scalable applications. So, what are you waiting for? Let’s get started!

Prepare for the Upgrade

Before you begin, make sure you have the following:

• A working Angular 7 project
• A compatible version of Node.js (minimum 10.13.0)
• A compatible version of npm (minimum 6.4.1)
• The Angular CLI installed globally (minimum 7.3.0)

Now, let’s take a deep breath and dive into the upgrade process!

Step 1: Update the Angular CLI

Open your terminal and run the following command to update the Angular CLI:

npm install @angular/cli@8

This will ensure you have the latest version of the Angular CLI, which is required for the upgrade process.

Step 2: Update the Angular Core

Next, run the following command to update the Angular core:

ng update @angular/core@8 @angular/common@8

This command will update the Angular core and common modules to version 8.

Step 3: Update Other Dependencies

In this step, we’ll update other dependencies, including:

• ROUTER: ng update @angular/router@8
• FORMS: ng update @angular/forms@8
• HTTP: ng update @angular/common/http@8
• MATERIAL (if using): ng update @angular/material@8

Run each command separately, and make sure to follow the prompts to update each dependency.

Step 4: Update TypeScript

Angular 8 requires TypeScript 3.4 or higher. Run the following command to update TypeScript:

npm install typescript@3.4

This will ensure you have the compatible version of TypeScript.

Step 5: Update RxJS

RxJS is a dependency of Angular, and it needs to be updated to version 6.5 or higher. Run the following command:

npm install rxjs@6.5

This will update RxJS to the compatible version.

Step 6: Review and Update Your Code

Now that the dependencies are updated, it’s time to review and update your code. Angular 8 introduces some breaking changes, so make sure to check the following:

• The BrowserModule has been removed; instead, use CommonModule
• The HTTPClient has been removed; instead, use HttpClient
• Forms have been updated; review your form code to ensure compatibility

Make the necessary changes to your code to ensure it’s compatible with Angular 8.

Step 7: Verify the Upgrade

Finally, run the following command to verify the upgrade:

ng update

This command will check for any remaining updates and provide a report on the status of your project.

Troubleshooting Common Issues

During the upgrade process, you may encounter some common issues. Here are some troubleshooting tips:

Issue	Solution
Error:Cannot find module ‘typescript’	Run npm install typescript@3.4 and try again
Error:Cannot find module ‘rxjs’	Run npm install rxjs@6.5 and try again
Error: compatibility issues with third-party libraries	Check the library’s documentation for Angular 8 compatibility and update accordingly

If you encounter any issues not listed here, refer to the Angular documentation or seek help from the community.

Conclusion

Congratulations! You’ve successfully upgraded your Angular 7 project to Angular 8. Take a moment to celebrate this achievement, and then get back to building amazing applications with the latest features and improvements.

Remember, upgrading to Angular 8 is a process that requires patience, attention to detail, and a willingness to learn. With this guide, you’ve taken the first step towards a seamless transition. Happy coding!

Here are the 5 Questions and Answers about “Angular upgrade 7 to 8” in HTML format:

Frequently Asked Question

Get ready to take your Angular skills to the next level! Upgrading from Angular 7 to 8 can be a breeze with these frequently asked questions.