Step 1: Prepare Your Project for Upgrade
Upgrading your Angular application from an older version to the latest can be a daunting task, but with the right approach, you can navigate through the process smoothly. In this step-by-step guide, we’ll walk you through the process of upgrading an Angular 10 application to the latest version 18.
Before we dive into the upgrade process, it’s important to ensure your project is ready. First, clone the project to your local machine so you can work on it directly. Once the project is cloned, run npm install to install the current dependencies and ensure the application is running correctly.
Step 2: Review the Angular Upgrade Guide
Angular provides an official upgrade guide that outlines the steps required to migrate your application to a newer version. Visit the Angular Update Guide and select the version you’re currently using (in this case, version 10) and the version you want to upgrade to (the latest version 18).
The guide will provide you with a detailed list of steps to follow, including any breaking changes or deprecations you need to address. Review the guide carefully and make note of any specific instructions or considerations for your application.
Step 3: Install the Angular CLI
To perform the upgrade, you’ll need to have the latest version of the Angular CLI installed. Run the following command to install the CLI:
npm install -g @angular/cli
This will ensure you have the necessary tools to execute the upgrade process.
Step 4: Upgrade to Angular 11
The first step in the upgrade process is to move your application from version 10 to version 11. Follow the instructions provided in the upgrade guide, which may include updating dependencies, modifying configuration files, and addressing any breaking changes.
Once you’ve completed the migration to version 11, commit the changes and move on to the next step.
Step 5: Upgrade to Angular 12, 13, 14, 15, 16, 17, and 18
Repeat the upgrade process for each subsequent version, following the steps outlined in the upgrade guide. Be sure to commit your changes after each successful migration to keep your project history organized.
During this process, you may encounter some challenges, such as compatibility issues with dependencies or breaking changes in the Angular framework. Don’t get discouraged! Refer back to the upgrade guide and use online resources to troubleshoot any issues you encounter.
Step 6: Update Dependencies
After upgrading your Angular application to version 18, you may need to update any additional dependencies, such as TypeScript or Ionic. Review the upgrade guide and your project’s dependencies to ensure everything is up-to-date and compatible with the new Angular version.
Step 7: Test and Validate
Once you’ve completed all the upgrade steps, it’s time to thoroughly test your application. Run the application locally and ensure all functionality is working as expected. Check for any visual regressions or unexpected behavior, and address any issues you find.
If you’re using any external services or APIs, be sure to test those integrations as well to ensure they’re still working correctly with the upgraded Angular application.
Step 8: Deploy and Celebrate
After successfully upgrading your Angular application and thoroughly testing it, it’s time to deploy your updated app. Follow your usual deployment process and celebrate your accomplishment!
Upgrading an Angular application can be a complex and time-consuming process, but by following this step-by-step guide and the official Angular upgrade documentation, you can navigate the upgrade journey with confidence. Remember to take it one step at a time, address any issues as they arise, and thoroughly test your application before deployment.
If you have any questions or need further assistance, don’t hesitate to reach out to the Angular community or explore resources like the Nerdic Coder Academy for more in-depth guidance on Angular development and best practices.
Hope you enjoyed and until next time stay nerdic!
The Nerdic Coder 
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