Angular is a powerful framework for building web applications.
Keeping your Angular projects updated to the latest version ensures you can take advantage of new features, performance improvements, and security updates.
Steps to Upgrade Angular Version:
1. Check Current Version and Dependencies
Before starting the upgrade process, it’s crucial to know your current Angular version and the dependencies in your project.
(i) Open your project directory.
Run the following command to check your current Angular version:
ng version
2. Update Angular CLI and Angular Core
The Angular CLI (Command Line Interface) is a vital tool for managing your Angular projects. Start by updating the Angular CLI globally:
(i) Run the following command to uninstall the current Angular CLI:
npm uninstall -g @angular/cli
(ii) Install the latest Angular CLI:
npm install -g @angular/cli@latest
(iii) Update the local Angular CLI in your project:
ng update @angular/cli
If there are any optional updates, Angular will suggest them. Follow the instructions provided by the Angular CLI.
3. Handle Third-Party Dependencies
Third-party dependencies may need updates to be compatible with Angular 18. Check for any outdated packages:
(i) Run the following command to see outdated packages:
npm outdated
(ii) Update the outdated packages:
npm update
Some packages may require manual intervention if they have major updates or breaking changes.
Check the documentation for each package for specific update instructions.
4. pdate TypeScript Version
Angular 18 may require a specific TypeScript version. Ensure you have the correct TypeScript version installed:
(i) Check the Angular documentation for the required TypeScript version.
(ii) Update TypeScript to the required version:
npm install typescript@<required_version>
5. Fix Breaking Changes and Deprecations
After updating, there might be breaking changes or deprecations that you need to address. The Angular CLI provides tools to help identify and fix these issues:
(i) Run the following command to identify potential issues:
ng lint
(ii) Fix the issues listed. Refer to the Angular update guide and documentation for solutions to common breaking changes.
6. Test Your Application
After completing the updates, thoroughly test your application to ensure everything is working correctly:
(i) Run unit tests:
ng test
(ii) Run end-to-end tests:
ng e2e
(iii) Manually test critical parts of your application to verify that all functionalities are intact.
7. Update Documentation and Dependencies
Finally, update any internal documentation to reflect the changes made during the upgrade process. Also, update your package.json to ensure future developers know which versions are in use.
