How would you update Angular 6 to Angular 7?

To update an Angular 6 project to Angular 7, you would typically follow these steps:

1. Update Angular CLI: Ensure you have the latest version of Angular CLI installed globally on your system by running the following command:
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   npm install -g @angular/cli

2. Update Angular Core Packages: Update the Angular core packages in your project’s package.json file to the latest versions compatible with Angular 7. You can do this manually or use the ng update command provided by Angular CLI:
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   ng update @angular/core @angular/cli

3. Update RxJS: Angular 7 requires a newer version of RxJS. Update RxJS to version 6.3 or higher:
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   npm install rxjs@^6.3.3

4. Update Angular Material and CDK (if applicable): If your project uses Angular Material or Angular CDK, update them to the compatible versions with Angular 7:
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   ng update @angular/material @angular/cdk

5. Update Dependencies: Check if any other dependencies in your package.json need to be updated to versions compatible with Angular 7. Update them accordingly.
6. Run Update Schematic: Angular CLI provides update schematics that help automate the update process. You can run these schematics to update your project’s code to be compatible with Angular 7:
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   ng update @angular/cli --migrate-only --from=6 --to=7

7. Resolve any Update Errors: During the update process, you may encounter errors related to deprecated APIs, breaking changes, or compatibility issues. Address these errors by following the provided guidance, typically available in the Angular documentation or release notes.
8. Test: After updating, thoroughly test your application to ensure all features and functionalities are working as expected. Pay special attention to any areas that might have been affected by the update.

By following these steps, you should be able to successfully update an Angular 6 project to Angular 7.