Upgrading from Angular 5 to Angular 6: The Journey of Migration

I have been following an Angular migration tutorial to upgrade from Angular 5 to 6.

https://update.angular.io/

Upon completing the migration process and attempting to run the application using ng serve, I encountered an error.

The format of the Angular CLI configuration has changed, and your existing configuration can be automatically updated by running the command: ng update @angular/cli

Despite following the recommended steps, the issue persists.

Angular CLI 6+ now uses angular.json instead of angular-cli.json. Shouldn't this have been updated during the package update?

According to a conversation on their GitHub repository, using ng update should automatically update the file structure, but this hasn't happened in my case.

https://github.com/angular/angular/issues/23443

Answer №1

After discovering a solution to this problem and noticing no one else had shared it, I decided to post it here in case it can benefit someone else.

The issue stemmed from the json file, so by eliminating the .angular-cli.json file and substituting it with the json file from a newly created angular 6 app, followed by running npm install, the problem was resolved.

To summarize the steps: 1. Remove .angular-cli.json 2. Generate a new angular 6 app and utilize its angular.json 3. Execute npm install

This method is merely a temporary fix, as I expect direct migration to function properly under normal circumstances.

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