Migration process

AngularJS and Angular differ syntactically and conceptually. So the migration process involves code change not only on a syntactical level but also in implementation. The Angular team made the life of the developers easier by providing built-in tools in Angular for migrating AngularJS applications to Angular. There is some preliminary process to do in our existing AngularJS applications before starting up the migration process.

The preliminary process involves decoupling the existing code and making the existing code maintainable. This preliminary process not only prepares the code for upgradation, but will also improve the performance of the existing AngularJS applications.

We can follow an incremental approach by running both AngularJS and Angular in the same application and initiate the migration process one by one starting from the components. This approach helps to migrate large applications, isolating the business from any impact and completing the upgradation over a period of time. This approach can be achieved using the Angular upgrade module.