angular-migration

The Angular Migration skill provides a comprehensive toolkit for developers transitioning legacy AngularJS (1.x) applications to modern Angular (2+). It addresses the complexity of phased upgrades, ensuring code integrity during the transformation from older architectural patterns to reactive, component-based structures. This skill is essential for architects and developers planning to modernize large-scale enterprise applications while maintaining continuous delivery and stability.

• Incremental Migration Support: Provides strategies for Hybrid mode using ngUpgrade, allowing both AngularJS and Angular to coexist within the same DOM and runtime.

• Component & Directive Conversion: Automates the logic for migrating legacy controllers to TypeScript-based components and standardizing directives into Angular components.

• Dependency Injection Refactoring: Offers patterns for downgrading Angular services for AngularJS consumption and upgrading AngularJS services for Angular injection using InjectionTokens.

• Routing & Service Migration: Guides the migration of legacy routing systems and service factories to modern Angular Router and @Injectable-based patterns.

• Vertical & Horizontal Slicing: Facilitates different migration intensities, from Big Bang rewrites for smaller projects to feature-by-feature incremental migration for mission-critical apps.

• Designed for developers working with Angular 1.x through latest Angular versions.

• Recommended for use in brownfield projects requiring long-term modernization without downtime.

• Supports manual bootstrapping setup for hybrid apps, including managing the platformBrowserDynamic and UpgradeModule lifecycle.

• Facilitates transition from $scope-based programming to RxJS-based observable patterns and modern TypeScript practices.

• Assists in complex refactoring tasks such as moving from $http to HttpClient and updating template syntax.