Using ng-metadata (Angular 1.x Using >= 2 Style)

The ng-metadata approach is done with Angular 1.x dependencies and a few small helper libraries. ng-metadata allows developers to use Angular 2 style TypeScript (annotations/decorators) without Angular 2. Unfortunately templates are still mostly in Angular 1.x style.

Once an application is converted to ng-metadata style it is very close to Angular 2, but still requires refactoring. In most cases, ng-metadata is not as efficient as ng-upgrade with respect to refactoring time. The payload of an ng-metadata application is smaller, and porting to ng-metadata can be done in an even more ad-hoc fashion than with ng-upgrade.

The general flow of using ng-metadata with an application is:

  • Install ng-metadata dependencies
  • Bootstrap root component
  • Upgrade components strategically
  • Refactor the codebase to Angular 2

ng-metadata is favored over the deprecated ng-forward.

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