Can you explain the purpose of hostDirectives in Angular 2? (the directive composition API)

According to the angular documentation:

The directive composition API allows for the application of directives to a component's host element directly from within the component's TypeScript class.

What benefits does applying the directive from within the component class offer compared to applying it in the template? Is it primarily for composing multiple directives together?

Answer №1

Utilizing host directives is incredibly beneficial when you want your component to always have the directive attached.

In the past, you would have to consistently perform that task each time you added the component to a template!

Another fantastic aspect is that you can now effortlessly add a directive to a lazily loaded component without needing to encase it within another component.

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