Angular 4: no component factory found,did you add it to @NgModule.entryComponents?

Angular 4: No Component Factory Found. Did You Add It to @NgModule.entryComponents?

So you're using Angular 4 with webpack, and you've encountered the following error when trying to use a component:

No component factory found for ConfirmComponent. Did you add it to @NgModule.entryComponents?

Fear not! You're in the right place to find a solution to this common issue. Let's dive right in!

Understanding the Problem

The error message you're seeing suggests that Angular couldn't find the factory for the ConfirmComponent you're trying to use. This usually happens when the component is not properly declared in the @NgModule metadata.

Finding the Solution

To fix this error, you need to make sure that you have correctly added the ConfirmComponent to the entryComponents array in your module file (app.module.server.ts in your case).

Here's an example of how it should look:

@NgModule({
  bootstrap: [ AppComponent ],
  imports: [
    // ...
  ],
  entryComponents: [
    ConfirmComponent,
  ],
})
export class AppModule { }

By adding the ConfirmComponent to the entryComponents array, you're informing Angular to dynamically generate a factory for this component, allowing it to be created at runtime.

Additional Considerations

It's worth noting that if you have other module files like app.module.browser.ts or app.module.shared.ts, you'll want to ensure that the ConfirmComponent is also properly declared in those files if it is being used outside of the app.module.server.ts.

Wrapping Up

You've successfully resolved the "No component factory found" error in Angular 4. By adding the ConfirmComponent to the entryComponents array in your app.module.server.ts, you have provided Angular with the necessary information to generate factories for dynamically created components.

Now you can go ahead and use the ConfirmComponent in your app without any issues. Enjoy building awesome things with Angular 4!

If you found this guide helpful, don't forget to share it with others who might be facing the same problem. And if you have any questions or suggestions, feel free to leave a comment below. Happy coding! 💻🚀