Скачать или смотреть Resolving the Error: Type Component is part of the declarations of 2 modules in Ionic Framework

Discover how to fix the common `Error: Type Component is part of the declarations of 2 modules` in your Ionic applications by organizing your components into modules effectively.
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This video is based on the question https://stackoverflow.com/q/66678979/ asked by the user 'CoderTn' ( https://stackoverflow.com/u/8029592/ ) and on the answer https://stackoverflow.com/a/66679369/ provided by the user 'Owen Kelvin' ( https://stackoverflow.com/u/13680115/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Understanding the Problem

If you are developing an Angular application using the Ionic framework, you may encounter the error message:

"Error: Type CommunityCardAccordionComponent is part of the declarations of 2 modules: CommunityPageModule and DeleteFriendsPageModule!"

This error occurs when a component is declared in more than one module. In Angular, each component belongs to exactly one module, and declaring it in multiple modules leads to conflicts during compilation.

What causes this error?
The problem arises when you attempt to declare the same component in separate modules. The Angular framework does not allow a component to be associated with more than one module at the same time.

The Solution

The solution to this problem involves restructuring your module declarations. Here, we present a step-by-step guide to resolve this error effectively.

Step 1: Remove Component Declarations

Remove the CommunityCardAccordionComponent from both the CommunityPageModule and DeleteFriendsPageModule. This step is crucial because it will eliminate the conflict that is causing the error.

Step 2: Create a New Module

Next, you need to create a new Angular module for the CommunityCardAccordionComponent. Here’s how to do that:

Navigate to the directory where your CommunityCardAccordionComponent is located.

Create a new file called community-card-accordion.module.ts.

Add the following code to the newly created module:

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Import the New Module

Finally, you need to import the newly created CommunityCardAccordionModule into both modules where you originally needed the CommunityCardAccordionComponent. Update CommunityPageModule and DeleteFriendsPageModule to include this new module:

[[See Video to Reveal this Text or Code Snippet]]

Repeat the similar import process in CommunityPageModule.

Conclusion

By following these straightforward steps, you can resolve the error regarding declaring a component in multiple modules. The essence of the solution is to consolidate your component in a dedicated module and import this module where necessary.

Now you can develop your Ionic applications confidently, knowing that you have addressed the component declaration issue effectively. Happy coding!