Type Y is part of the declarations of 2 modules - Angular 2

Question

I want to include a shared component "SimpleRadialChartComponent" in two separate modules in my angular 2 application. When I pass this component in declarations area in each module, I took this error:

Type SimpleRadialChartComponent is part of the declarations of 2 modules

How can declare a shared component in two different modules?

Answer 1

Good pracitice is creating "shared" module for components, model objects, etc using in two or more modules.

All the guidelines and good practices you will find in official documentation .

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Detailed description of your problem, you can find here :

If you want to use a component across multiple modules, you'll need to create a "shared" module and add that component the shared module's exports. Then you add that shared module into your other modules imports.