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I'm developing an npm package with Angular. While building the lib, I get the following error:

Unsupported private class MyLibComponent. This class is visible to consumers via MyLibModule -> MyLibComponent, but is not exported from the top-level library entrypoint.

I found this question. This explains how I fix it, but not why I need to put all components in the barrel file as the Angular documentation for NgModules says:

Exported declarations are the module's public API.

Can someone explain this to me?

Hugo B.
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1 Answers1

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Please make sure that the component has been exported to your public-api.ts as:

export * from './lib/my-lib/my-lib.component';

and export the component from your library module, too.

Jeremy Caney
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Goutam Basak
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