What is entryComponents in angular ngModule?

Question

I am working on an Ionic app ( 2.0.0-rc0 ) which depends on angular 2 . So the new introduction of ngModules is included.

Answer 1

As of Angular 9 entryComponents is no longer required thanks to Ivy allowing this feature to be deprecated and so can be removed from module declarations.

Deprecated APIs and features - entryComponents and ANALYZE_FOR_ENTRY_COMPONENTS no longer required

Previously, the entryComponents array in the NgModule definition was used to tell the compiler which components would be created and inserted dynamically. With Ivy, this isn't a requirement anymore and the entryComponents array can be removed from existing module declarations. The same applies to the ANALYZE_FOR_ENTRY_COMPONENTS injection token.

Angular Ivy

Ivy is the code name for Angular's next-generation compilation and rendering pipeline. With the version 9 release of Angular, the new compiler and runtime instructions are used by default instead of the older compiler and runtime, known as View Engine.