error NG6001: Cannot declare 'ReactiveFormsModule' in an NgModule as it's not a part of the current compilation. code example

Example: angluar cannot declare '' in an ngmodule as its not part of the current compilation

// Remove your module from declarations and add it to imports

@NgModule({
  declarations: [
    SomeComponent,
    // SharedModule, <-- remove module from declarations
  ],
  imports: [
    SharedModule, // <-- add to imports
  ],
})
export class YourModule {}