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Angular 16: Trouble with Lazy Loaded Module Not Recognizing Service Instance in Parent Component

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angular lazy-loading dependency-injection TypeScript

I'm confused about I'm facing an issue with a lazy-loaded module in my Angular 16 application..... I have a parent component that injects a service, which is supposed to be shared with all child components. However, when I navigate to the lazy-loaded module, the child components seem to be getting a new instance of the service instead of the instance provided by the parent component. Here's a simplified version of what I'm doing: In my parent module, I have: ```typescript @NgModule({ imports: [CommonModule], providers: [MySharedService], // Providing the service at the parent level declarations: [ParentComponent], }) export class ParentModule {} ``` In my parent component, I'm injecting the service like this: ```typescript export class ParentComponent { constructor(private mySharedService: MySharedService) {} } ``` In my lazy-loaded module, I have: ```typescript @NgModule({ imports: [CommonModule], declarations: [ChildComponent], }) export class ChildModule {} ``` The child component tries to access the service like this: ```typescript export class ChildComponent { constructor(private mySharedService: MySharedService) { console.log(this.mySharedService.getData()); // This returns undefined } } ``` When I call `getData()` in the child component, it returns `undefined`, which indicates that it's not recognizing the instance from the parent service. I've tried moving the service provider to the `ChildModule`, but then I get multiple instances leading to data inconsistency. I’ve checked the Angular documentation on module scoping and service instances, but I still can’t figure out how to get the child components to use the service instance from the parent. Am I missing something in how I’ve structured my modules or services? Any help would be greatly appreciated! Is there a better approach? I'm coming from a different tech stack and learning Typescript. Any pointers in the right direction? This is happening in both development and production on CentOS. How would you solve this?