Angular multiple application into one application

 Combining multiple Angular applications into one application is often referred to as a "multi-application" setup. In this approach, each Angular application operates as a separate module within a single parent application. This allows you to have distinct functionality or features separated into different parts of your application while sharing common resources like styles, services, and libraries. Here's how you can set up a multi-application Angular project:

1. **Create a New Angular Workspace**:

   Start by creating a new Angular workspace. The Angular CLI provides a convenient way to set up a workspace that can contain multiple applications.

ng new multi-app-workspace --createApplication=false

   This command creates a workspace without an initial application.

2. **Generate Multiple Applications**:

   Create as many Angular applications as you need within the workspace. You can use the Angular CLI to generate new applications.

ng generate application app1
   ng generate application app2
   # Create as many applications as needed
   

   This will generate the necessary files and configurations for each application within the workspace.

3. **Shared Resources**:

   Inside your workspace, you can create a shared folder for resources that multiple applications will use. This can include shared styles, common services, libraries, and assets. Place these shared resources in the `src` folder.

4. **Configure Application Routing**:

   Each Angular application within your workspace should have its routing configuration. Define the routes and components specific to each application.

5. **Container Application**:

   Create a container application that serves as the parent application responsible for loading and managing the child applications. This container application can be another Angular application or a simple HTML file that serves as the host for the child applications.

6. **Loading Child Applications**:

   To load child applications dynamically, you can use Angular's `Router` module along with lazy loading. Configure the router in your container application to load child applications based on the desired routes.

const routes: Routes = [
   { path: 'app1', loadChildren: () => import('./app1/app1.module').then(m => m.App1Module) },
   { path: 'app2', loadChildren: () => import('./app2/app2.module').then(m => m.App2Module) },
   // Define routes for all your child applications
 ];
 

7. **Integration in the Container Application**:

   In your container application's templates or HTML file, use Angular's `<router-outlet>` to load the child applications based on the current route.

<router-outlet></router-outlet>

8. **Testing and Deployment**:

   Test each child application independently and ensure that the container application can load and route to them correctly. Deploy the container application, and when a user accesses a specific route, it will load the corresponding child application.

9. **Shared Services and Communication**:

   If necessary, you can create shared services in the shared resources folder to facilitate communication and data sharing between child applications and the container application.

10. **Styling**:

   Consider styling your child applications to have a consistent look and feel by sharing stylesheets and theming between them.

11. **Error Handling**:

   Implement error handling strategies to gracefully handle any issues that may arise when loading or interacting with child applications.

Remember that this setup allows you to have multiple Angular applications under one workspace, and they can share common resources while remaining independent in terms of functionality and routing. The exact structure and organization may vary based on your project's requirements and complexity.