Angular Module and Component Imports

Angular applications rely heavily on modularity and reusability. A core aspect of this is correctly importing modules and components to ensure they are available and function as expected within your application. This challenge will test your understanding of Angular's import system, focusing on both module and component imports within a simple application structure.

Problem Description

You are tasked with creating a basic Angular application with two components: AppComponent and MyComponent. AppComponent should display a title and include MyComponent within its template. You need to correctly import both the MyComponent and the FormsModule (for demonstration purposes, though not directly used in the component logic) into the AppModule and then declare MyComponent within the AppModule. Failure to import or declare correctly will result in errors during compilation or runtime.

Key Requirements:

• Create an AppModule that imports BrowserModule, FormsModule, and MyComponent.
• Declare MyComponent within the AppModule.
• Create a MyComponent with a simple template displaying the text "Hello from MyComponent!".
• Within AppComponent's template, display the text "Angular App" as the title and include MyComponent.

Expected Behavior:

When the application runs, the browser should display "Angular App" as the title, followed by "Hello from MyComponent!". The application should compile without errors and run without runtime exceptions.

Edge Cases to Consider:

• Incorrect import paths (e.g., typos in file names).
• Forgetting to declare the component in the module.
• Importing modules that are not needed.

Examples

Example 1:

Input:  AppModule imports BrowserModule, FormsModule, and MyComponent. MyComponent is declared in AppModule. AppComponent template includes MyComponent.
Output: The application displays "Angular App" followed by "Hello from MyComponent!". No errors are present.
Explanation: Correct imports and declarations allow the components to be used together.

Example 2:

Input:  AppModule imports BrowserModule and FormsModule, but *not* MyComponent. MyComponent is declared in AppModule. AppComponent template includes MyComponent.
Output:  Compilation error: "MyComponent must be declared in AppModule."
Explanation:  The component must be imported into the module to be available.

Example 3:

Input:  AppModule imports BrowserModule, FormsModule, and MyComponent. MyComponent is *not* declared in AppModule. AppComponent template includes MyComponent.
Output:  Runtime error: "Error: Component MyComponent is not declared and imported."
Explanation:  Even if imported, the component must be declared in the module's declarations array.

Constraints

• The solution must be written in TypeScript.
• The solution must use Angular version 16 or higher.
• The solution should be concise and follow Angular best practices.
• The solution should not include any unnecessary dependencies.

Notes

• Focus on the correct import and declaration syntax.
• Consider the difference between importing a module and declaring a component within a module.
• Use relative paths for imports to ensure portability.
• The FormsModule is included to demonstrate module imports, but it is not directly used in the component logic. Its presence does not affect the core requirement of importing and declaring MyComponent.