Passing a reference to a static class in Typescript/Angular as a parameter in a

As a newcomer to TypeScript, I recently discovered how useful it is to map an HTTP response to a class. For example:

getMovies(): Observable<Movie[]> {
  return this.http.get<Movie[]>(this.endpoint);
}

This allows me to receive a populated array of Movie classes. Inspired by this functionality, I decided to explore the idea of creating a more general method by utilizing a supposed get function in a parent class:

// child
getMovies(): Observable<Movie[]> {
  return this.super.get(class_reference_here, this.endpoint);
}

// parent
get(reference: any, endpoint: string): Observable<any> /* or <any[]> ?? */  {
    return this.http.get<reference[]>(endpoint);
}

I am curious if it's possible to implement something like this. How can I populate class_reference_here with a meaningful value? Does this approach align with TypeScript principles, or does it raise concerns? Your guidance would be immensely valuable.

Answer №1

It appears that you are searching for information on Generics.

// Here is an example of how Generics can be used in TypeScript:
// Child Component
getMovies(): Observable<Movie[]> {
  return this.super.get<Movie[]>(this.endpoint);
}

// Parent Component
get<T>(endpoint: string): Observable<T> {
    return this.http.get<T>(endpoint);
}

Answer №2

I fail to see the benefit of incorporating an abstraction layer into httpClient or any other task you are attempting. However, I recommend exploring Generics in Typescript.

function identity<T>(arg: T): T {
  return arg;
}

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