Basic example of a generic type in TypeScript.

basic-generic-example.ts

// See: https://www.digitalocean.com/community/tutorials/how-to-use-generics-in-typescript

type StarWarsApiResponse = {
  name: string;
  rotation_period: string;
  orbital_period: string;
  diameter: string;
  climate: string;
  gravity: string;
  terrain: string;
  surface_water: string;
  population: string;
  residents: string[];
  films: string[];
  created: string;
  edited: string;
  url: string;
};

async function fetchApi<ResultType>(path: string): Promise<ResultType> {
  const response = await fetch(`https://swapi.dev/api/${path}`);
  return response.json();
}

async function run() {
  const response = await fetchApi<StarWarsApiResponse>('planets/3');
  console.log(response);
}

run();

export { };