async fetch with types

http.ts

export const http = <T>(request: RequestInfo): Promise<T> => {
  return new Promise((resolve) => {
    fetch(request)
      .then(response => response.json())
      .then(body => {
        resolve(body);
      });
  });
};
  
// example consuming code 
interface ITodo {
  userId: number;
  id: number;
  title: string;
  completed: boolean;
}
  
const data = await http<ITodo[]>(
  "https://jsonplaceholder.typicode.com/todos"
);