src/api/fetchAPI.ts

async function fetchAPI<TBody, TResponse>(
  url: string,
  method: 'GET' | 'POST' | 'PUT' | 'DELETE' = 'POST',
  body?: TBody,
  headers?: HeadersInit
): Promise<TResponse> {
  const response = await fetch(url, {
    method,
    headers: {
      'Content-Type': 'application/json',
      ...headers
    },
    body: JSON.stringify(body)
  });

  if (!response.ok) {
    throw new Error(`HTTP error! Status: ${response.status}`);
  }

  return response.json() as TResponse;
}

export default fetchAPI;