@ou-imdt/utils/lib/fetchAs.js

Utility library for interactive media development

import getFetchDetail from './getFetchDetail.js';
import fetchBlob from './fetchBlob.js';
import fetchText from './fetchText.js';
import fetchJSON from './fetchJSON.js';
import fetchXML from './fetchXML.js';

/**
 * Fetches the url with type as, defaults to file extension
 * @param {string} url
 * @param {object} [as]
 * @returns {Promise} - that resolves to an object containg type and response
 */
export default async function fetchAs(url, as) {
  const detail = getFetchDetail(url);
  const type = (as ?? detail.type);
  const map = {
    raw: () => fetch(url),
    blob: () => fetchBlob(url),
    text: () => fetchText(url),
    json: () => fetchJSON(url),
    xml: () => fetchXML(url),
    default: () => Promise.resolve(url)
  };
  const handler = (map[type] ?? map.default);
  const response = await handler(url);
  
  return { ...detail, type, response };
}