get gist text - get gist raw text - fetch gist text

example.ts

const gistUrl = 'https://gist.github.com/sturmenta/df1c9da1f219c88e996e48f19d57acd3';

const {data, error} = await getGistFirstFileText(`${gistUrl}.json`);

console.log(data);

// ## some title
//
// some text

get-gist-first-file-text.ts

import {xmlGetHttpRequest} from './xml-get-http-request';

export const getGistFirstFileText = async (
  url: string,
): Promise<{
  error?: string;
  data?: any;
}> => {
  return new Promise(async res => {
    try {
      const {data: gistData, error: gistError} = await xmlGetHttpRequest(url);
      if (gistError) res({error: gistError});

      // ─────────────────────────────────────────────────────
      // 1. find raw link
      const html: string = JSON.parse(gistData).div;
      let rawLink = '';
      html.split('href="').forEach(text => {
        const link = text.split('"')[0];
        if (link.includes('/raw/')) rawLink = link;
      });
      if (!rawLink) res({error: 'raw link not found'});
      // ─────────────────────────────────────────────────────
      // 2. get raw text
      const {data: rawData, error: rawError} = await xmlGetHttpRequest(rawLink);
      if (rawError) res({error: rawError});
      // ─────────────────────────────────────────────────────

      res({data: rawData});
    } catch (e) {
      res({error: String(e)});
    }
  });
};

xml-get-http-request.ts

export const xmlGetHttpRequest = async (
  url: string,
): Promise<{
  error?: string;
  data?: any;
}> => {
  return new Promise(res => {
    try {
      const request = new XMLHttpRequest();

      request.onreadystatechange = function () {
        if (request.readyState === 4) {
          if (request.status === 200) res({data: request.responseText});
          else res({error: String(request.status)});
        }
      };

      request.open('GET', url, true);
      request.send();
    } catch (e) {
      res({error: String(e)});
    }
  });
};