index.js

import fs from "fs";
import fetch from "node-fetch";
import parser from "xml2json";

const FEED_URL = "https://dharma.hypotheses.org/feed";
const TAG_OPEN = `<!-- FEED-START -->`;
const TAG_CLOSE = `<!-- FEED-END -->`;

const fetchArticles = async () => {
  const articles = await fetch(FEED_URL);
  const articlesText = await articles.text();
  const articlesJSON = parser.toJson(articlesText);
  const newC = JSON.parse(articlesJSON).rss.channel.item.slice(0, 5);

  return newC.map(({ title, link }) => `<a href="${link}" class="list-group-item list-group-item-action">${title}</a>`).join("\n");
};

async function main() {
  const readme = fs.readFileSync("./index.html", "utf8");
  const indexBefore = readme.indexOf(TAG_OPEN) + TAG_OPEN.length;
  const indexAfter = readme.indexOf(TAG_CLOSE);
  const readmeContentChunkBreakBefore = readme.substring(0, indexBefore);
  const readmeContentChunkBreakAfter = readme.substring(indexAfter);

  const posts = await fetchArticles();

  const readmeNew = `
${readmeContentChunkBreakBefore}
${posts}
${readmeContentChunkBreakAfter}
`;

  fs.writeFileSync("./index.html", readmeNew.trim());
}

try {
  main();
} catch (error) {
  console.error(error);
}