List Wikis for a GitHub Organization's Repositories

list-wikis.js

/**
 * Executing the following in Chrome's console while viewing an organization's
 * repositories will list available wiki pages for the those repostories. If
 * paginated, you will have to repeat for each page.
 */
function listWikis() {
  return Promise.all($('li.source h3 a').map(src => {
    const home = src.href + '/wiki';
    return new Promise(function(resolve) {
      fetch(home, { credentials: 'include' }).then(r => r.text().then(t => {
        const d = new DOMParser().parseFromString(t, 'text/html'), pages = $('a.wiki-page-link', d);
        resolve({
          text: src.text.trim(),
          href: home,
          pages: pages.slice(1).map(a => { return {
            text: a.text,
            href: window.location.origin + a.getAttribute('href')
          }; }),
          exists: pages.length > 0
        });
      }));
    });
  })).then(r => r.filter(w => w.exists)).then(toMarkdown);
  
  function $(selector, start=document) { return Array.prototype.slice.call(start.querySelectorAll(selector), 0); }
  function toMarkdown(wikis) {
    const lf = '\n', max = 10;
    console.log(wikis.map(r => {
      const pages = r.pages.slice(0, max).map(p => toLink(p, '  * ')).join(lf), pp = r.pages.length - max;
      return toLink(r) + (pages ? lf : '') + pages + (pp > 0 ? `${lf}  * ${pp} more pages` : '');
    }).join(lf));
    return wikis;
    
    function toLink(a, prefix='* ') { return `${prefix}[${a.text}](${a.href})`; }
  }
}