A Greasemonkey/Tampermonkey/Violentmonkey user script to automatically remove articles of specific types from the GitHub feed. Also registers disinterest for each of them so they may show up less often.

filter-gh-articles.js

// ==UserScript==
// @name        Remove published releases from GitHub feed
// @namespace   Violentmonkey Scripts
// @match       https://github.com/
// @grant       none
// @version     1.0
// @author      Owen Trueblood
// @description Remove published releases from GitHub feed
// @require     http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js
// @require     https://gist.github.com/raw/2625891/waitForKeyElements.js
// ==/UserScript==

const blockedArticleTypes = [
  'NEW_DISCUSSION',
  'RELEASE',
];

function submitDisinterestForm(formElement) {
  // Find the input associated with the desired text
  const labelElements = formElement.querySelectorAll('label');
  let targetInputElement = null;

  for (const labelElement of labelElements) {
    const spanElement = labelElement.querySelector('span');
    if (spanElement && spanElement.textContent.trim().startsWith('I want to see fewer')) {
      targetInputElement = labelElement.querySelector('input[type="checkbox"]');
      break;
    }
  }

  if (!targetInputElement) {
    console.error('Could not find the checkbox for the disinterest form', formElement);
    throw new Error('Could not find the checkbox for the disinterest form');
  }

  targetInputElement.checked = true;

  // Submit the form
  const formData = new FormData(formElement);
  const url = formElement.getAttribute('action');
  const options = {
    method: 'POST',
    body: formData,
    headers: {
      'accept': 'application/json',
      'x-requested-with': 'XMLHttpRequest',
    },
  };

  return fetch(url, options)
    .then(response => {
      if (response.ok) {
        console.log('Registered disinterest');
      } else {
        console.error('Form submission failed.');
      }
    });
}

function findRootArticles() {
  const allArticles = document.getElementsByTagName('article');
  const rootArticles = [];

  for (let i = 0; i < allArticles.length; i++) {
    const article = allArticles[i];
    let isDescendant = false;

    // Check if the current article is a descendant of any other article
    let parentElement = article.parentElement;
    while (parentElement !== null) {
      if (parentElement.tagName === 'ARTICLE') {
        isDescendant = true;
        break;
      }
      parentElement = parentElement.parentElement;
    }

    // If the article is not a descendant of any other article, add it to the rootArticles array
    if (!isDescendant) {
      rootArticles.push(article);
    }
  }

  return rootArticles;
}

function getDisinterestForm(article) {
  const forms = Array.from(article.getElementsByTagName('form')).filter((form) => form.getAttribute('action') === '/conduit/register_disinterest');

  if (forms.length > 0) {
    return forms[0];
  } else {
    console.error('Could not find the disinterest form for the article', article);
    throw new Error('Could not find the disinterest form for the article');
  }
}

function findRootArticles() {
  const allArticles = document.getElementsByTagName('article');
  const rootArticles = [];

  for (let i = 0; i < allArticles.length; i++) {
    const article = allArticles[i];
    let isDescendant = false;

    // Check if the current article is a descendant of any other article
    let parentElement = article.parentElement;
    while (parentElement !== null) {
      if (parentElement.tagName === 'ARTICLE') {
        isDescendant = true;
        break;
      }
      parentElement = parentElement.parentElement;
    }

    // If the article is not a descendant of any other article, add it to the rootArticles array
    if (!isDescendant) {
      rootArticles.push(article);
    }
  }

  return rootArticles;
}

function getArticleType(article) {
  const data = JSON.parse(article.getAttribute('data-hydro-view'));
  return data?.payload?.feed_card?.card_type;
}

function getBlockedArticles() {
  return findRootArticles().filter((article) => {
    const articleType = getArticleType(article);
    return blockedArticleTypes.indexOf(articleType) !== -1;
  });
}

waitForKeyElements('#conduit-feed-frame', () => getBlockedArticles().forEach(async (article) => {
  const articleType = getArticleType(article);
  const form = getDisinterestForm(article);
  await submitDisinterestForm(form);
  article.remove();
  console.log(`Deleted an article of type ${articleType}`);
}));