Instance_mute_for_Mastodon.user.js

// ==UserScript==
// @require      https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js
// @name         Instance mute for Mastodon
// @namespace    https://mastodon.social/web/*
// @version      0.7
// @description  
// @author       https://mastodon.social/@yatchi
// @match        https://mastodon.social/web/*
// @grant        unsafeWindow
// @run-at       document-end
// ==/UserScript==

// List the domains to mute here.
var mutedDomains = ['domain1.com', 'domain2.com'];

// List the domains to whitelist here. If there are any entries here, the list of muted domains will be ignored.
var whitelistedDomains = [];

function processStatus(status, whitelisting, re, skipColumnCheck) {
  var displayName = status.find('span.display-name').first();
  if (displayName.length > 0 && whitelisting === (re.exec(displayName.text()) === null) &&
      (skipColumnCheck || $.contains($('div.columns-area > div:last-child').get(0), status.get(0)))) {
    status.hide();
  }
}

$(document).ready(function () {
  if (mutedDomains.length + whitelistedDomains.length > 0) {
    var whitelisting = whitelistedDomains.length > 0;
    var domains = mutedDomains;
    if (whitelisting) {
      domains = whitelistedDomains;
    }
    domains = domains.map(function(str) { return ' @[^@]+@' + str.replace(/[.?*+^$[\]\\(){}|-]/g, "\\$&") + '$'; });
    if (whitelisting) {
      domains.push(' @[^@]+$');
    }
    var re = new RegExp(domains.join('|'), 'i');

    $(document).on('DOMNodeInserted', function(e) {
      if (window.location.pathname.endsWith('public')) {
        var target = $(e.target);
        if (target.hasClass('status')) {
          processStatus(target, whitelisting, re);
        }
        else if (target.hasClass('column')) {
          target.find('div.status').each(function() {
            processStatus($(this), whitelisting, re, true);
          })
        }
      }
    });
  }
});