nyaa_filter.js

// ==UserScript==
// @name Nyaa: filter out garbage
// @namespace Violentmonkey Scripts
// @match https://nyaa.si/
// @grant none
// ==/UserScript==

let blockedTags = [
  'JAM_CLUB',
  'StreamAnime',
  'Ohys-Raws',
  'Leopard-Raws',
  'NSBC',
  'PuyaSubs!',
  'ASTARIA-ANIME',
  'Lilith-Raws',
  'Anime Land',
  ['【悠哈璃羽字幕社】', 'as-is']
]

let match = (tag, title) =>
  typeof tag == 'string' ? title.startsWith('[' + tag + ']') :
tag[1] == 'as-is' ? title.startsWith(tag[0]) :
  false;
  

let shouldFilter = title => blockedTags
  .map(tag => match(tag, title))
  .includes(true);

let list = document.getElementsByClassName('torrent-list')[0].children[1].children;
let toRemove = [];
for (let row of list) {
  let foo = row.children[1].children;
  let title = foo[foo.length - 1].title;
  if (shouldFilter(title)) {
    toRemove.push(row);
  }
}
for (let row of toRemove) {
  row.remove();
}