trim and fetch some hn stuff

hacker-news.js

/*
function setCustomStyle(content) {
  let style = q('#custom-style')
  if (q('#custom-style') === null) {
    style = document.createElement('style')
    style.id = 'custom-style'
    document.head.appendChild(style)
  }
  style.textContent = content
}
setCustomStyle(`
  .reply {
    display: none;
  }
`)*/

//const q = (qry) => document.querySelector(qry)

const qs = (qry) => Array.from(document.querySelectorAll(qry))
const has = (target, key) => target.indexOf(key) !== -1
const hasMultiple = (target, keys) => keys.every(key => has(target, key))
let separator = `\n\n${'-'.repeat(25)}\n\n`

function searchAndMerge(searchKeys) {
  
  // Remove comments (w/ depth > 1) and unnecessary contents.
  qs('.reply').forEach(e => {
    e.remove()
  })
  qs(
    [1,2,3,4,5,6,7,8,9,10].map(e => `img[width="${e * 40}"]`).join(',')
  ).forEach(e => {
    e.closest('.athing').hidden = true
  })

  const visibleEls = qs('.athing')
    .filter(e => !e.hidden)
    .map(el => el.querySelector(':scope .comment'))

  const merged = visibleEls.reduce((result, el) => {
    if (el) {
      const content = el.textContent.trim()
      if (hasMultiple(content.toLowerCase(), searchKeys)) {
        return result + content + separator
      }
    }
    return result
  }, '')

  return merged
}

copy(searchAndMerge(['javascript']))