seleniumでjavascriptを実行するもunterminated regular e xpression literal

以下のサイトのjavascriptをdriver.execute_scriptで実行しようとしましたがこのエラーが発生しました。
https://qiita.com/kulikala/items/39536872e0f1c492b358

SyntaxError: unterminated regular expression literal (Selenium::WebDriver::Error::JavascriptError)

確認してみましたがjavascriptとしてはエラーはありませんでした。
また、alertなどは問題ありませんでした。

もとがブックマークレットなのでjavascriptを変換したときに何か失われてしまう部分でもあるのでしょうか。

よろしくお願いします。

実行した文は長いですが以下です。

ruby
scr=<<-eos
((document, Promise, setTimeout, html, on, size, text) => {
  const $ = (query, doc = document) => doc.querySelector(query)

  const $$ = (query, doc = document) => doc.querySelectorAll(query)

  const appendChild = (child, parent = document.body) => parent.appendChild(child)

  const createElement = tag => document.createElement(tag)

  const cleanup = () => {
    if (iframe !== undefined) {
      iframe.remove()
    }
  }

  const concat = (base, append, more = []) => base.concat(append).concat(more)

  const convert = row => `"${row.map(s => replaceArr(
    s && typeof s !== 'string' && text in s
      ? s[text]
      : s,
    [/"/g, /\n/g],
    ['""', '']
  )).join('","')}"`

  const decode = href => {
    let out = href

    try {
      out = decodeURI(href)
    } catch (e) {}

    return out
  }

  const download = () => {
    const blob = new Blob([
      new Uint8Array([0xEF, 0xBB, 0xBF]),
      joinLines(concat([
        convert([
          'href',
          'decoded',
          'title',
          'breadcrumb',
          'date',
          'description'
        ])
      ], ret))
    ], {
      type: 'text/csv'
    })

    const a = createElement('a')
    const url = URL.createObjectURL(blob)

    a.download = document.title + '.csv'
    a.href = url

    a.click()

    setTimeout(() => URL.revokeObjectURL(url), 1000)
  }

  const filter = array => array.filter(item => !!item)

  const joinLines = array => array.join('\n')

  const last = (() => {
    const g = $$('#rso .g')

    if (g[size] === 0) {
      return $('#rso')
    } else {
      return g[g[size] - 1].parentNode
    }
  })()

  const main = async () => {
    const found = scan()

    if (found[size] === 0) {
      alert('No item found.\nIf you think this script works incorrectly contact the creator.\nThx in advance.')
      return
    }

    const message = [
      `Found: ${found[size]}`,
      `Total: ${found[size] + ret[size]}`
    ]

    ret = concat(ret, found)

    await scroll()

    const pnnext = $('#pnnext', doc)

    if (pnnext === null) {
      alert(joinLines(message))

      cleanup()

      return download()
    }

    message.unshift('Continue next page?')

    if (confirm(joinLines(message))) {
      await next(pnnext.href)

      main()
    } else {
      cleanup()
      download()
    }
  }

  const mapElements = (query, callback) => Array.from($$(query, doc)).map(callback)

  const next = href => {
    if (iframe === undefined) {
      iframe = createElement('iframe')

      setStyle(iframe, {
        display: 'none'
      })

      appendChild(iframe)
    }

    const progress = createElement('div')

    setStyle(progress, {
      background: 'black',
      color: 'white',
      left: 0,
      padding: '8px 20px',
      position: 'fixed',
      top: 0,
      zIndex: 1000
    })

    progress[text] = 'Loading...'

    appendChild(progress)

    return new Promise(resolve => {
      iframe[on]('load', () => {
        doc = iframe.contentWindow.document
        progress.remove()

        const wrapper = createElement('div')
        wrapper[html] = $('#rso', doc)[html]
        appendChild(wrapper, last)

        if (doc !== document) {
          $('#xjs')[html] = $('#xjs', doc)[html]
        }

        resolve()
      }, {
        once: true
      })

      iframe.src = href
    })
  }

  const replace = (string, from, to = '') => (string || '').replace(from, to)
  const replaceArr = (string, from, to) => from.reduce((prev, pattern, index) => replace(prev, pattern, to[index]), string)

  const scan = () => filter(concat(
    // All tab
    mapElements('#rso div.g > div', item => {
      const a = $('div.yuRUbf a', item)
      if (!a || item === snippet) {
        return false
      }

      const href = a.href
      let date
      let desc

      if ($('#media_result_group', item)) {
        desc = $('[role="heading"] span.hgKElc', item)
      } else if ($('div.IsZvec g-img', item)) {
        date = $('div.IsZvec div.fG8Fp', item).firstChild.wholeText
        desc = $('div.IsZvec span.aCOpRe', item)
      } else {
        date = $('div.IsZvec span.wuQ4Ob', item)
        desc = $('div.IsZvec div.VwiC3b', item)
      }

      return convert([
        href,
        decode(href),
        $('div.yuRUbf h3', item),
        $('div.yuRUbf cite', item),
        typeof date === 'string'
          ? date
          : date && date.children[size] === 0 ? replace(date[text], / . ?$/) : '',
        desc
          ? (
            date
              ? replace(desc[text], date[text]).trimLeft()
              : desc[text]
            )
          : ''
      ])
    }),

    // News tab
    mapElements('#rso g-card > div > div > a.WlydOe', item => {
      const href = item.href

      return convert([
        href,
        decode(href),
        $('[role=heading]', item),
        $('div.CEMjEf span', item),
        $('p.S1FAPd span', item),
        $('div.GI74Re', item)
      ])
    }),

    // Images tab
    mapElements('#islrg div.isv-r', item => {
      const link = $('a[rel="noopener"]', item)
      if (link === null) {
        console.log(item)
        return false
      }
      const href = link.href
      const src = $('img', item).src

      return convert([
        href,
        decode(href),
        link.title,
        $('div.fxgdke', link),
        $('span.gRqDMe', item),
        src.startsWith('data:') ? '' : src
      ])
    })
  ))

  const scroll = () => {
    return new Promise(resolve => {
      ($('#islmp') || document.body).scrollIntoView({
        behavior: 'smooth',
        block: 'end'
      })

      const listener = () => {
        clearTimeout(timer)
        timer = setTimeout(() => {
          document.removeEventListener('scroll', listener)
          resolve()
        }, 500)
      }
      let timer

      document[on]('scroll', listener, {
        passive: true
      })
      listener()
    })
  }

  const setStyle = (target, style) => {
    for (let key in style) {
      target.style[key] = style[key]
    }
  }

  const snippet = $('#rso div.g > div div.g > div')

  let doc = document
  let iframe
  let ret = []

  main()
})(document, Promise, setTimeout, 'innerHTML', 'addEventListener', 'length', 'innerText')
eos

driver.execute_script(scr)