(() => {
  const tbody = [...document.querySelector("table").querySelectorAll("tr")]
    .map(tr =>
        [...tr.querySelectorAll("td")]
        .map(td => (
            td.querySelector("img") ?
            td.querySelector("a").href :
            td.textContent)
        )
    );
  const thead = tbody.shift();
  const data = tbody.map(td =>
    td.reduce(
      (prev, curVal, curIdx) => Object.assign(prev, { [thead[curIdx]]: curVal }),
      {}
    )
  );
  const pokemons = data.reduce((prev, cur) => Object.assign(prev, { [cur['Pic']]: cur['Pokémon'] }), { '-': null });
  const convertedData = data.map(datum => Object.assign(datum, {
    'Evolves From': pokemons[datum['Evolves From']],
    'Evolves Into': pokemons[datum['Evolves Into']],
  }, {})).map(datum => (
    delete datum['Pic'],
    datum['Candy Required'] = datum['Candy Required'] === '-' ? null : Number(datum['Candy Required']),
    datum['Type 1'] = /[^\/]+(?=-type-pokemon.html)/.exec(datum['Type 1']),
    datum['Type 1'] = datum['Type 1'] && datum['Type 1'][0],
    datum['Type 2'] = /[^\/]+(?=-type-pokemon.html)/.exec(datum['Type 2']),
    datum['Type 2'] = datum['Type 2'] && datum['Type 2'][0],
    datum
  ));
  console.log(JSON.stringify(convertedData));
})()