cleanup-unnecessary-branches.bookmarklet

javascript:(function()%7B(function(params)%20%7Bsleep%20%3D%20async%20(timeout%20%3D%201000)%20%3D%3Enew%20Promise(resolve%20%3D%3E%20setTimeout(resolve%2C%20timeout))%3BfindDeletable%20%3D%20()%20%3D%3E%5B...document.querySelectorAll(%22.branch-actions%22)%5D.filter(el%20%3D%3Eel.querySelector(%22.State--red%22)%20%7C%7C%20el.querySelector(%22.State--purple%22)).map(el%20%3D%3E%20el.querySelector(%22form%20button%22))%3BclickDelete%20%3D%20async%20deletable%20%3D%3E%20%7Bfor%20(button%20of%20deletable)%20%7Bbutton.click()%3Bawait%20sleep()%3B%7D%7D%3BnextPage%20%3D%20async%20()%20%3D%3E%20%7Bawait%20sleep(2000)%3Bnext%20%3D%20%5B...document.querySelectorAll(%22.pagination%20a%22)%5D.filter(el%20%3D%3E%20%2FNext%2F.test(el.innerText))%5B0%5D%3Bif%20(!next)%20throw%20new%20Error(%22done%3F%22)%3Bnext.click()%3B%7D%3Bgo%20%3D%20async%20()%20%3D%3E%20%7Bawait%20clickDelete(findDeletable())%3Bawait%20nextPage()%3B%7D%3Bgo()%3B%7D)()%7D)()

cleanup-unnecessary-branches.js

(function(params) {
  sleep = async (timeout = 1000) =>
    new Promise(resolve => setTimeout(resolve, timeout));

  findDeletable = () =>
    [...document.querySelectorAll(".branch-actions")]
      .filter(
        el =>
          el.querySelector(".State--red") || el.querySelector(".State--purple")
      )
      .map(el => el.querySelector("form button"));

  clickDelete = async deletable => {
    for (button of deletable) {
      button.click();
      await sleep();
    }
  };

  nextPage = async () => {
    await sleep(2000);
    next = [...document.querySelectorAll(".pagination a")].filter(el => /Next/.test(el.innerText))[0];
    if (!next) throw new Error("done?");
    next.click();
  };

  go = async () => {
    await clickDelete(findDeletable());
    await nextPage();
  };

  go();
})();