(() => {
  // <stdin>
  var copyText = '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path fill="currentColor" d="M288 448L64 448l0-224 64 0 0-64-64 0c-35.3 0-64 28.7-64 64L0 448c0 35.3 28.7 64 64 64l224 0c35.3 0 64-28.7 64-64l0-64-64 0 0 64zm-64-96l224 0c35.3 0 64-28.7 64-64l0-224c0-35.3-28.7-64-64-64L224 0c-35.3 0-64 28.7-64 64l0 224c0 35.3 28.7 64 64 64z"/></svg>';
  var copiedText = 'Copied! <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path fill="currentColor" d="M64 32C28.7 32 0 60.7 0 96L0 416c0 35.3 28.7 64 64 64l320 0c35.3 0 64-28.7 64-64l0-320c0-35.3-28.7-64-64-64L64 32zM337 209L209 337c-9.4 9.4-24.6 9.4-33.9 0l-64-64c-9.4-9.4-9.4-24.6 0-33.9s24.6-9.4 33.9 0l47 47L303 175c9.4-9.4 24.6-9.4 33.9 0s9.4 24.6 0 33.9z"/></svg>';
  function createCopyButton(codeblock) {
    const container = codeblock.parentNode.parentNode;
    const copybutton = document.createElement("button");
    copybutton.classList.add("copy-button");
    copybutton.innerHTML = copyText;
    function copyingDone() {
      copybutton.innerHTML = copiedText;
      setTimeout(() => {
        copybutton.innerHTML = copyText;
      }, 500);
    }
    copybutton.addEventListener("click", (cb) => {
      if ("clipboard" in navigator) {
        navigator.clipboard.writeText(codeblock.textContent);
        copyingDone();
        return;
      }
      const range = document.createRange();
      range.selectNodeContents(codeblock);
      const selection = window.getSelection();
      selection.removeAllRanges();
      selection.addRange(range);
      try {
        document.execCommand("copy");
        copyingDone();
      } catch (e) {
      }
      ;
      selection.removeRange(range);
    });
    if (container.classList.contains("highlight")) {
      container.appendChild(copybutton);
    } else if (container.parentNode.firstChild == container) {
    } else if (codeblock.parentNode.parentNode.parentNode.parentNode.parentNode.nodeName == "TABLE") {
      codeblock.parentNode.parentNode.parentNode.parentNode.parentNode.appendChild(copybutton);
    } else {
      codeblock.parentNode.appendChild(copybutton);
    }
  }
  window.addEventListener("DOMContentLoaded", (event) => {
    document.querySelectorAll("pre > code").forEach((codeblock) => createCopyButton(codeblock));
  });
})();