@@ -7,19 +7,9 @@ exports.onClientEntry = () => {
    el.innerHTML = str;
    document.body.appendChild(el);

-   const range = document.createRange();
-   range.selectNode(el);
-   window.getSelection().removeAllRanges();
-   window.getSelection().addRange(range);
-   document.execCommand(`copy`);
-   document.activeElement.blur();
-   setTimeout(() => {
-     document.getSelection().removeAllRanges();
-     document.body.removeChild(el);
-   }, 100);
+   el.select();
+   document.execCommand("copy");
+   document.body.removeChild(el);
    if (toasterId) {
      window.showClipboardToaster(toasterId);
    }

@@ -21,10 +21,6 @@ module.exports = function gatsbyRemarkCodeButtons(
    const actions = qs.parse(params);
    const { clipboard } = actions;

-   if (!language) {
-     return;
-   }
-
    if (clipboard === 'false') {
      delete actions['clipboard'];
    } else {
@@ -57,12 +53,12 @@ module.exports = function gatsbyRemarkCodeButtons(
            >
              <div
                class="${buttonClass}"
-               data-tooltip="${tooltipText}"
+               ${tooltipText ? `data-tooltip="${tooltipText}"` : ''}
              >
-               ${buttonText}${svgIcon}
+               ${[language, buttonText || svgIcon].filter((item) => item).join(' ')}
              </div>
            </div>
-           `.trim()
+         `.trim()
      };

      parent.children.splice(index, 0, buttonNode);

// 测试代码复制功能，这个代码块应该具有复制代码功能

const DEFAULT_IGNORED_FILES = ['node_modules', 'package-lock.json', 'yarn.lock'];

const ignoredFilesSet = new Set(ignoredFiles);

const getAllFiles = (dirPath) =>
   fs.readdirSync(dirPath).reduce((acc, file) => {
      // 过滤文件立即跳出下一个
      if (ignoredFilesSet.has(file)) return acc;
      const relativePath = path.join(dirPath, file);
      const isDirectory = fs.statSync(relativePath).isDirectory();
      // 判断是目录继续递归遍历
      const additions = isDirectory ? getAllFiles(relativePath) : [relativePath.replace(`${directory}/`, '')];
      return [...acc, ...additions];
   }, []);

const getFileExist = (fileList, filename = 'package.json') => {
   const found = fileList.filter((name) => name === filename);
   return found.length > null;
};

if (!getFileExist(folderFiles, 'sandbox.config.json')) {
   sandboxFiles.push({
      name: 'sandbox.config.json',
      content: '{ "template": "static" }'
   });
}

const convertNodeToEmbedded = async (node, params, options = {}) => {
   delete node.children;
   delete node.position;
   delete node.title;
   delete node.url;

   // merge the overriding options with the plugin one
   const mergedOptions = { ...embedOptions, ...options };
   const encodedEmbedOptions = queryString.stringify(mergedOptions);

   const { sandbox_id } = await fetch('https://codesandbox.io/api/v1/sandboxes/define?json=1', {
      method: 'POST',
      headers: {
         'Content-Type': 'application/json',
         Accept: 'application/json'
      },
      body: params
   }).then((x) => x.json());

   const sandboxUrl = `https://codesandbox.io/embed/${sandbox_id}?${encodedEmbedOptions}`;
   const embedded = getIframe(sandboxUrl);
   node.type = 'html';
   node.value = embedded;

   return node;
};

const nodes = [];
map(markdownAST, (node, index, parent) => {
   if (node.type === 'link' && node.url.startsWith(protocol)) {
      // split the url in base and query to allow user
      // to customise embedding options on a per-node basis
      const url = getUrlParts(node.url);
      // get all files in the folder and generate
      // the embeddeing parameters
      const dir = getDirectoryPath(url.base);
      const files = getFilesList(dir);
      const params = createParams(files);
      convertNodeToEmbedded(node, params, url.query);
      const currentNode = convertNodeToEmbedded(node, params, url.query);
      nodes.push(currentNode);
   }

   return node;
});

// 注意这里的异步化，必须等所有的请求成功响应才可继续遍历
await Promise.all(nodes);