Here's an example of how you can integrate `marked` with CodeMirror:

First, install the required packages:

```
npm install marked codemirror
```

Next, import the necessary modules in your code:

```javascript
import CodeMirror from 'codemirror';
import marked from 'marked';

import 'codemirror/mode/javascript/javascript'; // Import the desired language mode
import 'codemirror/addon/mode/simple'; // Import the CodeMirror simple mode addon
```

Then, create an instance of CodeMirror and set up the live preview functionality using `marked`:

```javascript
const editor = CodeMirror(document.getElementById('editor'), {
  mode: 'javascript',
});

const preview = document.getElementById('preview');

editor.on('change', () => {
  const content = editor.getValue();
  preview.innerHTML = marked(content);
});
```

In the example above, we create a CodeMirror instance with a specified mode (e.g., `'javascript'`). We also create a preview element (`<div id="preview"></div>`) where the rendered markdown will be displayed.

The `onChange` event of the CodeMirror editor is used to update the content of the preview element. We call `marked` on the editor's value and set it as the HTML content of the preview element, which will render the markdown with syntax highlighting.

Make sure to import the appropriate CodeMirror mode for the language you're working with. For example, if you're working with JavaScript code, import `'codemirror/mode/javascript/javascript'`.

Remember to include the necessary CSS styles for CodeMirror and the desired CodeMirror theme in your HTML file. Also, you may need to configure additional settings for CodeMirror like the theme, line numbers, etc., based on your requirements.

With this setup, as you type in the CodeMirror editor and make changes, the markdown in the preview element will be rendered dynamically by `marked`, with the correct syntax highlighting for code blocks.