Failed to use pyodide-kernel out of Jupyterlite

In a Javascript environment,
```
import pyodide from 'https://cdn.jsdelivr.net/npm/pyodide@0.27.2/+esm'
```
works.

In order to have additional features, I tried to use pyodide-kernel but failed.

Both
```
import jupyterlitepyodideKernel from 'https://cdn.jsdelivr.net/npm/@jupyterlite/pyodide-kernel@0.5.2/+esm'
```
and
```
const jupyterlitepyodideKernel = await import('https://cdn.jsdelivr.net/npm/@jupyterlite/pyodide-kernel@0.5.2/+esm');
```
caused
```
Error: Failed to bundle using Rollup v2.79.2: failed to resolve an internal import. If you believe this to be an issue with jsDelivr, and not with the package itself, please open an issue at https://github.com/jsdelivr/jsdelivr
at https://cdn.jsdelivr.net/npm/@jupyterlite/pyodide-kernel@0.5.2/+esm:6:8
```

```javascript
await import("https://cdn.jsdelivr.net/npm/@jupyterlite/pyodide-kernel@0.5.2/lib/index.min.js")
```
caused
```
SyntaxError: [2:95]: Unterminated template literal
```

Just wonder whether it is possible to use pyodide-kernel without Jupyterlite.

Please clarify.
Thanks,