How to set up CDN acceleration for static files across multiple extensions？

I am using extensions such as @jupyterlab/git, jupyterlab_tensorboard_pro, and @jupyter-lsp/jupyterlab-lsp.
Currently, there are many small JavaScript files, and I would like to deploy these small files on a content delivery network (CDN). How should I configure it? I tried to place them in the jupyter/labextensions/ directory, and then set c.ExtensionApp.static_url_prefix = "xxx/jupyter/labextensions/" in the configuration, but it did not take effect.
@minrk @jdfreder @takluyver
### Proposed Solution

### Additional context

Review how static_url_prefix is applied to jupyter/labextensions/ and how extension JavaScript assets are served. Verify whether the desired CDN URL is supported for multiple extensions, then document the working configuration and a reproducible check. No file or test is named in the issue.

Written by the indexing model from the issue text.