Because of the ui is loaded from jsdeliver cdn, an internet environment is required.
But you can also bypass that, for example, using pake to pre-build an native app in your OS, then you can use the app without network. (Network is required during installation )
# install a pake using npm
$ npn i -g pake
# build a native app
$ pake https://github.com/sunwu51/SwapperUI
# install native app, double click the msi file

open the native app
