Doesn't work when bundling

Make a new folder and run these four commands to set up a basic bundle with [esbuild](https://esbuild.github.io/) (webpack competitor):

```
npm install htmx.org hyperscript.org esbuild
echo 'require("htmx.org/dist/htmx.js"); require("hyperscript.org/dist/_hyperscript.js");' > app.js
npm exec -- esbuild app.js --bundle --outfile=bundle.js
echo '' > index.html
```

... and then open `index.html` in the browser. htmx successfully loads and works, but hyperscript breaks with a couple of these errors:

```
Uncaught ReferenceError: _hyperscript is not defined
```

It looks like hyperscript's module loading wrapper is only applied to the runtime, and not the individual commands.