Can this lib be used in the browser?

I integrated this lib in a web app, bundled with react-scripts and the bundle size increased a LOT
```
782.65 KB (+311.35 KB)  build/static/js/2.55253543.chunk.js
```

it makes me wonder if this lib is meant to be used in the browser (additionally to node)? For example formapi supports both node and browser targets, and adds 'only' 60KB in the bundle 
