this package seems to rely on process.platform, which seems to be either not supported in the browser or buggy with fusebox, needless to say when i replaced it with this package https://www.npmjs.com/package/properties-to-json it worked in the browser after bundling with fusebox (and quantam plugin)
I am not 100% sure what the root of the issue is, but i am speculating that either your implementation isn't browser friendly or maybe it just doesnt work with fusebox, if the former is correct, maybe mention that this package is meant to be used in node and not in the browser in the readme?