Is this repository still maintained?

[aitorllj93]

Hi, I would like to know if this repository is being maintained. I saw there haven't been commits for a long time.
If not, do you know any alternative?
I'm interested on the converter interface mentioned in #29.
Also, I think the source code is a little bit outdated, using prototypes makes it harder to read, maybe it could be rewritten in TypeScript or at least plain JavaScript with classes