Is building wordpress theme mostly with reactjs/angularjs on top of WP Rest API theme allowed at envato?

I want to know that if i develop a theme which have all required WP theme functionality/features (permalinks, seo support, widgets etc) but that is developed mostly with JS using reactjs or angular js, will this theme be accepted or simply will be rejected due this decoupled structure nature. Definitely developing theme this way will take more effort but question is about where it will be permissible.