TeaCode and Emmet are not competitors. They work great together.
It’s more like, Emmet strings many expanders together and expands them all at once. TeaCode is a one at a time expander. Emmet is like a full programming language for HTML writing, while TeaCode is a universal macro expander with basic language functions.
Emmet is highly specialized for just two things: HTML and CSS. TeaCode works with any type of coding. Both have their place, but one doesn’t replace the other.