JSPM never picked up. Its call to fame was that it was more "future proof" using standards that were not actually standard, and had a pretty bad take on pre-bui

JSPM never picked up. Its call to fame was that it was more "future proof" using standards that were not actually standard, and had a pretty bad take on pre-building vs building in the browser and stuff. It was slow (and the ways to make it fast were very clunky) and generally, tools focusing on node/NPM entirely ended up winning out.