5 amazing new JavaScript features in ES15 (2024)

2024: Another incredible year of brand-new JS feature upgrades with ES15.

From sophisticated async features to syntactic array sugar and modern regex, JavaScript coding is now easier and faster than ever.

1. Native array group-by is here

Object.groupBy():

Literally the only thing keeping dinosaur Lodash alive — no more!

I was expecting a new instance method like Array.prototype.groupBy but they made it static for whatever reason.

Then we have Map.groupBy to group with object keys: