JavaScript
Yes, okay, ES2015 rules, and ES2017–2022 brought about a lot of cool things (most notably async/await, async iteration, optional chaining, private members), but a ton of cool stuff is expected to land in the next few years, too… and we can play with it already!
Christophe takes you through a whirlwind tour of the upcoming features he’s most excited about, due to become official in 2024, 2025… or 2026 ;-)