Yeah, I mean that's what I was saying I thought the definition was in my original comment. But taken the way the OP apparently meant it, it does mean something similar to "praise highly" or "very excited about." The meaning's evolved.

I mean, this isn't like a kickstarter project where you have a nice video from some random person and nothing but blind optimism it can actually deliver. This is Facebook open-sourcing a library that has been in their production codebase for multiple years. It solves a specific problem that most developers are intimately familiar with, and has already been praised by people in the tech community who aren't officially associated with Facebook. It's ok to get excited about this :)