Yavashark
Announcing Yavashark, a small embeddable and easily extendable JavaScript engine that passes 82% of test262 with support for Temporal, Intl and React/TS.
Yavashark launched on 28 October 2026. It ranked #30 on Daily Launch on 29 October 2026 with a Launch Score of 53, from 27 points on Show HN. It was new in the ranking that day.
What is Yavashark?
Feel free to give me feedback or discuss what you have on your mind. I had lots of fun building this, so I hope you have too reading this!
From its Hacker News post
Yavashark is a launch on Show HN.

Screenshot of yavashark.dev
In its own words
I've Built a JavaScript Engine Every Day for 950 Days
From its Show HN post
Launch timeline
Launch Score, last 7 days
Ranked on one day so far: 53 of 100 on 29 October.