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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.

Visit site#2 on Show HN the day before · 27 points
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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

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

  1. Show HNPosted on Show HN

  2. Show HN27 points, ranked #30 on Daily Launch

Launch Score, last 7 days

Ranked on one day so far: 53 of 100 on 29 October.

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