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Marius Schulz

@mariusschulz

🛠️ Claude Code at @AnthropicAI
❤️ Passionate about all things Web
London, England mariusschulz.com Joined June 2010
774 Following 6K Followers 13K Posts

Latest posts 5

Marius Schulz @mariusschulz
This is excellent performance work: a 2x speedup for most JS parsers, powered by SIMD and other optimizations. Looking forward to reading the writeup!
Shanon Jackson Verified account @Shanshrew Jul 6
1 Year of Research coming to an end. 8 Months seeing no results, Almost quitting twice. November/December of last year finally seeing a very narrow path to a universal 2x perf improvement on every modern JS parser which would take me another 4 months to build.

This will land in oxc_parser fairly soon speeding up OXLint, OXFmt, Vite, Rolldown, Deno (oxc consumer) almost immediately.

In the long term it's likely that it will land in V8/SpiderMonkey/Bun/JavascriptCore/Typescript/+ Every other JS parser implementation

The wins come from a few key elements, obviously 1 novel "SIMD For Context Sensitive Languages" the other key elements take it from a 20% win e2e to a 80-200% win (99% of files will see a 80-100% perf improvement).

These key elements translate to any AST design and thus will speed up not only all JS tooling but every major browser when complete.
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