Simon Willison’s Weblog

Fastly Compute@Edge JS Runtime (via) Fastly’s JavaScript runtime, designed to run at the edge of their CDN, uses the Mozilla SpiderMonkey JavaScript engine compiled to WebAssembly.

Posted 20th September 2022 at 10:20 pm

Recent articles

Embracing the parallel coding agent lifestyle - 5th October 2025
Designing agentic loops - 30th September 2025
Claude Sonnet 4.5 is probably the "best coding model in the world" (at least for now) - 29th September 2025

javascript 722 mozilla 113 spidermonkey 5 webassembly 80 fastly 5

Monthly briefing

Sponsor me for $10/month and get a curated email digest of the month's most important LLM developments.

Pay me to send you less!

Sponsor & subscribe