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

GPT-5: Key characteristics, pricing and model card - 7th August 2025
OpenAI's new open weight (Apache 2) models are really good - 5th August 2025
ChatGPT agent's user-agent - 4th August 2025

javascript 718 mozilla 112 spidermonkey 5 webassembly 80 fastly 5

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