[cpeterso]

> 1. Spidermonkey.wasm is the basis of Fastly's JavaScript on Compute@Edge support.

How difficult is staying up to date with SpiderMonkey's latest or pre-release upstream versions? Do have to maintain your own SpiderMonkey patches to make upstream work for you?

[phickey]

We worked with Igalia to upstream the SpiderMonkey patches required to build for wasm32-wasi. We point to a fixed version (see: https://github.com/fastly/spidermonkey-wasi-embedding) which we haven't updated for a minute.