The downside mentioned in the blog post is worth calling out:
> No technology is magical, every transition comes with disadvantages. An Isolate-based system can’t run arbitrary compiled code. Process-level isolation allows your Lambda to spin up any binary it might need. In an Isolate universe you have to either write your code in Javascript (we use a lot of TypeScript), or a language which targets WebAssembly like Go or Rust.
It’s also worth noting that for JavaScript the Workers Runtime environment [1] is more similar to the browser than to Node.js. Thus you cannot include NPM packages directly, e.g. you could not simply:
const express = require('express')
[1]:
https://developers.cloudflare.com/workers/reference/apis/sta... "Workers Runtime APIs"
