This is currently published as 0.5.0-rc4 on npm:

• JS https://cdn.jsdelivr.net/npm/@pyscript/core@next/dist/core.js
• CSS https://cdn.jsdelivr.net/npm/@pyscript/core@next/dist/core.css

Documentation

pyscript/docs#134

Summary

The latest coincident is being tested to provide the following features:

• faster than before in general
• easier to maintain, debug, or reason about
• SharedArrayBuffer are always on so "it just works" at least when it comes to async utilities (main invoking worker exposed utilities)
• if a serviceWorker or service_worker url is passed as options / config, it eventually does fallback to sync XHR based exchanges that makes it still possible to use window or document from workers, even if headers required to enabled native SharedArrayBuffer are nowhere in the project, thanks to sabayon helper
• logic has been improved via js-proxy too, which makes the whole dance way more elegant and less error prone, granting correct types all over

The current polyscript@next also has been improved to both use latest coincident and simplify the bootstrap logic, providing better ways to also understand when window or document cannot be used, printing better / more meaningful errors too.

The concept here is that as long as you don't try to use window or document, you don't need to care about SharedArrayBuffer so that general DX should hopefully be better now.

Literally nothing that was working before should break now, quite the opposite, it should be eventually slightly faster with more fine-tuned memory leaks prevention thanks to underlying libraries updates and the communication channel between multiple workers have been improved too.