[Beta] replace Sandpack

[nihgwu]

Last weekend I created a React Runner with CodeMirror(I copied the example from this PR) which does the same work as Sandpack does, no iframe, no extra resource loading, no bundling, so it's super fast and get updated simultaneously on inputing. I'm using shadow DOM to support scoped styling, so it doesn't SSR, if we can just define the style globally, then it will like here

So I'd like to ask if it's viable to replace Sandpack with React Runner, I can work on the prototype and polish it further

[gaearon]

Can you make a prototype PR so we can compare? Ideally with enough feature parity that all sandboxes (including the ones that have Immer in them) run.

[nihgwu]

@gaearon Immer should work definitely, you just need add imports to the scope, here is another example of on-demand import, I'll try to make a prototype PR later, whilst the example I created last weekend should have covered most of the features

[BartoszKlonowski]

Closing as I find this issue unfortunately outdated and no longer valid with the way how react.dev handles examples.
Still, if there's a space or need for improvements please let me know.
Thank you!