Checklist for v5.

[hayleigh-dot-dev]

The next Lustre release comes with a bunch of internal changes. This meta issue tracks the things left for us to address before we can release:

• [vdom] Extract event handlers

• [vdom] Diff event handlers for prevent_default / stop_propagation / immediate. This is necessary because we'll still need this patch to send down the wire for server components.

• [vdom] Work out event mapping

• [vdom] Handle f*cking annoying edge case where the same event handler is referenced in multiple places.

• [vdom] Introduce separate keyed module.

• [vdom] Introduce a separate Keyed vdom node

• [vdom] Add the ability to virtualise existing an DOM tree for hydration.

• [vdom] Re-introduce batching of multiple class and style attributes.

• [vdom] Re-introduce hidden dangerous-unescaped-html attribute or similar mechanism to inject raw HTML.

• [vdom] Defer renders to the next animation frame, when possible.

• [components] Re-add shadow dom styles cloning

• [components] Add a named slot for prerendering elements for hydration

• [server components] Re-implement server component client runtime

• [server components] Update reconciler to work with changes sent over the wire. To minimise payload size we'll probably use an integer-tagged tuple approach so we can't use the existing reconciler.

• [server components] Add a named slot for content to render when while loading

• [server components] Add support for HTTP and SSE modes in addition to WebSockets.

[CrowdHailer]

Can we add changing this function to use the decode API, now that the dynamic API has been deprecated
https://hexdocs.pm/lustre/lustre/event.html#on

[yoshi-monster]

Already done! v5 will exclusively support the new decode API.