event.context and event.node.req.__unenv__

[Janibek6119]

Until the #3224 I was happy assuming that event.context being shared between the main event and the sub-events per single clientside fetch is a cool feature. My middleware queried the DB for user/auth data only once per each clientside request, such as page navigation requests too, where some of pages bred 4-5 "implicit" requests, via useAsyncData() or plugins with $fetch or whatever.

Now turns out that it wasn't a feature and it's not even OK to use it?

Anybody knows how to "properly" do it, then? For now I just shamelessly:

export default defineEventHandler(async () => {
  // ...
  // if (event.context.session) return; // Ruined since #3224
  if (event.node.req.__unenv__?.session) {
    // Skipping this middleware run because the context is already filled from a previous run
    event.context.session = event.node.req.__unenv__.session;
    return;
  }
  const maybeSessionId = getCookie(event, "auth_token");
  event.context.session = await validateSessionAndGetData(maybeSessionId)
  return