doc: add minutes for meeting 4 April 2023 (#611)

* doc: add minutes for meeting 4 April 2023

Signed-off-by: Michael Dawson <[email protected]>

wg-meetings/2023-04-04.md

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+# Node.js  Diagnostics WorkGroup Meeting 2023-04-04
+
+## Links
+
+* **Recording**:  https://www.youtube.com/watch?v=MDRi3PjK4aA
+* **GitHub Issue**: https://github.com/nodejs/diagnostics/issues/610
+
+## Present
+
+
+* Michael Dawson (@mhdawson)
+* Stephen Belanger (@qard)
+* Chengzhong Wu (@legendecas)
+
+## Agenda
+
+## Announcements
+
+
+* Stephen, tracing channel as discussed in previous meetings has landed, should be out in Node.js 20
+
+*Extracted from **diag-agenda** labeled issues and pull requests from the **nodejs org** prior to the meeting.
+
+
+### nodejs/diagnostics
+
+* TC39 proposal AsyncContext [#608](https://github.com/nodejs/diagnostics/issues/608)
+  * Chengzhong
+    * has been a while since discussed in this venue
+    * have been working over the last year to get a AsyncContext proposal added to language in
+      TC39 - reached stage 2 just recently
+    * Next step is to find more use was and work through perf and other issues in the browser
+    * Good time to discuss in diagnostic wg and provide feedback
+    * We should also discuss migration path
+  * Michael understand it was based on AsyncLocalStorage, how big will the migration be
+  * Chengzhong - already some work by James Snell
+    https://github.com/nodejs/node/issues/46262 due to differences in semantics 
+  * Want people to be aware/review to make sure proposal matches expectations
+  * Michael should we work to get broader input on proposal
+  * Step 1
+    * Get Diagnostics WG feedback
+  * Maybe later step, then broader feedback. Stage 2 proposal is not far enough along for
+    broader feedback later.
+  * Ask is that people from the Diagnostic WG review the proposal and comment either in
+    https://github.com/nodejs/diagnostics/issues/608 or open an issue in the proposal repository.
+  * Stephen, James Snell talked about plans to re-write AsyncLocalStorage to not use async
+    hooks, but instead on V8's context ContinuationPreservedEmbedderData APIs.
+  * Chengzhong, probably not a good idea to migrate to the new API as V8 suggested
+    the APIs are still experimental and can be changed significantly.
+  * Some methods in AsyncLocalStorage are not part of AsyncContext, Stephen is working on\
+    seeing if Datadog can work around not having them.
+  * Stephen think it is mostly compatible, have some some additions in mind for
+    AsyncLocalStorage, but holding off on Understanding if those would also be
+    compatible with AsyncContext
+
+* User Journey tracking documentation [#502](https://github.com/nodejs/diagnostics/issues/502)
+  * Need Rafael in the discussion so lets skip until next time
+
+* Stephen
+  * Proposed session for collaborator summit - https://github.com/openjs-foundation/summit/issues/349
+  * Any good agenda items for that?
+    * Already includes AsyncLocal Storage
+  * Michael good summary of diagnostics Channels work that Stephen has worked on would be
+    good as opportunity for greater visibility and feedback.
+
+## Q&A, Other
+
+
+## Upcoming Meetings
+
+
+* **Node.js Project Calendar**: <https://nodejs.org/calendar>
+
+
+Click `+GoogleCalendar` at the bottom right to add to your own Google calendar.