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# System prepended metadata

title: 83rd meeting of TC39

---

# 83rd meeting of TC39

- TCQ: ~~https://tcq.app/meeting/TKTK~~
  - TCQ Backup: https://docs.google.com/spreadsheets/d/1djNyRgcjqoki91NsBIJqSHv-Zs1cLl-gd5zK2LsDHFY/edit#gid=0
- Hallway track: https://hubs.mozilla.com/oAAvRHu/tc39
- Agenda: https://github.com/tc39/agendas/tree/master/2021/05.md
- Reflector: https://github.com/tc39/Reflector/issues/367
- Matrix: [TC39 Space (beta)](https://matrix.to/#/!hmsRHUEXriRovkvcin:matrix.org?via=matrix.org&via=igalia.com&via=mozilla.org)

## Day 1 ([notes](https://mths.be/tc39day1))

<details>

<summary>10:00 to 15:00 PDT (UTC -7) on Tuesday, 25 May 2021</summary>

### 10:00-12:00

- Opening & Welcome - Aki
- ~~Overview~~ Discussion of communication tools in light of Freenode management changes
- Volunteers for note-taking
- Adoption of the agenda
- Approval of the minutes from last meeting
- Secretary's Report
- ECMA262 Status Updates
- ECMA402 Status Updates
- ECMA404 Status Updates
- Test262 Status Updates
- Updates from the CoC Committee

&nbsp;

- 3m (maybe 4m) Make SharedArrayBuffer's sole parameter required Shu-yu Guo
- 15m RegExp Match Indices for Stage 4 Ron Buckton
- 15m Top-Level Await for Stage 4 Yulia Startsev
- 15m Temporal normative PRs Justin Grant
- 30m Accessible Object.prototype.hasOwnProperty() for Stage 3 (spec) Tierney Cyren
- 15m Symbols as WeakMap keys for Stage 3 (spec, slides TBD) Leo Balter

### lunch (60 minutes)

### 13:00-15:00

- 30m 🔒 Intl DisplayNames v2 for Stage 3 Frank Yung-Fong Tang
- 30m 🔒 Extend TimeZoneName Option Proposal for Stage 3 Frank Yung-Fong Tang
- 30m 🔒 Intl Enumeration API Update Frank Yung-Fong Tang
- 45m Resizable buffers for Stage 3 Shu-yu Guo
- 15m **continuation** Symbols as WeakMap keys for Stage 3 (spec, slides TBD) Leo Balter

</details>

## Day 2 ([notes](https://mths.be/tc39day2))

<details open>

<summary>10:00 to 15:00 PDT (UTC -7) on Wednesday, 26 May 2021</summary>

### 10:00-12:00


- 60m Discussion of globals and guidance for future proposals (⌛️) Shu-yu Guo
- 5m **continuation** Resizable Buffers, Shu-yu Guo
- 5m Call for candidates: Security Task Group Chair position
- 30m Matrix / IRC
- 30m Meeting Scheduling
- 15m Incubation call chartering

### lunch (60 minutes)

### 13:00-15:00

- 🔒 60m Realms for Stage 3 Leo Balter, Caridy Patiño, Rick Waldron
- 🔒 40m RegExp Unicode set notation + properties of strings for Stage 2 Mathias Bynens & Markus Scherer


</details>


***

## Overflow

### From agenda

### Timebox overrun

## Schedule constraints

- Mathias Bynens and Markus Scherer are presenting the RegExp Unicode proposal.
  - ✓ Markus is available Tue 10-15 PT, Wed 12-15 PT.
  - Mathias wrote that he is only available between 12:00–13:00 PST on Wednesday May 26th. Double-check?
- ✓ Frank Yung-Fong Tang is NOT available in the morning of Wednesday May 26th.
- ✓ Caridy and Rick Waldron both available in the mornings halves each day.
- ✓ Michael Saboff will only be available Wednesday May 26th. He wants to be present for the RegExp Unicode proposal and if possible the Realms proposal.
- X JWK would prefer the Realms proposal be presented on the first or last hour of the day.
- ~~X Caio Lima and Daniel Ehrenberg are not available Wednesday May 26th from 13:00 to 14:00 PDT. They want to be present for Realms proposal presentation.~~ (Realms champions clarified)
- Realms champions have a hard requirement that realms is presented between 13:00 to 14:00 PST.
- ✓ Justin Grant is presenting Temporal update (15 mins) but is NOT available after 13:00 PDT either day

A note from Aki: Scheduling changes outside of the control of the champion group for Realms has led to a move to the afternoon. Despite it conflicting with very nearly every line of the above constraints, after a flurry of texts it sounds like 13:00 Wednesday is going to work for almost everyone. JWK I'm so sorry I was not able to accomodate.


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