# 85th meeting of TC39

- TCQ: https://tcq.app/meeting/s33V
- Hallway track: https://hubs.mozilla.com/oAAvRHu/tc39
- Agenda: https://github.com/tc39/agendas/blob/master/2021/08.md
- Reflector: https://github.com/tc39/Reflector/issues/388

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

<details>

<summary>10:00 to 15:00 EDT (UTC-4) on 31 August, 2021</summary>

### 10:00-12:00

- Fastest intro ever
- Editor reports, maybe
- [ECMA262](https://github.com/tc39/ecma262) Status Updates
- [ECMA402](https://github.com/tc39/ecma402) Status Updates?
- 10m [mark `with` as Legacy](https://github.com/tc39/ecma262/pull/2441) | Jordan Harband or Michael Ficarra
- 10m [Relative indexing `.at()` method](https://github.com/tc39/proposal-relative-indexing-method) for Stage 4 | Shu-yu Guo
- 10m [Accessible Object hasOwnProperty](https://github.com/tc39/proposal-accessible-object-hasownproperty) for Stage 4 | Jamie Kyle
- 10m [Class `static` initialization blocks](https://github.com/tc39/proposal-class-static-block) for Stage 4 ([spec](https://arai-a.github.io/ecma262-compare/?pr=2440)) | Ron Buckton
- 30m [Change Array by copy](https://github.com/tc39/proposal-change-array-by-copy) for Stage 2 | Robin Ricard & Ashley Claymore
- 45m [`Intl.DurationFormat`](https://github.com/tc39/proposal-intl-duration-format) update | Ujjwal Sharma
- 15m [Report for the Realms Official Renaming Bikeshed Thread](https://github.com/tc39/proposal-realms/issues/321#issuecomment-900523250) | Leo Balter
- 30m | [Pipeline operator](https://github.com/js-choi/proposal-hack-pipes/) for Stage 2 | Tab Atkins-Bitter, J. S. Choi

### lunch (60 minutes)

### 13:00-15:00

- 3-5m [Iterator Helpers Blitz Update](https://github.com/tc39/proposal-iterator-helpers) (towards stage 3) | Yulia Startsev
- 60m IETF Update & Normative PRs for [Temporal](https://github.com/tc39/proposal-temporal) | Ujjwal Sharma & Philip Chimento
- 🔒 45m [RegExp set notation + Unicode properties of strings](https://github.com/tc39/proposal-regexp-set-notation) update Mathias Bynens
- 15m | [String is USV String](https://github.com/guybedford/proposal-is-usv-string) for Stage 1 | Guy Bedford & Bradley Farias
- 30m | [`Array.asyncFrom`](https://github.com/js-choi/proposal-array-async-from) for Stage 1 | J. S. Choi
- 5m [`continue` labels should not pass through blocks](https://github.com/tc39/ecma262/pull/2482) | Kevin Gibbons
- 10m | [Realm for error for tail-called revoked proxies](https://github.com/tc39/ecma262/pull/2495) | Kevin Gibbons

</details>

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

<details open>

<summary>10:00 to 15:00 EDT (UTC-4) on 01 September, 2021</summary>

### 10:00-12:00

- 60m | Response to ECMA / LF Proposed Partnership | Michael Saboff
- 30m | [BigInt Math](https://github.com/js-choi/proposal-bigint-math) for Stage 1 | J. S. Choi
- 30m | [Get Intrinsic](https://github.com/ljharb/proposal-get-intrinsic) for Stage 1 or 2 | Jordan Harband

### lunch (60 minutes)

### 13:00-15:00

- 60m | [RegExp Feature Parity](https://github.com/rbuckton/proposal-regexp-features) for Stage 1 | Ron Buckton
- 45m | [Fixed shape objects](https://github.com/syg/proposal-structs/) for Stage 1 | Shu-yu Guo
- 5m | ⌛ [Small resizable buffers bounds checking update](https://github.com/tc39/proposal-resizablearraybuffer/issues/68) | Shu-yu Guo
- 5m | [Ecma/LF letter](https://github.com/tc39/Reflector/issues/397) | Yulia Startsev
- 5m | Incubation Chartering | Shu-yu Guo

</details>

***

## Overflow

### From agenda

- 60m | Tightening host restrictions to improve testing ([example](https://github.com/tc39/test262/pull/3054#issuecomment-882741949)) | Jordan Harband |
- 30m | [Extending `null`](https://github.com/tc39/ecma262/pull/1321) | Gus Caplan
- 30m | Taking over maintainership of structured clone | Shu-yu Guo |

### Timebox overrun

## Schedule constraints

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