---
# System prepended metadata

title: 90th meeting of TC39

---

# 90th meeting of TC39

- Video call: https://meetings.igalia.com/tc39plenary
- TCQ: https://tcq.app/meeting/vmCV
- Hallway track: https://hubs.mozilla.com/oAAvRHu/tc39
- Agenda: https://github.com/tc39/agendas/blob/main/2022/06.md
- Reflector: https://github.com/tc39/Reflector/issues/430

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

<details closed>

<summary>10:00 to 15:00 CDT (America/Chicago) on 6 June 2022</summary>

### 10:00-12:00
    
- Opening & Welcome (Ujjwal)
- Volunteers for note-taking
- Adoption of the agenda
- Approval of the minutes from last meeting
- 15m Secretary's Report
- 15m ECMA262 Status Updates
- 15m ECMA402 Status Updates
- 15m ECMA404 Status Updates
- 15m Test262 Status Updates
- Updates from the CoC Committee
- 25m	| What did we decide for [#1556](https://github.com/tc39/ecma262/pull/1556)? I don't remember. :(	| Shu-yu Guo
- 45m	| Remove Job from Promise Resolve Functions | Justin Ridgewell
    
### lunch (60 minutes)



### 13:00-15:00

- 30m	  | Where do you get your default time zone? | Richard Gibson
- 10m	  | Array Grouping rename groupBy to group	| Justin Ridgewell
- 10m	  | findLast/findLastIndex for stage 4 | Daniel Rosenwasser
- 15m     | ShadowRealm: Implementation Status and normative updates | Leo Balter, Rick Waldron, Caridy Patiño, John-David Dalton
- 30m     | [Temporal](https://tc39.es/proposal-temporal/) [normative changes](https://github.com/tc39/proposal-temporal/pulls?q=is%3Aopen+is%3Apr+milestone%3A%22Next+batch+of+normative+changes%22) ([slides](http://ptomato.name/talks/tc39-2022-06/)) | Ujjwal Sharma
- 30m	  | Errors across the ShadowRealm boundary | Shu-yu Guo
- 30m     | [Duplicate named capture groups](https://github.com/bakkot/proposal-duplicate-named-capturing-groups) for stage 1, 2, or 3 | Kevin Gibbons
- 10m ⏳	 | Decorators Normative Change: Flexible Initializers | Chris Hewell Garrett

</details>

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

<details closed>

<summary>CDT (America/Chicago) on 7 June 2022</summary>

### 10:00-12:00
    
- 30m     | [String.dedent](https://github.com/tc39/proposal-string-dedent) for stage 2  | Justin Ridgewell
- 30m     | [JSON.parse source text access](https://github.com/tc39/proposal-json-parse-with-source) for Stage 3 | Richard Gibson
- 60m     | [Grouped and Auto-Accessors](https://github.com/tc39/proposal-grouped-and-auto-accessors) for stage 2 | Ron Buckton
- 30m 🔒  | [Symbols as WeakMap keys](https://github.com/tc39/proposal-symbols-as-weakmap-keys) for stage 3 | Ashley Claymore, Robin Ricard
- 10m     | Making `TypedArray.prototype.with` simpler in the change Array by copy proposal ([issue](https://github.com/tc39/proposal-change-array-by-copy/issues/85)) | Shu-yu Guo
- 8m      | Continuation: [Duplicate named capture groups](https://github.com/bakkot/proposal-duplicate-named-capturing-groups) for stage 1, 2, or 3 | Kevin Gibbons
    
### lunch (60 minutes)

### 13:00-15:00

- 30m ⏳  | `Intl.DurationFormat` stage 3 update | Ujjwal Sharma
- 30m     | [function.sent](https://github.com/tc39/proposal-function.sent) update | HE Shi-Jun
- 30m     | [RegExp Modifiers](https://github.com/tc39/proposal-regexp-modifiers) for Stage 3? | Ron Buckton
- 30m     | [`this` parameter](https://github.com/hax/proposal-this-parameter) for Stage 1 | HE Shi-Jun 

</details>

## Day 3 ([notes](https://mths.be/tc39day3))

<details open>

<summary>CDT (America/Chicago) on 8 June 2022</summary>

### 10:00-12:00

- 60m     | [RegExp Atomic Operators](https://github.com/rbuckton/proposal-regexp-atomic-operators) for Stage 1 | Ron Buckton
- 60m     | [Import Reflection](https://github.com/tc39/proposal-import-reflection) status update & discussion | Guy Bedford & Luca Casonato
- 5m      | Chairs update on Meeting Scheduling | Rob Palmer


### lunch (60 minutes)

### 13:00-15:00

***(NO ITEMS CURRENTLY PLANNED)***

***(60 mins spare)***
    
</details>

## Day 4 ([notes](https://mths.be/tc39day4))

<details closed>

<summary>CDT (America/Chicago) on 9 June 2022</summary>

### 10:00-12:00
    
***(NO ITEMS CURRENTLY PLANNED)***

### lunch (60 minutes)

### 13:00-15:00
    
***(NO ITEMS CURRENTLY PLANNED)***

</details>

***

## Overflow

### From agenda

### Timebox overrun

## Schedule constraints

- Leo Balter (Salesforce) not available on June 8th and 9th. Not required but would like to attend any ShadowRealms topics and Symbols as WeakMap Keys for stage 3.
- Ashley Claymore (Bloomberg) (co-presenter for Symbols as WeakMap keys topic) not available on June 8th after 11:30 EDT.
- Jordan Harband (Coinbase) will not be available on June 8th after 2PM local time, and would prefer to be present for anything requesting advancement.
- Michael Saboff (Apple) will most likely not be available June 6th.

## Key

- ⏳ : late addition for stage advancement and schedule prioritization
- 🔒 : agenda item specifically placed to accommodate schedule constraints

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