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Agenda for the 90th meeting of Ecma TC39

  • Dates and times:
    • 10:00 to 15:00 CDT (America/Chicago) on June 6th, 2022
    • 10:00 to 15:00 CDT (America/Chicago) on June 7th, 2022
    • 10:00 to 15:00 CDT (America/Chicago) on June 8th, 2022
    • 10:00 to 15:00 CDT (America/Chicago) on June 9th, 2022
  • Location: Remote
  • Attendee information: Reflector Post

For meeting times in your timezone, visit Temporal docs and run the code below in the devtools console.

Temporal.ZonedDateTime.from('2022-06-06T10:00[America/Chicago]')
  .withTimeZone(Temporal.Now.timeZone()) // your time zone
  .toLocaleString()

Background:

Agenda topic rules

Deadline for advancement eligibility: May 27th, 10:00 CDT

  • Note: this time is selected to be precisely 10 days prior to the start of the meeting
  1. Proposals not looking to advance may be added at any time; if after the deadline, please always use a pull request so that members are notified of changes. Note: an unmerged PR counts as ”added” for the purposes of this requirement.
  2. Proposals seeking feedback at stage 0 must be added (and noted as such) prior to the deadline, or else delegates may object to advancement solely on the basis of missing the deadline.
    1. Such proposals should include supporting materials when possible.
  3. Proposals looking to advance to stage 1 must be added (and noted as such) prior to the deadline, or else delegates may object to advancement solely on the basis of missing the deadline.
    1. Such proposals must link to a proposal repository and they should link to supporting materials when possible.
  4. Proposals looking to advance to stages 2, 3, or 4 must be added (and noted as such) along with the necessary materials prior to the deadline, or else delegates may object to advancement solely on the basis of missing the deadline.
    1. Such proposals must link to supporting materials prior to the deadline, or else delegates may object to advancement solely on the basis of missing the deadline. If these materials change substantially after the deadline, the proposal may be disqualified from advancement, based on the committee’s judgment.
    2. Proposals looking to advance to stage 4 must link to a pull request into the spec, since the process requires one.
  5. Proposal-based agenda items should be sorted primarily by stage (descending), secondarily by timebox (ascending), and finally by insertion date.

Supporting materials includes slides, a link to the proposal repository, a link to spec text, etc.; essentially, anything you are planning to present to the committee, or that would be useful for delegates to review.

Agenda items

  1. Opening, welcome and roll call (Chair)

    1. Opening of the meeting
    2. TC39 follows its Code of Conduct
    3. Introduction of attendees
    4. Host facilities, local logistics
    5. Quick recap of meeting IPR policy
    6. Overview of communication tools

  2. Find volunteers for note taking

  3. Adoption of the agenda

  4. Approval of the minutes from last meeting

  5. Next meeting host and logistics

  6. Secretary's Report (15m, Istvan Sebestyen) https://github.com/tc39/agendas/blob/HEAD/2022/tc39-2022-022_draft.pdf

  7. Project Editors’ Reports

    1. ECMA262 Status Updates (slides) (15m)
    2. ECMA402 Status Updates (15m)
    3. ECMA404 Status Updates (15m)
    4. Test262 Status Updates (slides) (15m)

  8. Updates from the CoC Committee (15m)

  9. Web compatibility issues / Needs Consensus PRs

    ✓ timebox topic presenter
    25m What did we decide for #1556? I don't remember. :( Shu-yu Guo
    30m Where do you get your default time zone? (slides) Richard Gibson
    45m Remove Job from Promise Resolve Functions (slides) Justin Ridgewell

  10. Overflow from previous meeting

    ✓ timebox topic presenter

  11. Incubation call chartering (15m on the last day)

  12. Short (≤30m) Timeboxed Discussions

    ✓ timebox topic presenter

  13. Proposals

    ✓ represents an agenda item which has been presented, and does not indicate stage advancement

    ✓ stage timebox topic presenter
    3 10m Array Grouping rename groupBy to group Justin Ridgewell
    3 10m findLast/findLastIndex for stage 4 (slides) Daniel Rosenwasser
    3 10m ⏳ Decorators Normative Change: Flexible Initializers (slides) Kristen Hewell Garrett
    3 15m ShadowRealm: Implementation Status and normative updates, (slides TBD) Leo Balter, Rick Waldron, Caridy Patiño, John-David Dalton
    3 30m Errors across the ShadowRealm boundary Shu-yu Guo
    3 30m Temporal normative changes (slides) Ujjwal Sharma
    3 10m Making TypedArray.prototype.with simpler in the change Array by copy proposal (issue) Shu-yu Guo
    3 30m ⏳ Intl.DurationFormat stage 3 update (slides) Ujjwal Sharma
    2 30m Symbols as WeakMap keys for stage 3 [spec] [slides] [diff] Ashley Claymore, Robin Ricard
    2 30m function.sent update slides HE Shi-Jun
    2 30m RegExp Modifiers for Stage 3? (spec, slides, pending reviews) Ron Buckton
    2 30m JSON.parse source text access for Stage 3 (spec, slides) Richard Gibson
    1 30m String.dedent for stage 2 (draft spec, slides) Justin Ridgewell
    1 60m Grouped and Auto-Accessors for stage 2 (draft spec, slides) Ron Buckton
    1 60m Import Reflection status update & discussion (slides) Guy Bedford & Luca Casonato
    0 30m Duplicate named capture groups for stage 1, 2, or 3 Kevin Gibbons
    0 30m this parameter for Stage 1, slides HE Shi-Jun
    0 60m RegExp Atomic Operators for Stage 1 (draft spec, slides) Ron Buckton

  14. Longer or open-ended discussions

    ✓ timebox topic presenter

  15. Overflow from timeboxed agenda items (in insertion order)

    ✓ topic presenter

  16. Other business

    1. Thank host

  17. Adjournment

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 Array Grouping, findLast, Symbols as WeakMap keys, function.sent, RegExp Modifiers, JSON.parse source text access, dedent, auto-accessors, Duplicate Named Capture Groups, Fatal Errors
  • Michael Saboff (Apple) will not be available the second half of June 6th.

Dates and locations of future meetings

Dates Location
2022-07-18 to 2022-07-21 San Francisco, CA
2022-09-13 to 2022-09-16 Tokyo, Japan