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Agenda for the 87th meeting of Ecma TC39

  • Host: TBD
  • Dates and times:
    • 10:00 to 15:00 PST (America/Los_Angeles) on December 14th, 2021
    • 10:00 to 15:00 PST (America/Los_Angeles) on December 15th, 2021
  • Location: Remote
  • Attendee information: https://github.com/tc39/Reflector/issues/402

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

Temporal.ZonedDateTime.from('2021-12-14T10:00[America/Los_Angeles]')
  .withTimeZone(Temporal.Now.timeZone()) // your time zone
  .toLocaleString()

Background:

Agenda topic rules

Deadline for advancement eligibility: December 4th, 2021 10:00 PST

  • 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/2021/tc39-2021-060.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 (15m)

  8. Updates from the CoC Committee (15m)

  9. Web compatibility issues / Needs Consensus PRs

    ✓ timebox topic presenter
    20m Add import.meta[Symbol.toStringTag] Jordan Harband
    20m Promise.prototype.finally should use onFinally's realm for newly creating functions Jordan Harband
    30m Unblocking tc39/ecma262#2515 and other RegExp Unicode update PRs (slides) Michael Ficarra

  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 ShadowRealms updates and potential normative changes (Slides) Caridy Patiño, Leo Balter, Rick Waldron
    3 20m Extend TimeZoneName Option Proposal for Stage 4 (Spec, Stage4PR, Slides) Frank Yung-Fong Tang
    3 20m Intl DisplayNames v2 for Stage 4 (Spec, Stage4PR, Slides) Frank Yung-Fong Tang
    3 20m Intl Enumeration API (Spec, Slides) Update in Stage 3 Frank Yung-Fong Tang
    3 20m Intl Locale Info API (Spec, Slides) Update in Stage 3 Frank Yung-Fong Tang
    3 30m Temporal update and normative changes (slides) Philip Chimento
    2 10m Array Grouping for Stage 3 (Criteria) Justin Ridgewell
    2 15m Destructuring Private Fields Status Update (slides) Justin Ridgewell
    2 15m Decorators: Updates to @init (Slides) Kristen Hewell Garrett
    2 30m RegExp set notation + Unicode properties of strings ready for Stage 3 reviews (slides, PR, spec preview with inline diffs) Markus Scherer and Mathias Bynens
    2 60m Records and Tuples: design space for referencing objects (slides) Nicolò Ribaudo, Rick Button, Robin Ricard
    1 15m RegExp \R Escape for Stage 2 (slides) Ron Buckton
    1 30m Decimal Stage 1 Update (Slides) Sarah Groff Hennigh-Palermo
    1 30m RegExp Modifiers for Stage 2 (slides) Ron Buckton
    1 30m RegExp Buffer Boundaries for Stage 2 (slides) Ron Buckton
    1 30m Array.fromAsync for Stage 2 (Slides) J. S. Choi
    0 30m Intl.Segmenter v2 for Stage 1 (Slides) Frank Yung-Fong Tang

  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

  • Robin Ricard (Records and Tuples) will be only be available in the morning (10:00-12:00) of both days
  • Nicolò Ribaudo prefers to discuss Records and Tuples in the first day, and if it's not possible prefers to discuss R&T in the first hour (10:00-11:00) of the second day.
  • Frank Yung-Fong Tang is NOT available 10:00 to 12:50 PST on December 15th, 2021 and prefer to present all his topics on Dec 14th if possible.
  • Mathias Bynens and Markus Scherer (presenting RegExp set notation update) are only available on December 14th, 2021 between 11:00 and 13:00 PST. Mathias would also prefer to be present for Michael Ficarra’s RegExp+Unicode topic — if possible, please schedule this back-to-back. No worries if not.

Dates and locations of future meetings

Dates Location
2022-01-24 to 2022-01-27 Remote: "Seattle"
2022-03-28 to 2022-03-31 Remote: "NY"
2022-06-06 to 2022-06-09 Austin TX, US
2022-07-18 to 2022-07-21 Remote: "SF"
2022-09-13 to 2022-09-16 Tokyo, Japan