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Agenda for the 85th meeting of Ecma TC39

Background:

Agenda topic rules

Deadline for advancement eligibility: August 21st, 2021, 10:00 ET

  • 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.
  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/tc39-2021-045.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
    10m mark with as Legacy Jordan Harband or Michael Ficarra
    5m continue labels should not pass through blocks Kevin Gibbons
    10m Realm for error for tail-called revoked proxies (slides) Kevin Gibbons

  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
    15m Report for the Realms Official Renaming Bikeshed Thread (slides) Leo Balter

  13. Proposals

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

    ✓ stage timebox topic presenter
    3 10m Relative indexing .at() method for Stage 4 (slides) Shu-yu Guo
    3 10m Accessible Object hasOwnProperty for Stage 4 (spec, slides) Jamie Kyle
    3 10m Class static initialization blocks for Stage 4 (spec) Ron Buckton
    3 10m ⌛ Small resizable buffers bounds checking update Shu-yu Guo
    3 60m IETF Update & Normative PRs for Temporal (slides) Ujjwal Sharma & Philip Chimento
    2 3-5m Iterator Helpers Blitz Update (towards stage 3) Yulia Startsev
    2 45m RegExp set notation + Unicode properties of strings update (slides) Mathias Bynens
    2 45m Intl.DurationFormat update (slides) Ujjwal Sharma
    1 30m Change Array by copy for Stage 2 (spec, slides) Robin Ricard & Ashley Claymore
    1 30m Pipeline operator for Stage 2 (spec, slides) Tab Atkins-Bitter, J. S. Choi
    0 15m String is USV String for Stage 1 (slides) Guy Bedford & Bradley Farias
    0 30m Array.asyncFrom for Stage 1 (spec, slides) J. S. Choi
    0 30m BigInt Math for Stage 1 (spec, slides) J. S. Choi
    0 30m Get Intrinsic for Stage 1 or 2 (initial spec) Jordan Harband
    0 45m Fixed shape objects for Stage 1 (slides) Shu-yu Guo
    0 60m RegExp Feature Parity for Stage 1 (slides) Ron Buckton

  14. Longer or open-ended discussions

    ✓ timebox topic presenter
    60m Response to ECMA / LF Proposed Partnership (slides) Michael Saboff
    60m Tightening host restrictions to improve testing (example) Jordan Harband
    30m Extending null (slides) Gus Caplan
    30m Taking over maintainership of structured clone (slides) Shu-yu Guo

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

    ✓ topic presenter

  16. Other business

    1. Thank host

  17. Adjournment

Schedule constraints

  • Please schedule the “RegExp set notation” update within the last two hours on the first day, i.e. somewhere between 13:00–15:00 ET on August 31st, 2021.
  • Kevin Gibbons' needs-consensus PRs are low priority; it's fine if they end up overflowing to next meeting.
  • Adam Klein would like to be able to attend "Fixed shape objects" but is unavailable during the 13:00-14:00 hour. If it could be swapped with "RegExp set notation" that would be appreciated.

Dates and locations of future meetings

Dates Location
2021-10-25 to 2021-10-28 "London?", BST
2021-12-14 to 2021-12-15 Remote: PST "Los Angeles"