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Agenda for the 78th meeting of Ecma TC39

  • Host: Bloomberg
  • Dates and times:
    • 10:00 to 15:00 JST (UTC +9) on September 21st, 2020
    • 10:00 to 15:00 JST (UTC +9) on September 22nd, 2020
    • 10:00 to 15:00 JST (UTC +9) on September 23rd, 2020
    • 10:00 to 15:00 JST (UTC +9) on September 24th, 2020
  • Location: Remote (was Tokyo)
  • Attendee information: Reflector

Allen's paper on standards committee participation for new attendees: http://wirfs-brock.com/allen/files/papers/standpats-asianplop2016.pdf

Agenda topic rules

Deadline for advancement eligibility: September 11th, 2020, 10:00 JST

  • 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)tc39-2020-041.pdf

  7. Project Editors’ Reports

    1. ECMA262 Status Updates (slides) (15m)
    2. ECMA402 Status Updates (slides) (15m)
    3. ECMA404 Status Updates (15m)
    4. Test262 Status Updates (15m)
    5. Ecma TC53 Liason Report (10m)

  8. Updates from the CoC Committee (15m)

  9. Web compatibility issues / Needs Consensus PRs

    ✓ timebox topic presenter
    ✓ 10m Explicitly specify order of operations in MakeTime Kevin Gibbons
    ✓ 30m Move __proto__ out of annex B Gus Caplan
    ✓ 10m Specify order of name and length for built-in functions Kevin Gibbons
    ✓ 15m Align detached buffer semantics with web reality Ross Kirsling
    ✓ 15m Arbitrary Strings as export/import names Bradley Farias

  10. Overflow from previous meeting

    ✓ timebox topic presenter
    ✓ 30m Numeric literal suffixes update: separate namespace version (slides) Daniel Ehrenberg

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

  12. Short (≤30m) Timeboxed Discussions

    ✓ timebox topic presenter
    ✓ 15m Date arithmetic Kevin Gibbons
    ✓ 10m Move outreach groups to the TC39 org, like incubator calls? (slide) Daniel Ehrenberg
    ✓ 25m Process document clarifications Yulia Startsev
    ✓ 10m GetOption in ECMA-262 Philip Chimento
    ✓ 15m F.p.bind with infinite-length functions Kevin Gibbons

  13. Proposals

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

    ✓ stage timebox topic presenter
    ✓ 3 10m Status update for class fields, private methods, static class features (editorial: unified specification) (slides) Daniel Ehrenberg and Ujjwal Sharma
    ✓ 3 20m Intl.DisplayNames for Stage 4 (spec / slides / PR ) Frank Yung-Fong Tang
    ✓ 2 5m need another stage 3 reviewer for iterator helpers Michael Ficarra
    ✓ 2 15m .item() for Stage 3 (slides) Tab Atkins, Shu-yu Guo
    ✓ 2 30m Temporal Stage 2 update (slides) Ujjwal Sharma
    ✓ 2 30m Import Assertions for Stage 3 (slides) Sven Sauleau, Daniel Ehrenberg, Myles Borins, Dan Clark, Shu-yu Guo
    ✓ 2 30m JSON Modules update (slides) Sven Sauleau, Daniel Ehrenberg, Myles Borins, Dan Clark, Shu-yu Guo
    ✓ 2 30m Record & Tuple Stage 2 update (slides) Rick Button
    2 45m Ergonomic brand checks for private fields for stage 3 (issue) (Slides) Jordan Harband
    ✓ 2 60m Decorators: A new proposal iteration (PR) (slides) Kristen Hewell Garrett and Daniel Ehrenberg
    ✓ 1 30m Intl Enumeration API for stage 2 Frank Yung-Fong Tang
    ✓ 1 30m Class static initialization block for Stage 2 (spec, slides) Ron Buckton
    ✓ 1 30m Class Access Expressions for Stage 2 (spec, slides) Ron Buckton
    ✓ 1 60m Resizable and growable ArrayBuffers for Stage 2 (spec, slides) Shu-yu Guo
    ✓ 1 60m Builtin Modules for Stage 2 (spec, slides) Michael Saboff
    ✓ 1 5m 🕘 Withdrawing TypedArray stride Shu-yu Guo
    ✓ 0 15m Error Cause for Stage 1 (slides) Chengzhong Wu
    ✓ 0 20m Unused Function Parameters for stage 1 (slides) Gus Caplan
    ✓ 0 30m Standardized Debug for Stage 1 (slides) Gus Caplan
    ✓ 0 30m Intl.DisplayNames V2 for stage 1 (slides) Frank Yung-Fong Tang
    ✓ 0 30m Intl Locale Info for stage 1 Frank Yung-Fong Tang
    ✓ 0 30m String.dedent for stage 1 (slides) Hemanth HM
    ✓ 0 30m Modulus and Additional Integer Math for Stage 1 (slides) Peter Hoddie
    ✓ 0 15m Double-Ended Iterator and Destructuring for Stage 1 (slides) HE Shi-Jun
    0 45m Extensions for Stage 1 (slides WIP) HE Shi-Jun

  14. Longer or open-ended discussions

    ✓ timebox topic presenter
    ✓ 15m The last 5 years of Test262, a brief review Leo Balter
    ✓ 30m Conformance for enumerable options in 262 and 402 (ecma402#467, slides) Shane F. Carr
    ✓ 20m 🕘 Mechanisms to lighten the load on note-takers (issue, slides) Philip Chimento, Daniel Ehrenberg and Mark Miller
    20m 🕘 Supporting MDN's documentation about in TC39's output (issue, slides) Daniel Ehrenberg

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

    ✓ topic presenter

  16. Other business

    1. Thank host

  17. Adjournment

Schedule constraints

  • Yulia Startsev will only be available in the afternoon sessions (1pm-3pm local time).
  • Frank Yung-Fong Tang will only be available in the 2nd-4th day (September 22nd - 24th JST).
  • Ujjwal Sharma will not be available on the 22nd (second day).
  • Temporal should go on Day 3 or 4.

Presentations which can be deferred

Dates and locations of future meetings

Dates Location Host
2020-11-16 to 2020-11-19 Remote (was Budapest, Hungary) IBM
2021-01-25 to 2021-01-28 Remote