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Ecma logo

Agenda for the 97th meeting of Ecma TC39

  • Host: University of Bergen
  • Dates and times:
    • 10:00 to 16:15 CEST (Europe/Oslo) on 11 July 2023
    • 10:00 to 17:00 CEST (Europe/Oslo) on 12 July 2023
    • 10:00 to 16:00 CEST (Europe/Oslo) on 13 July 2023
  • Location: Bergen, Norway
  • Attendee information: https://github.com/tc39/Reflector/issues/473

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

Temporal.ZonedDateTime.from('2023-07-11T10:00[Europe/Oslo]')
  .withTimeZone(Temporal.Now.timeZoneId()) // your time zone
  .toLocaleString()

Background:

Agenda topic rules

Deadline for advancement eligibility: July 1st, 10:00 CEST

  • 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, as well as other normative changes to the standard or proposals in stage 3 or later looking to achieve consensus, must be added (and noted as such) along with links to the necessary materials prior to the deadline, or else delegates may withhold consensus for advancement solely on the basis of missing the deadline.
    1. If the supporting materials change substantially after the deadline, delegates may withhold consensus for advancement, based on the committee’s judgment.
    2. For urgent normative changes, the committee is expected to be more forgiving of a missed deadline, since there is generally less material to review than in a stage advancement.
    3. 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 key

When applicable, use these emoji as a prefix to the agenda item topic.

Emoji Meaning
❄️ hard schedule constraints apply to this agenda item (e.g. presenter)
🔒 schedule constraints apply to this agenda item
⌛️ late addition for stage advancement and/or schedule prioritization
🔁 continuation of a previous agenda item

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
    7. Reminder to review Github Delegate teams (Jordan Harband)

  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, Samina Husain, Istvan Sebestyen)(slides:https://github.com/tc39/agendas/blob/main/2023/tc39-2023-032_Final.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 and confirmation of new members (5m, Jordan Harband or Chris de Almeida)

  9. TG3 update and chair(s) appointment (slides) (10m, Chris de Almeida)

  10. TG4 charter and chair(s) appointment (15m, slides, Jonathan Kuperman)

  11. TC39 public calendar update (5m, Chris de Almeida)

  12. Web compatibility issues / Needs Consensus PRs

    ✓ timebox topic presenter
    5m needs consensus: ecma402#709 Read date-time options only once when creating DateTimeFormat objects Ujjwal Sharma
    5m needs consensus: ecma402#768 Reorder NF resolved option "roundingPriority" Ujjwal Sharma
    5m needs consensus: ecma402#783 Added support for sentence break suppressions to Intl.Segmenter Ujjwal Sharma
    5m needs consensus: ecma402#786 Raised minimum/maximum fractional digits from 20 to 100 Ujjwal Sharma

  13. Overflow from previous meeting

    ✓ timebox topic presenter

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

  15. Short (≤30m) Timeboxed Discussions

    ✓ timebox topic presenter

  16. Proposals

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

    ✓ stage timebox topic presenter
    3 10m Iterator Helpers: small optimisation to avoid String wrapper objects (PR) (slides) Michael Ficarra
    3 15m Import attributes updates (slides) Nicolò Ribaudo
    3 20m Set methods: deferring callability check (issue) / handling negative sizes (issue) Kevin Gibbons
    3 30m Resizable buffers bug fixes (#120, #126), grow refactor, then maybe for Stage 4 (slides) Shu-yu Guo
    3 30m Stage 3 update of Intl Locale Info API (Slides) Frank Yung-Fong Tang
    3 30m Temporal Stage 3 update and normative PRs (slides) Philip Chimento
    3 30m Stage 3 update for Intl.DurationFormat (Normative PRs) Ujjwal Sharma
    3 45m Explicit Resource Management Stage 3 update and normative PRs (spec, slides) Ron Buckton
    2 30m Array Grouping for stage 3 (spec, tests) Jordan Harband
    2 30m Promise.withResolvers for stage 3 (spec, slides) Peter Klecha
    2 30m Time Zone Canonicalization for stage 3 (spec, slides) Justin Grant
    2 45m Source Phase Imports for Stage 3 (spec, slides) Guy Bedford & Luca Casonato
    2 45m Base64 update (slides) Kevin Gibbons
    1 30m Integer and Modulus Math update (slides) Peter Hoddie, Patrick Soquet
    1 45m Deferred Import Evaluation for Stage 2 (slides, spec) Nicolò Ribaudo
    1 60m Decimal: Open-ended discussion (slides) Jesse Alama
    0 15m DataView get/set Uint8Clamped methods for stage 1 or 2 or 3 (spec) Jordan Harband
    0 25m Optional chaining in assignment LHS for stage 1 or 2 (spec, slides) Nicolò Ribaudo

  17. Longer or open-ended discussions

    ✓ timebox topic presenter
    30m Meta-review of Stage 3 proposals (Stage 3 slides, Stage 2 slides) Peter Klecha & Dan Ehrenberg
    45m reducing wasted effort due to proposal churn (slides) (warning: 🌶️ spicy) Michael Ficarra
    60m Stop coercing things (slides) (also 🌶️ spicy) Kevin Gibbons
    60m Using WebAssembly as a polyfill for ECMAScript proposals (especially those in ECMA-402 via ICU4X) (Slides) Shane F. Carr (prefer Wednesday or Thursday)

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

    ✓ topic presenter

  19. Other business

    1. Thank host

  20. Adjournment

Schedule constraints

Schedule constraints should be supplied here 48 hours before the meeting begins so that the Chairs can take them into account when preparing the schedule.

Normal Constraints

  • Jordan Harband will only be available the final two hours of each day, and will be presenting Array Grouping and DataView get/set methods; and would like to be present for Iterator Helpers, Set Methods, Promise withResolvers, Source Phase Imports, Deferred Import Evaluation, and Decimal. It'd be nice, but not required, to be present for the CoC and TG3 items.
  • Chris de Almeida will only be available starting at 13:00 CEST each day and will be presenting CoC, TG3, and Public Calendar; and would like to be present for TG4, Promise.withResolvers, Temporal, Time Zone Canonicalization, Optional chaining, reducing wasted effort due to proposal churn, and stop coercing things.
  • Peter Hoddie will only be available starting at 14:00 CEST each day and will be co-presenting Integer and Modulus Math.
  • Shu-yu Guo will be available starting at 13:00 CEST each day. Presenting resizable buffers. Would like to be present for Array Grouping, Decimal, Integer and Modulus Math, Promise.withResolvers, source phase imports, Base64, meta-review of Stage 3 proposals, reducing wasted effort, and Stop coercing things.
  • Frank Yung-Fong Tang will only be available 10:00 - noon CEST on July 12 and July 13 to present Stage 3 update of Intl Locale Info API.

Late-breaking Schedule Constraints

Dates and locations of future meetings

Dates Location Host
2023-09-26 to 2023-09-28 Tokyo, Japan Bloomberg
2023-11-27 to 2023-11-30 Remote: "SF"