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Ecma logo

Agenda for the 100th meeting of Ecma TC39

  • Host: ServiceNow
  • Dates and times:
    • 10:00 to 17:00 PST (America/Los_Angeles) on Tuesday 6 February 2024
    • 10:00 to 17:00 PST (America/Los_Angeles) on Wednesday 7 February 2024
    • 10:00 to 16:00 PST (America/Los_Angeles) on Thursday 8 February 2024
  • Location: San Diego, CA, USA
  • Attendee information: https://github.com/tc39/Reflector/issues/516
gantt
  1 month before the meeting: milestone, 2024-01-06 10:00-0800, 1m
  Proposal advancement deadline: milestone, 2024-01-27 10:00-0800, 1m
  Schedule constraint deadline: milestone, 2024-02-03 10:00-0800, 1m
  Day 1 : day1, 2024-02-06 10:00-0800, 7h
  Day 2 : day2, 2024-02-07 10:00-0800, 7h
  Day 3 : day3, 2024-02-08 10:00-0800, 6h
  todayMarker stroke-width:5px,stroke:#0f0,opacity:0.5
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For meeting times in your timezone, visit Temporal docs and run the code below in the devtools console.

Temporal.ZonedDateTime.from('2024-02-06T10:00[America/Los_Angeles]')
  .withTimeZone(Temporal.Now.timeZoneId()) // your time zone
  .toLocaleString()

Background:

Agenda topic rules

Deadline for advancement eligibility: January 27th, 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, 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 supporting 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)
    8. TC39 stenography support and legal disclaimer

  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) (slides)

  7. Project Editors’ Reports

    1. ECMA262 Status Updates (slides) NOTE: Cutting es2024! (15m)
    2. ECMA402 Status Updates (15m)
    3. ECMA404 Status Updates (15m)
    4. Test262 Status Updates (15m)

  8. Task Group Reports

    1. TG3: Security (5m)
    2. TG4: Source Maps (5m) (slides)

  9. Updates from the CoC Committee (5m)

  10. Web compatibility issues / Needs Consensus PRs

    ✓ timebox topic presenter
    10m needs consensus: tc39/process-document#38: refactor the proposal stages table for better communication Michael Ficarra
    10m Allow locale based ignorePunctuation default for Collator #833 Frank Yung-Fong Tang
    10m ApplyUnicodeExtensionToTag and ResolveLocale set the result record's internal slots to non-canonical values #846 Frank Yung-Fong Tang
    10m Allow Annex B scripts to start with --> (#3244) Nicolò Ribaudo
    30m Down with [[VarNames]] #3226 (slides) Shu-yu Guo

  11. Overflow from previous meeting

    ✓ timebox topic presenter

  12. Short (≤30m) Timeboxed Discussions

    ✓ timebox topic presenter
    5m status of the IEEE Software paper about TC39 (slides TBD) Mikhail Barash
    10m Ecma Recognition Awards Chris de Almeida, Samina Husain
    15m TG5 charter and chair(s) appointment (slides) Mikhail Barash
    30m Decorated Function Declarations and Hoisting (slides) Ron Buckton

  13. Proposals

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

    ✓ stage timebox topic presenter
    3 5m Set Methods bugfix and update Kevin Gibbons
    3 10m ArrayBuffer transfer for stage 4 (PR) Jordan Harband
    3 30m Intl.DurationFormat stage 3 update (slides TBD) Ben Allen
    3 45m Temporal update & proposed normative changes (slides) Philip Chimento
    2 30m ShadowRealms update (slides) Leo Balter
    2 45m RegExp.escape hex escape discussion + for stage 2.7 Jordan Harband
    2 60m Throw Expressions update or stage 2.7 (slides, spec: option 1/option 2) Ron Buckton
    2 60m Uint8Array Base64 for stages 2.7 and 3 (open issue, spec, tests, slides) Kevin Gibbons
    1 30m iterator sequencing for stage 2 (spec text, slides) Michael Ficarra
    1 30m joint iteration for stage 2 (spec text, slides) Michael Ficarra
    1 30m Extractors update (slides) Ron Buckton
    1 30m Math.sum for stage 2 (slides) Kevin Gibbons
    1 30m Promise.try for stage 2 Jordan Harband
    1 45m WasmGC shared memory proposal and shared structs proposal convergence update (slides) Shu-yu Guo
    1 60m Intl.MessageFormat update and discussion (slides) Eemeli Aro
    0 20m iterator unique for stage 1 (slides) Michael Ficarra
    0 30m iterator chunking for stage 1 (slides) Michael Ficarra
    0 30m Micro and mini waits in JS for stage 1 (slides) Shu-yu Guo
    0 30m Raw string literals for stage 1 (slides) HE Shi-Jun (hax)
    0 45m ESM Phase Imports for stage 1 (slides) Guy Bedford
    0 45m "Discard" (void) Bindings for stage 1 (slides) Ron Buckton
    0 60m Function and Object Literal Element Decorators for stage 1 (slides) Ron Buckton

  14. Longer or open-ended discussions

    ✓ timebox topic presenter
    30m Scrub Stage 1 proposals Daniel Ehrenberg
    45m Can we reach consensus on what is Consensus? (slides) Michael Saboff

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

    ✓ topic presenter

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

  17. Other business

    1. Thank host

  18. Adjournment

Schedule constraints

Schedule constraints should be supplied here as soon as possible, and at least three days before the meeting begins so that the Chairs can take them into account when preparing the schedule.

Normal Constraints

  • Function and Object Literal Element Decorators should come before Decorated Function Declarations and Hoisting as it establishes the context for the discussion. Decorated Function Declarations and Hoisting may be skipped if Function and Object Literal Element Decorators is not adopted at stage 1 — Ron Buckton
  • Guy Bedford will not be available after 12 noon on the afternoon of 8 Feb.
  • Jack Works: I'm interested in the following topics (from most important to least important): ESM Phase Imports, "Discard" (void) Bindings, Extractors update, Function and Object Literal Element Decorators, ShadowRealms, collecting user feedback on syntactic proposals, Throw Expressions and Decimal Decimal: Stage 1 update. I'm available on any day, but it is midnight for me. I prefer those topics to be continuously presented (no other topics in the middle). Those topics should not be presented earlier than the scheduled time if possible, otherwise, I may miss it.
  • Please don't schedule "Scrub Stage 1 proposals" with any seriousness; it's just something we can do on the fly if we have extra time at the end (which we usually do not).
  • Leo Balter and Caridy Patiño prefers discussing ShadowRealms on day 3 afternoon or day 2 afternoon. Might not be available for the morning of Day 3 (Thursday).

Late-breaking Schedule Constraints