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@tc39

Ecma TC39

Ecma International, Technical Committee 39 - ECMAScript

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  1. ecma262 ecma262 Public

    Status, process, and documents for ECMA-262

    HTML 15.4k 1.3k

  2. ecma402 ecma402 Public

    Status, process, and documents for ECMA 402

    HTML 581 111

  3. test262 test262 Public

    Official ECMAScript Conformance Test Suite

    JavaScript 2.6k 496

  4. proposals proposals Public

    Tracking ECMAScript Proposals

    18.9k 737

  5. agendas agendas Public

    TC39 meeting agendas

    JavaScript 1.1k 199

  6. notes notes Public

    TC39 meeting notes

    JavaScript 683 122

Repositories

Showing 10 of 307 repositories
  • dataset Public

    The automatic track tc39 proposals

    tc39/dataset’s past year of commit activity
    TypeScript 47 Unlicense 12 2 0 Updated Aug 7, 2025
  • tc39.github.io Public

    Get involved in specifying JavaScript

    tc39/tc39.github.io’s past year of commit activity
    HTML 333 MIT 63 27 (3 issues need help) 1 Updated Aug 7, 2025
  • ecma426 Public

    Source map specification, RFCs and new proposals.

    tc39/ecma426’s past year of commit activity
    JavaScript 159 22 61 4 Updated Aug 7, 2025
  • proposal-deferred-reexports Public
    tc39/proposal-deferred-reexports’s past year of commit activity
    32 MIT 3 0 0 Updated Aug 7, 2025
  • test262-harness Public

    Experimental harness for test262

    tc39/test262-harness’s past year of commit activity
    JavaScript 87 BSD-3-Clause 47 14 3 Updated Aug 7, 2025
  • proposal-intl-era-monthcode Public

    To specify necessary details about era, eraYear and monthCode usage with Temporal for non-ISO calendars.

    tc39/proposal-intl-era-monthcode’s past year of commit activity
    HTML 4 MIT 7 15 2 Updated Aug 6, 2025
  • proposal-temporal Public

    Provides standard objects and functions for working with dates and times.

    tc39/proposal-temporal’s past year of commit activity
    HTML 3,581 169 40 8 Updated Aug 4, 2025
  • proposal-import-bytes Public

    A modest proposal for importing bytes in javascript

    tc39/proposal-import-bytes’s past year of commit activity
    JavaScript 36 MIT 1 3 0 Updated Aug 1, 2025
  • proposal-object-property-count Public

    TC39 proposal for Object.propertyCount(target[, options])

    tc39/proposal-object-property-count’s past year of commit activity
    24 MIT 2 4 1 Updated Jul 31, 2025
  • test262 Public

    Official ECMAScript Conformance Test Suite

    tc39/test262’s past year of commit activity
    JavaScript 2,571 496 205 (4 issues need help) 64 Updated Jul 31, 2025
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