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@tc39 Ecma TC39

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    334 repositories

    • dataset

      Public
      The automatic track tc39 proposals
      tc39
      tc39
      TypeScript
      •
      The Unlicense
      •12•47•2•0•Updated Jul 27, 2026Jul 27, 2026

    • ecma262

      Public
      Status, process, and documents for ECMA-262
      javascriptecmascript
      javascriptecmascript
      HTML
      •
      Other
      •1.4k•16k•355•126•Updated Jul 26, 2026Jul 26, 2026

    • proposal-composites

      Public
      TypeScript
      •
      MIT License
      •7•271•23•1•Updated Jul 26, 2026Jul 26, 2026

    • tc39.github.io

      Public
      Get involved in specifying JavaScript
      HTML
      •
      MIT License
      •62•335•27•5•Updated Jul 25, 2026Jul 25, 2026

    • proposal-private-declarations

      Public
      A proposal to allow trusted code _outside_ of the class lexical scope to access private state
      HTML
      •
      MIT License
      •2•26•13•1•Updated Jul 24, 2026Jul 24, 2026

    • test262

      Public
      Official ECMAScript Conformance Test Suite
      javascriptjstests
      javascriptjsteststc39
      JavaScript
      •
      Other
      •549•2.8k•214•107•Updated Jul 24, 2026Jul 24, 2026

    • proposal-fma

      Public
      Fused Multiply Add
      JavaScript
      •
      MIT License
      •1•5•2•0•Updated Jul 24, 2026Jul 24, 2026

    • proposals

      Public
      Tracking ECMAScript Proposals
      javascriptlanguageproposal
      javascriptlanguageproposalecmascriptspecspecificationlanguage-designcommittee
      750•19k•4•4•Updated Jul 24, 2026Jul 24, 2026

    • proposal-intl-datetime-alignment

      Public
      A TC39 proposal to align Intl.DateTimeFormat options with other standards
      0•1•2•0•Updated Jul 24, 2026Jul 24, 2026

    • agendas

      Public
      TC39 meeting agendas
      JavaScript
      •201•1.2k•1•3•Updated Jul 24, 2026Jul 24, 2026

    • tg5

      Public
      TC39-TG5: Experiments in programming language standardization. https://ecma-international.org/task-groups/tc39-tg5/
      5•26•28•0•Updated Jul 23, 2026Jul 23, 2026

    • ecmarkup

      Public
      An HTML superset/Markdown subset source format for ECMAScript and related specifications
      TypeScript
      •
      MIT License
      •78•242•98•15•Updated Jul 23, 2026Jul 23, 2026

    • ecma402

      Public
      Status, process, and documents for ECMA 402
      HTML
      •
      Other
      •119•606•168•15•Updated Jul 23, 2026Jul 23, 2026

    • speccy

      Public
      Speccy - ECMAScript spec character picker
      TypeScript
      •
      MIT License
      •0•0•0•0•Updated Jul 23, 2026Jul 23, 2026

    • ecma426

      Public
      Source map specification, RFCs and new proposals.
      JavaScript
      •
      Other
      •30•185•73•8•Updated Jul 23, 2026Jul 23, 2026

    • proposal-error-code-property

      Public
      JavaScript
      •
      MIT License
      •1•34•4•0•Updated Jul 22, 2026Jul 22, 2026

    • proposal-thenable-curtailment

      Public
      A proposal to curtail the power of "thenable" objects.
      MIT License
      •2•16•5•0•Updated Jul 22, 2026Jul 22, 2026

    • proposal-await-dictionary

      Public
      A proposal to add Promise.allKeyed to ECMAScript
      JavaScript
      •
      MIT License
      •10•142•1•0•Updated Jul 21, 2026Jul 21, 2026

    • proposal-defer-import-eval

      Public
      A proposal for introducing a way to defer evaluate of a module
      HTML
      •
      MIT License
      •22•315•10•1•Updated Jul 21, 2026Jul 21, 2026

    • proposal-bigint-from-exponential

      Public
      A TC39 proposal for creating bigints from exponential-notation strings
      JavaScript
      •
      MIT License
      •0•0•3•0•Updated Jul 20, 2026Jul 20, 2026

    • notes

      Public
      TC39 meeting notes
      JavaScript
      •129•712•1•6•Updated Jul 20, 2026Jul 20, 2026

    • proposal-intl-sequence-units

      Public
      Support for CLDR mixed units, like "5ft 6in"
      JavaScript
      •
      MIT License
      •0•1•6•0•Updated Jul 16, 2026Jul 16, 2026

    • proposal-amount

      Public
      Numbers with precision and a unit for JavaScript
      javascriptunits-of-measurenumbers
      javascriptunits-of-measurenumbersaccuracymeasurementsprecision
      HTML
      •
      MIT License
      •12•54•49•3•Updated Jul 15, 2026Jul 15, 2026

    • proposal-Declarations-in-Conditionals

      Public
      JavaScript
      •3•191•7•0•Updated Jul 10, 2026Jul 10, 2026

    • proposal-regexp-buffer-boundaries

      Public
      Regular Expression Buffer Boundaries for ECMAScript
      HTML
      •
      BSD 3-Clause "New" or "Revised" License
      •2•12•6•0•Updated Jul 10, 2026Jul 10, 2026

    • proposal-intl-keep-trailing-zeros

      Public
      JavaScript
      •
      MIT License
      •3•3•1•0•Updated Jul 9, 2026Jul 9, 2026

    • proposal-Map-getAndDelete

      Public
      JavaScript
      •
      MIT License
      •0•5•2•0•Updated Jul 9, 2026Jul 9, 2026

    • proposal-linear-matching

      Public
      exploring features for RegExp matching with performance guarantees
      0•7•0•0•Updated Jul 9, 2026Jul 9, 2026

    • proposal-deferred-reexports

      Public
      MIT License
      •6•56•8•2•Updated Jul 8, 2026Jul 8, 2026

    • proposal-intl-locale-info

      Public
      An API to expose information of locale, such as week data ( first day of a week, weekend start, weekend end), hour cycle, measurement system, commonly used cale…
      HTML
      •
      MIT License
      •15•61•1•0•Updated Jul 6, 2026Jul 6, 2026
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