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@tc39 Ecma TC39

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    338 repositories

    • dataset

      Public
      The automatic track tc39 proposals
      tc39
      tc39
      TypeScript
      •
      The Unlicense
      •15•50•2•1•Updated Oct 5, 2026Oct 5, 2026

    • ecma262

      Public
      Status, process, and documents for ECMA-262
      javascriptecmascript
      javascriptecmascript
      HTML
      •
      Other
      •1.4k•16k•356•126•Updated Oct 3, 2026Oct 3, 2026

    • tc39.github.io

      Public
      Get involved in specifying JavaScript
      HTML
      •
      MIT License
      •63•336•16•1•Updated Oct 3, 2026Oct 3, 2026

    • agendas

      Public
      TC39 meeting agendas
      JavaScript
      •202•1.2k•1•3•Updated Oct 2, 2026Oct 2, 2026

    • speccy

      Public
      Speccy - ECMAScript spec character picker
      TypeScript
      •
      MIT License
      •0•0•0•0•Updated Oct 2, 2026Oct 2, 2026

    • proposal-amount

      Public
      Numbers with precision and a unit for JavaScript
      javascriptunits-of-measurenumbers
      javascriptunits-of-measurenumbersaccuracymeasurementsprecision
      HTML
      •
      MIT License
      •12•61•48•7•Updated Oct 2, 2026Oct 2, 2026

    • proposal-frozen-json-modules

      Public
      Proposal for `with { type: "json", freeze: true }`
      JavaScript
      •
      MIT License
      •0•0•0•0•Updated Oct 1, 2026Oct 1, 2026

    • proposals

      Public
      Tracking ECMAScript Proposals
      javascriptlanguageproposal
      javascriptlanguageproposalecmascriptspecspecificationlanguage-designcommittee
      749•19k•4•3•Updated Oct 1, 2026Oct 1, 2026

    • proposal-thenable-curtailment

      Public
      A proposal to curtail the power of "thenable" objects.
      MIT License
      •2•16•6•0•Updated Sep 30, 2026Sep 30, 2026

    • proposal-export-star-default

      Public
      Proposal to include default export in `export * from 'module'`
      JavaScript
      •
      MIT License
      •0•17•2•0•Updated Sep 30, 2026Sep 30, 2026

    • proposal-intl-sequence-units

      Public
      Support for CLDR mixed units, like "5ft 6in"
      JavaScript
      •
      MIT License
      •1•1•7•1•Updated Sep 30, 2026Sep 30, 2026

    • data

      Public
      TC39's source of truth for programmatically available process/proposal data.
      JavaScript
      •
      MIT License
      •0•3•1•1•Updated Sep 30, 2026Sep 30, 2026

    • proposal-deferred-reexports

      Public
      MIT License
      •7•63•6•0•Updated Sep 29, 2026Sep 29, 2026

    • proposal-intl-unit-protocol

      Public
      TC39 proposal for adding units to format functions
      JavaScript
      •
      MIT License
      •0•8•3•0•Updated Sep 29, 2026Sep 29, 2026

    • proposal-esm-phase-imports

      Public
      HTML
      •
      MIT License
      •4•53•5•4•Updated Sep 29, 2026Sep 29, 2026

    • proposal-fma

      Public
      Fused Multiply Add
      JavaScript
      •
      MIT License
      •2•9•3•0•Updated Sep 29, 2026Sep 29, 2026

    • tg5

      Public
      TC39-TG5: Experiments in programming language standardization. https://ecma-international.org/task-groups/tc39-tg5/
      5•26•28•0•Updated Sep 29, 2026Sep 29, 2026

    • ecma426

      Public
      Source map specification, RFCs and new proposals.
      JavaScript
      •
      Other
      •31•188•73•8•Updated Sep 28, 2026Sep 28, 2026

    • source-map-tests

      Public
      JavaScript
      •
      Other
      •11•12•8•0•Updated Sep 28, 2026Sep 28, 2026

    • proposal-bigint-from-exponential

      Public
      A TC39 proposal for creating bigints from exponential-notation strings
      JavaScript
      •
      MIT License
      •1•3•4•0•Updated Sep 27, 2026Sep 27, 2026

    • test262

      Public
      Official ECMAScript Conformance Test Suite
      javascriptjstests
      javascriptjsteststc39
      JavaScript
      •
      Other
      •568•2.8k•213•111•Updated Sep 23, 2026Sep 23, 2026

    • ecma402

      Public
      Status, process, and documents for ECMA 402
      HTML
      •
      Other
      •120•609•173•19•Updated Sep 23, 2026Sep 23, 2026

    • ecma404

      Public
      Status, process, and documents for ECMA 404
      HTML
      •2•2•0•0•Updated Sep 23, 2026Sep 23, 2026

    • ecmarkup

      Public
      An HTML superset/Markdown subset source format for ECMAScript and related specifications
      TypeScript
      •
      MIT License
      •78•244•101•19•Updated Sep 22, 2026Sep 22, 2026

    • eshost

      Public
      A uniform wrapper around a multitude of ECMAScript hosts. CLI: https://github.com/bterlson/eshost-cli
      JavaScript
      •
      Other
      •45•147•12•3•Updated Sep 21, 2026Sep 21, 2026

    • notes

      Public
      TC39 meeting notes
      JavaScript
      •130•715•2•6•Updated Sep 21, 2026Sep 21, 2026

    • proposal-defer-import-eval

      Public
      A proposal for introducing a way to defer evaluate of a module
      HTML
      •
      MIT License
      •23•322•9•1•Updated Sep 21, 2026Sep 21, 2026

    • proposal-json-parseimmutable

      Public
      JSON.parseImmutable for creating Records and Tuples from JSON strings
      HTML
      •
      MIT License
      •4•51•2•0•Updated Sep 18, 2026Sep 18, 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•15•0•Updated Sep 15, 2026Sep 15, 2026

    • proposal-immutable-arraybuffer

      Public
      A TC39 proposal for immutable ArrayBuffers
      JavaScript
      •
      MIT License
      •7•38•7•0•Updated Sep 12, 2026Sep 12, 2026
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