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@tc39 Ecma TC39

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    337 repositories

    • tc39.github.io

      Public
      Get involved in specifying JavaScript
      HTML
      •
      MIT License
      •62•336•27•8•Updated Sep 7, 2026Sep 7, 2026

    • eshost

      Public
      A uniform wrapper around a multitude of ECMAScript hosts. CLI: https://github.com/bterlson/eshost-cli
      JavaScript
      •
      Other
      •45•147•12•2•Updated Sep 7, 2026Sep 7, 2026

    • proposal-amount

      Public
      Numbers with precision and a unit for JavaScript
      javascriptunits-of-measurenumbers
      javascriptunits-of-measurenumbersaccuracymeasurementsprecision
      HTML
      •
      MIT License
      •12•57•46•2•Updated Sep 7, 2026Sep 7, 2026

    • dataset

      Public
      The automatic track tc39 proposals
      tc39
      tc39
      TypeScript
      •
      The Unlicense
      •14•50•2•0•Updated Sep 7, 2026Sep 7, 2026

    • tg5

      Public
      TC39-TG5: Experiments in programming language standardization. https://ecma-international.org/task-groups/tc39-tg5/
      5•26•28•0•Updated Sep 6, 2026Sep 6, 2026

    • ecma262

      Public
      Status, process, and documents for ECMA-262
      javascriptecmascript
      javascriptecmascript
      HTML
      •
      Other
      •1.4k•16k•356•121•Updated Sep 6, 2026Sep 6, 2026

    • agendas

      Public
      TC39 meeting agendas
      JavaScript
      •203•1.2k•1•4•Updated Sep 5, 2026Sep 5, 2026

    • proposal-esm-phase-imports

      Public
      HTML
      •
      MIT License
      •3•53•4•4•Updated Sep 5, 2026Sep 5, 2026

    • proposal-composites

      Public
      TypeScript
      •
      MIT License
      •10•292•26•0•Updated Sep 4, 2026Sep 4, 2026

    • proposal-json-parseimmutable

      Public
      JSON.parseImmutable for creating Records and Tuples from JSON strings
      HTML
      •
      MIT License
      •3•47•6•0•Updated Sep 3, 2026Sep 3, 2026

    • proposal-Declarations-in-Conditionals

      Public
      JavaScript
      •3•194•1•0•Updated Sep 3, 2026Sep 3, 2026

    • test262

      Public
      Official ECMAScript Conformance Test Suite
      javascriptjstests
      javascriptjsteststc39
      JavaScript
      •
      Other
      •562•2.8k•213•112•Updated Sep 3, 2026Sep 3, 2026

    • ecmarkup

      Public
      An HTML superset/Markdown subset source format for ECMAScript and related specifications
      TypeScript
      •
      MIT License
      •79•244•99•16•Updated Sep 2, 2026Sep 2, 2026

    • notes

      Public
      TC39 meeting notes
      JavaScript
      •131•715•1•8•Updated Sep 2, 2026Sep 2, 2026

    • proposal-object-pick-or-omit

      Public
      Ergonomic Dynamic Object Restructuring.
      HTML
      •
      MIT License
      •5•97•4•2•Updated Sep 2, 2026Sep 2, 2026

    • data

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

    • proposals

      Public
      Tracking ECMAScript Proposals
      javascriptlanguageproposal
      javascriptlanguageproposalecmascriptspecspecificationlanguage-designcommittee
      751•19k•4•3•Updated Sep 1, 2026Sep 1, 2026

    • proposal-thenable-curtailment

      Public
      A proposal to curtail the power of "thenable" objects.
      MIT License
      •2•16•6•0•Updated Sep 1, 2026Sep 1, 2026

    • ecma426

      Public
      Source map specification, RFCs and new proposals.
      JavaScript
      •
      Other
      •31•185•75•7•Updated Aug 31, 2026Aug 31, 2026

    • speccy

      Public
      Speccy - ECMAScript spec character picker
      TypeScript
      •
      MIT License
      •0•0•0•0•Updated Aug 31, 2026Aug 31, 2026

    • proposal-Map-getAndDelete

      Public
      JavaScript
      •
      MIT License
      •0•7•2•0•Updated Aug 26, 2026Aug 26, 2026

    • proposal-deferred-reexports

      Public
      MIT License
      •7•60•7•0•Updated Aug 25, 2026Aug 25, 2026

    • proposal-export-star-default

      Public
      Proposal to include default export in `export * from 'module'`
      JavaScript
      •
      MIT License
      •0•13•2•0•Updated Aug 24, 2026Aug 24, 2026

    • proposal-intl-keep-trailing-zeros

      Public
      JavaScript
      •
      MIT License
      •3•4•1•0•Updated Aug 19, 2026Aug 19, 2026

    • ecma402

      Public
      Status, process, and documents for ECMA 402
      HTML
      •
      Other
      •120•609•170•18•Updated Aug 17, 2026Aug 17, 2026

    • proposal-fma

      Public
      Fused Multiply Add
      JavaScript
      •
      MIT License
      •2•9•4•1•Updated Aug 12, 2026Aug 12, 2026

    • proposal-defer-import-eval

      Public
      A proposal for introducing a way to defer evaluate of a module
      HTML
      •
      MIT License
      •23•320•7•1•Updated Aug 11, 2026Aug 11, 2026

    • proposal-iterator-includes

      Public
      Array.prototype.includes but for iterators
      JavaScript
      •3•12•1•0•Updated Aug 8, 2026Aug 8, 2026

    • proposal-iterator-join

      Public
      JS proposal for a means to concatenate the contents of an iterator into a string
      JavaScript
      •
      MIT License
      •2•16•1•0•Updated Aug 8, 2026Aug 8, 2026

    • proposal-temporal

      Public
      Provides standard objects and functions for working with dates and times.
      HTML
      •
      Other
      •177•3.7k•20•5•Updated Jul 27, 2026Jul 27, 2026
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