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    • proposal-is-error

      Public
      ECMAScript Proposal, specs, and reference implementation for Error.isError
      HTML
      •
      MIT License
      •2•100•3•0•Updated Jan 9, 2025Jan 9, 2025

    • how-we-work

      Public
      Documentation of how TC39 operates and how to participate
      26•205•20•9•Updated Jan 9, 2025Jan 9, 2025

    • test262

      Public
      Official ECMAScript Conformance Test Suite
      jsteststc39javascript
      JavaScript
      •
      Other
      •472•2.4k•205•53•Updated Jan 9, 2025Jan 9, 2025

    • ecma262

      Public
      Status, process, and documents for ECMA-262
      javascriptecmascript
      HTML
      •
      Other
      •1.3k•15k•327•129•Updated Jan 9, 2025Jan 9, 2025

    • dataset

      Public
      The automatic track tc39 proposals
      tc39
      TypeScript
      •
      The Unlicense
      •7•40•2•0•Updated Jan 9, 2025Jan 9, 2025

    • agendas

      Public
      TC39 meeting agendas
      JavaScript
      •188•1.1k•0•1•Updated Jan 8, 2025Jan 8, 2025

    • tc39.github.io

      Public
      Get involved in specifying JavaScript
      HTML
      •
      MIT License
      •60•321•26•0•Updated Jan 8, 2025Jan 8, 2025

    • ecma426

      Public
      Source map specification, RFCs and new proposals.
      Bikeshed
      •
      Other
      •17•136•56•6•Updated Jan 7, 2025Jan 7, 2025

    • proposal-immutable-arraybuffer

      Public
      A TC39 proposal for immutable ArrayBuffers
      JavaScript
      •
      MIT License
      •1•17•6•1•Updated Jan 1, 2025Jan 1, 2025

    • proposal-signals

      Public
      A proposal to add signals to JavaScript.
      MIT License
      •63•3.5k•111•14•Updated Jan 1, 2025Jan 1, 2025

    • proposal-esm-phase-imports

      Public
      HTML
      •
      MIT License
      •1•41•5•1•Updated Dec 30, 2024Dec 30, 2024

    • proposal-source-phase-imports

      Public
      Proposal to enable importing modules at the source phase
      javascriptproposaltc39
      HTML
      •
      MIT License
      •8•141•4•0•Updated Dec 30, 2024Dec 30, 2024

    • proposal-stabilize

      Public
      Proposal for tc39 of new integrity "level" protecting against both override mistakes and proxy reentrancy
      JavaScript
      •
      Apache License 2.0
      •0•11•3•0•Updated Dec 23, 2024Dec 23, 2024

    • ecma402

      Public
      Status, process, and documents for ECMA 402
      HTML
      •
      Other
      •108•550•145•7•Updated Dec 21, 2024Dec 21, 2024

    • notes

      Public
      TC39 meeting notes
      JavaScript
      •112•648•1•8•Updated Dec 20, 2024Dec 20, 2024

    • tg3

      Public
      TC39-TG3: Security
      2•13•0•1•Updated Dec 20, 2024Dec 20, 2024

    • 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 calendar, etc.
      HTML
      •
      MIT License
      •13•58•7•2•Updated Dec 19, 2024Dec 19, 2024

    • proposal-compartments

      Public
      Compartmentalization of host behavior hooks for JS
      HTML
      •
      MIT License
      •11•124•21•2•Updated Dec 19, 2024Dec 19, 2024

    • template-for-proposals

      Public template
      A template for ECMAScript proposals
      MIT License
      •29•136•3•1•Updated Dec 18, 2024Dec 18, 2024

    • proposal-structs

      Public
      JavaScript Structs: Fixed Layout Objects
      HTML
      •11•642•30•3•Updated Dec 17, 2024Dec 17, 2024

    • process-document

      Public
      Document describing the process for making changes to ECMA-262
      HTML
      •18•30•5•3•Updated Dec 13, 2024Dec 13, 2024

    • proposal-import-attributes

      Public
      Proposal for syntax to import ES modules with assertions
      HTML
      •
      Apache License 2.0
      •27•602•32•0•Updated Dec 12, 2024Dec 12, 2024

    • proposal-decimal

      Public
      Built-in exact decimal numbers for JavaScript
      javascriptarithmeticdecimalieee754decimal128
      HTML
      •18•508•60•0•Updated Dec 11, 2024Dec 11, 2024

    • proposal-temporal

      Public
      Provides standard objects and functions for working with dates and times.
      HTML
      •
      Other
      •157•3.4k•31•7•Updated Dec 11, 2024Dec 11, 2024

    • test262-harness

      Public
      Experimental harness for test262
      JavaScript
      •
      BSD 3-Clause "New" or "Revised" License
      •47•86•13•0•Updated Dec 10, 2024Dec 10, 2024

    • proposal-defer-import-eval

      Public
      A proposal for introducing a way to defer evaluate of a module
      HTML
      •
      MIT License
      •12•225•9•2•Updated Dec 9, 2024Dec 9, 2024

    • proposal-iterator.range

      Public
      A proposal for ECMAScript to add a built-in Iterator.range()
      HTML
      •
      MIT License
      •13•499•3•0•Updated Dec 8, 2024Dec 8, 2024

    • proposal-import-sync

      Public
      MIT License
      •1•38•1•0•Updated Dec 5, 2024Dec 5, 2024

    • proposal-dynamic-code-brand-checks

      Public
      TC39 proposal that enables flexible brand checks before dynamic code loading
      HTML
      •
      MIT License
      •5•34•2•0•Updated Dec 5, 2024Dec 5, 2024

    • proposal-float16array

      Public
      a proposal to add float16 TypedArrays to JavaScript
      HTML
      •3•58•5•0•Updated Dec 5, 2024Dec 5, 2024