Repositories list

• proposal-temporal

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

  HTML

  •

  Other

  •167•3.6k•38•8•Updated Jul 7, 2025Jul 7, 2025

• proposal-pattern-matching

  Public
  Pattern matching syntax for ECMAScript

  HTML

  •

  MIT License

  •90•5.7k•25•0•Updated Jul 7, 2025Jul 7, 2025

• notes

  Public
  TC39 meeting notes

  JavaScript

  •122•677•1•7•Updated Jul 7, 2025Jul 7, 2025

• agendas

  Public
  TC39 meeting agendas

  JavaScript

  •198•1.1k•0•2•Updated Jul 7, 2025Jul 7, 2025

• proposal-intl-era-monthcode

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

  HTML

  •

  MIT License

  •6•4•10•0•Updated Jul 7, 2025Jul 7, 2025

• test262

  Public
  Official ECMAScript Conformance Test Suite

  jsteststc39+ 1javascript

  JavaScript

  •

  Other

  •496•2.5k•203•54•Updated Jul 7, 2025Jul 7, 2025

• ecma426

  Public
  Source map specification, RFCs and new proposals.

  JavaScript

  •

  Other

  •22•149•62•5•Updated Jul 7, 2025Jul 7, 2025

• dataset

  Public
  The automatic track tc39 proposals

  tc39

  TypeScript

  •

  The Unlicense

  •10•46•2•0•Updated Jul 7, 2025Jul 7, 2025

• proposal-thenable-curtailment

  Public
  A proposal to curtail the power of "thenable" objects.

  MIT License

  •0•10•2•0•Updated Jul 4, 2025Jul 4, 2025

• proposal-defer-import-eval

  Public
  A proposal for introducing a way to defer evaluate of a module

  HTML

  •

  MIT License

  •16•271•4•1•Updated Jul 4, 2025Jul 4, 2025

• proposal-measure

  Public
  MIT License

  •3•18•13•2•Updated Jul 4, 2025Jul 4, 2025

• tc39.github.io

  Public
  Get involved in specifying JavaScript

  HTML

  •

  MIT License

  •63•330•26•1•Updated Jul 3, 2025Jul 3, 2025

• proposal-decimal

  Public
  Built-in exact decimal numbers for JavaScript

  javascriptarithmeticdecimal+ 2ieee754decimal128

  HTML

  •20•553•52•1•Updated Jul 3, 2025Jul 3, 2025

• proposal-error-capturestacktrace

  Public
  Standardizing Error.captureStackTrace

  MIT License

  •2•8•2•1•Updated Jul 2, 2025Jul 2, 2025

• proposal-iterator-chunking

  Public
  a proposal to add a method to iterators for producing an iterator of its subsequences

  JavaScript

  •1•58•2•0•Updated Jul 1, 2025Jul 1, 2025

• proposal-async-context

  Public
  Async Context for JavaScript

  javascript

  HTML

  •

  Creative Commons Zero v1.0 Universal

  •22•718•22•5•Updated Jul 1, 2025Jul 1, 2025

• proposal-joint-iteration

  Public
  a TC39 proposal to synchronise the advancement of multiple iterators

  TypeScript

  •4•86•0•0•Updated Jul 1, 2025Jul 1, 2025

• ecma262

  Public
  Status, process, and documents for ECMA-262

  javascriptecmascript

  HTML

  •

  Other

  •1.3k•15k•341•133•Updated Jun 30, 2025Jun 30, 2025

• js-outreach-groups

  Public
  8•70•17•1•Updated Jun 25, 2025Jun 25, 2025

• proposals

  Public
  Tracking ECMAScript Proposals

  languageproposalspec+ 5specificationlanguage-designcommitteejavascriptecmascript

  734•19k•6•4•Updated Jun 23, 2025Jun 23, 2025

• proposal-iterator-sequencing

  Public
  a TC39 proposal to create iterators by sequencing existing iterators

  JavaScript

  •3•72•0•0•Updated Jun 20, 2025Jun 20, 2025

• tg5

  Public
  TC39-TG5: Experiments in programming language standardization. https://ecma-international.org/task-groups/tc39-tg5/

  3•24•28•0•Updated Jun 18, 2025Jun 18, 2025

• ecma402

  Public
  Status, process, and documents for ECMA 402

  HTML

  •

  Other

  •110•576•155•10•Updated Jun 14, 2025Jun 14, 2025

• proposal-random-functions

  Public
  Proposal to add a Random namespace and several additional convenience functions for using randomness.

  MIT License

  •3•88•11•0•Updated Jun 13, 2025Jun 13, 2025

• 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•59•1•1•Updated Jun 12, 2025Jun 12, 2025

• proposal-seeded-random

  Public
  Proposal for a new SeededPRNG class that yields reproducible sequences of random numbers.

  HTML

  •

  MIT License

  •6•187•3•0•Updated Jun 3, 2025Jun 3, 2025

• proposal-inspector

  Public
  ECMAScript Proposal, specs, and reference implementation for Inspector

  MIT License

  •0•4•1•0•Updated Jun 3, 2025Jun 3, 2025

• template-for-proposals

  Public template
  A template for ECMAScript proposals

  JavaScript

  •

  MIT License

  •31•145•2•2•Updated Jun 2, 2025Jun 2, 2025

• proposal-concurrency-control

  Public
  interfaces and data structures for concurrency control and integration into async iterator helpers

  TypeScript

  •0•39•9•1•Updated May 31, 2025May 31, 2025

• proposal-immutable-arraybuffer

  Public
  A TC39 proposal for immutable ArrayBuffers

  JavaScript

  •

  MIT License

  •3•29•6•0•Updated May 30, 2025May 30, 2025