Repositories list

• dataset

  Public
  The automatic track tc39 proposals

  tc39

  tc39

  TypeScript

  •

  The Unlicense

  •1212 forks•4747 stars•22 issues•00 pull requests•Updated Jun 13, 2026Jun 13, 2026

• tc39.github.io

  Public
  Get involved in specifying JavaScript

  HTML

  •

  MIT License

  •6363 forks•333333 stars•2727 issues•66 pull requests•Updated Jun 12, 2026Jun 12, 2026

• proposal-async-context

  Public
  Async Context for JavaScript

  javascript

  javascript

  HTML

  •

  Creative Commons Zero v1.0 Universal

  •2828 forks•852852 stars•2323 issues•99 pull requests•Updated Jun 12, 2026Jun 12, 2026

• notes

  Public
  TC39 meeting notes

  JavaScript

  •127127 forks•710710 stars•11 issue•88 pull requests•Updated Jun 12, 2026Jun 12, 2026

• ecma402

  Public
  Status, process, and documents for ECMA 402

  HTML

  •

  Other

  •116116 forks•601601 stars•168168 issues•1414 pull requests•Updated Jun 11, 2026Jun 11, 2026

• proposal-comparisons

  Public
  ECMAScript Proposal, specs, and reference implementation for comparisons

  MIT License

  •11 fork•1717 stars•00 issues•22 pull requests•Updated Jun 11, 2026Jun 11, 2026

• ecma262

  Public
  Status, process, and documents for ECMA-262

  javascriptecmascript

  javascriptecmascript

  HTML

  •

  Other

  •1.4k1.4k forks•16k16k stars•361361 issues•120120 pull requests•Updated Jun 11, 2026Jun 11, 2026

• test262

  Public
  Official ECMAScript Conformance Test Suite

  javascriptjstests+ 1

  javascriptjsteststc39

  JavaScript

  •

  Other

  •543543 forks•2.8k2.8k stars•215215 issues•103103 pull requests•Updated Jun 11, 2026Jun 11, 2026

• proposal-iterator-chunking

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

  JavaScript

  •22 forks•101101 stars•00 issues•11 pull request•Updated Jun 10, 2026Jun 10, 2026

• proposal-decimal

  Public
  Built-in exact decimal numbers for JavaScript

  javascriptarithmeticdecimal+ 2

  javascriptarithmeticdecimalieee754decimal128

  HTML

  •1919 forks•627627 stars•5454 issues•00 pull requests•Updated Jun 9, 2026Jun 9, 2026

• ecmarkup

  Public
  An HTML superset/Markdown subset source format for ECMAScript and related specifications

  TypeScript

  •

  MIT License

  •7676 forks•242242 stars•9999 issues•1818 pull requests•Updated Jun 6, 2026Jun 6, 2026

• agendas

  Public
  TC39 meeting agendas

  JavaScript

  •200200 forks•1.2k1.2k stars•00 issues•33 pull requests•Updated Jun 5, 2026Jun 5, 2026

• how-we-work

  Public
  Documentation of how TC39 operates and how to participate

  3030 forks•220220 stars•2323 issues•1010 pull requests•Updated Jun 5, 2026Jun 5, 2026

• proposal-thenable-curtailment

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

  MIT License

  •22 forks•1515 stars•44 issues•00 pull requests•Updated Jun 4, 2026Jun 4, 2026

• speccy

  Public
  Speccy - ECMAScript spec character picker

  TypeScript

  •

  MIT License

  •00 forks•00 stars•00 issues•00 pull requests•Updated Jun 4, 2026Jun 4, 2026

• proposal-amount

  Public
  Numbers with precision and a unit for JavaScript

  javascriptunits-of-measurenumbers+ 3

  javascriptunits-of-measurenumbersaccuracymeasurementsprecision

  HTML

  •

  MIT License

  •1111 forks•5050 stars•4444 issues•22 pull requests•Updated Jun 4, 2026Jun 4, 2026

• proposal-await-dictionary

  Public
  A proposal to add Promise.allKeyed to ECMAScript

  JavaScript

  •

  MIT License

  •1010 forks•135135 stars•55 issues•00 pull requests•Updated Jun 3, 2026Jun 3, 2026

• proposal-atomics-microwait

  Public
  Micro waits in JS

  HTML

  •

  Other

  •22 forks•6363 stars•55 issues•11 pull request•Updated Jun 2, 2026Jun 2, 2026

• proposal-iterator-includes

  Public
  Array.prototype.includes but for iterators

  JavaScript

  •22 forks•1010 stars•00 issues•00 pull requests•Updated May 29, 2026May 29, 2026

• proposal-joint-iteration

  Public archive
  a TC39 proposal to synchronise the advancement of multiple iterators

  TypeScript

  •66 forks•118118 stars•11 issue•11 pull request•Updated May 29, 2026May 29, 2026

• eshost

  Public
  A uniform wrapper around a multitude of ECMAScript hosts. CLI: https://github.com/bterlson/eshost-cli

  JavaScript

  •

  Other

  •4444 forks•146146 stars•1212 issues•11 pull request•Updated May 29, 2026May 29, 2026

• ecma426

  Public
  Source map specification, RFCs and new proposals.

  JavaScript

  •

  Other

  •2828 forks•185185 stars•7171 issues•77 pull requests•Updated May 27, 2026May 27, 2026

• proposal-stable-formatting

  Public
  A TC-39 proposal to bring stable Intl-inspired formatting options to ECMAScript

  HTML

  •33 forks•1414 stars•1414 issues•22 pull requests•Updated May 27, 2026May 27, 2026

• proposal-import-text

  Public
  A TC39 proposal for importing text

  22 forks•4848 stars•11 issue•00 pull requests•Updated May 27, 2026May 27, 2026

• proposals

  Public
  Tracking ECMAScript Proposals

  javascriptlanguageproposal+ 5

  javascriptlanguageproposalecmascriptspecspecificationlanguage-designcommittee

  745745 forks•19k19k stars•33 issues•44 pull requests•Updated May 26, 2026May 26, 2026

• source-map-tests

  Public
  JavaScript

  •

  Other

  •1111 forks•1212 stars•88 issues•00 pull requests•Updated May 25, 2026May 25, 2026

• tg5

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

  55 forks•2626 stars•2828 issues•00 pull requests•Updated May 22, 2026May 22, 2026

• proposal-temporal

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

  HTML

  •

  Other

  •176176 forks•3.7k3.7k stars•1919 issues•55 pull requests•Updated May 21, 2026May 21, 2026

• proposal-esm-phase-imports

  Public
  HTML

  •

  MIT License

  •33 forks•5353 stars•44 issues•33 pull requests•Updated May 21, 2026May 21, 2026

• proposal-regexp-buffer-boundaries

  Public
  Regular Expression Buffer Boundaries for ECMAScript

  HTML

  •

  BSD 3-Clause "New" or "Revised" License

  •22 forks•1212 stars•66 issues•00 pull requests•Updated May 21, 2026May 21, 2026