Repositories list

• ecma262

  Public
  Status, process, and documents for ECMA-262

  javascriptecmascript

  javascriptecmascript

  HTML

  •

  Other

  •1.4k1.4k forks•16k16k stars•356356 issues•125125 pull requests•Updated Aug 27, 2026Aug 27, 2026

• agendas

  Public
  TC39 meeting agendas

  JavaScript

  •202202 forks•1.2k1.2k stars•11 issue•44 pull requests•Updated Aug 27, 2026Aug 27, 2026

• dataset

  Public
  The automatic track tc39 proposals

  tc39

  tc39

  TypeScript

  •

  The Unlicense

  •1313 forks•4949 stars•22 issues•00 pull requests•Updated Aug 27, 2026Aug 27, 2026

• proposal-json-parseimmutable

  Public
  JSON.parseImmutable for creating Records and Tuples from JSON strings

  HTML

  •

  MIT License

  •33 forks•4747 stars•44 issues•11 pull request•Updated Aug 26, 2026Aug 26, 2026

• proposal-Declarations-in-Conditionals

  Public
  JavaScript

  •33 forks•194194 stars•11 issue•00 pull requests•Updated Aug 26, 2026Aug 26, 2026

• proposal-Map-getAndDelete

  Public
  JavaScript

  •

  MIT License

  •00 forks•77 stars•22 issues•00 pull requests•Updated Aug 26, 2026Aug 26, 2026

• proposal-deferred-reexports

  Public
  MIT License

  •77 forks•6060 stars•77 issues•00 pull requests•Updated Aug 25, 2026Aug 25, 2026

• tc39.github.io

  Public
  Get involved in specifying JavaScript

  HTML

  •

  MIT License

  •6262 forks•335335 stars•2727 issues•55 pull requests•Updated Aug 25, 2026Aug 25, 2026

• test262

  Public
  Official ECMAScript Conformance Test Suite

  javascriptjstests+ 1

  javascriptjsteststc39

  JavaScript

  •

  Other

  •557557 forks•2.8k2.8k stars•210210 issues•109109 pull requests•Updated Aug 25, 2026Aug 25, 2026

• eshost

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

  JavaScript

  •

  Other

  •4545 forks•147147 stars•1212 issues•22 pull requests•Updated Aug 24, 2026Aug 24, 2026

• proposal-export-star-default

  Public
  Proposal to include default export in `export * from 'module'`

  JavaScript

  •

  MIT License

  •00 forks•1313 stars•22 issues•00 pull requests•Updated Aug 24, 2026Aug 24, 2026

• speccy

  Public
  Speccy - ECMAScript spec character picker

  TypeScript

  •

  MIT License

  •00 forks•00 stars•00 issues•00 pull requests•Updated Aug 24, 2026Aug 24, 2026

• ecmarkup

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

  TypeScript

  •

  MIT License

  •7979 forks•242242 stars•100100 issues•1616 pull requests•Updated Aug 23, 2026Aug 23, 2026

• proposal-amount

  Public
  Numbers with precision and a unit for JavaScript

  javascriptunits-of-measurenumbers+ 3

  javascriptunits-of-measurenumbersaccuracymeasurementsprecision

  HTML

  •

  MIT License

  •1212 forks•5656 stars•4949 issues•22 pull requests•Updated Aug 20, 2026Aug 20, 2026

• proposal-thenable-curtailment

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

  MIT License

  •22 forks•1616 stars•55 issues•00 pull requests•Updated Aug 20, 2026Aug 20, 2026

• ecma426

  Public
  Source map specification, RFCs and new proposals.

  JavaScript

  •

  Other

  •3131 forks•185185 stars•7777 issues•99 pull requests•Updated Aug 20, 2026Aug 20, 2026

• proposal-intl-keep-trailing-zeros

  Public
  JavaScript

  •

  MIT License

  •33 forks•44 stars•11 issue•00 pull requests•Updated Aug 19, 2026Aug 19, 2026

• proposal-composites

  Public
  TypeScript

  •

  MIT License

  •88 forks•286286 stars•2626 issues•00 pull requests•Updated Aug 18, 2026Aug 18, 2026

• ecma402

  Public
  Status, process, and documents for ECMA 402

  HTML

  •

  Other

  •121121 forks•605605 stars•169169 issues•1616 pull requests•Updated Aug 17, 2026Aug 17, 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 Aug 14, 2026Aug 14, 2026

• proposal-fma

  Public
  Fused Multiply Add

  JavaScript

  •

  MIT License

  •22 forks•88 stars•33 issues•11 pull request•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

  •2323 forks•320320 stars•77 issues•11 pull request•Updated Aug 11, 2026Aug 11, 2026

• proposal-iterator-includes

  Public
  Array.prototype.includes but for iterators

  JavaScript

  •33 forks•1212 stars•11 issue•00 pull requests•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

  •22 forks•1616 stars•11 issue•00 pull requests•Updated Aug 8, 2026Aug 8, 2026

• notes

  Public
  TC39 meeting notes

  JavaScript

  •130130 forks•714714 stars•11 issue•77 pull requests•Updated Aug 7, 2026Aug 7, 2026

• proposals

  Public
  Tracking ECMAScript Proposals

  javascriptlanguageproposal+ 5

  javascriptlanguageproposalecmascriptspecspecificationlanguage-designcommittee

  750750 forks•19k19k stars•44 issues•55 pull requests•Updated Aug 4, 2026Aug 4, 2026

• proposal-temporal

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

  HTML

  •

  Other

  •177177 forks•3.7k3.7k stars•2020 issues•55 pull requests•Updated Jul 27, 2026Jul 27, 2026

• proposal-private-declarations

  Public
  A proposal to allow trusted code _outside_ of the class lexical scope to access private state

  HTML

  •

  MIT License

  •22 forks•2626 stars•1313 issues•11 pull request•Updated Jul 24, 2026Jul 24, 2026

• proposal-intl-datetime-alignment

  Public
  A TC39 proposal to align Intl.DateTimeFormat options with other standards

  00 forks•11 star•33 issues•00 pull requests•Updated Jul 24, 2026Jul 24, 2026

• proposal-error-code-property

  Public
  JavaScript

  •

  MIT License

  •11 fork•3838 stars•44 issues•00 pull requests•Updated Jul 22, 2026Jul 22, 2026