Repositories list

• dataset

  Public
  The automatic track tc39 proposals

  tc39

  TypeScript

  •

  The Unlicense

  •13•46•2•0•Updated Oct 21, 2025Oct 21, 2025

• proposal-inspector

  Public
  ECMAScript Proposal, specs, and reference implementation for Inspector

  MIT License

  •1•5•1•2•Updated Oct 20, 2025Oct 20, 2025

• ecma262

  Public
  Status, process, and documents for ECMA-262

  javascriptecmascript

  HTML

  •

  Other

  •1.4k•16k•355•128•Updated Oct 20, 2025Oct 20, 2025

• proposal-temporal

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

  HTML

  •

  Other

  •172•3.6k•33•6•Updated Oct 20, 2025Oct 20, 2025

• ecma426

  Public
  Source map specification, RFCs and new proposals.

  JavaScript

  •

  Other

  •22•170•62•7•Updated Oct 20, 2025Oct 20, 2025

• agendas

  Public
  TC39 meeting agendas

  JavaScript

  •199•1.2k•0•5•Updated Oct 17, 2025Oct 17, 2025

• test262

  Public
  Official ECMAScript Conformance Test Suite

  javascriptjstests+ 1tc39

  JavaScript

  •

  Other

  •504•2.6k•208•62•Updated Oct 17, 2025Oct 17, 2025

• tc39.github.io

  Public
  Get involved in specifying JavaScript

  HTML

  •

  MIT License

  •64•332•27•1•Updated Oct 16, 2025Oct 16, 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

  •8•4•12•2•Updated Oct 16, 2025Oct 16, 2025

• proposal-await-dictionary

  Public
  A proposal to add Promise.allKeyed to ECMAScript

  JavaScript

  •

  MIT License

  •6•93•7•1•Updated Oct 15, 2025Oct 15, 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•60•1•1•Updated Oct 14, 2025Oct 14, 2025

• ecma402

  Public
  Status, process, and documents for ECMA 402

  HTML

  •

  Other

  •113•583•157•12•Updated Oct 13, 2025Oct 13, 2025

• proposal-Declarations-in-Conditionals

  Public
  JavaScript

  •4•101•9•0•Updated Oct 13, 2025Oct 13, 2025

• proposal-error-capturestacktrace

  Public
  Standardizing Error.captureStackTrace

  MIT License

  •3•8•3•1•Updated Oct 9, 2025Oct 9, 2025

• proposal-async-context

  Public
  Async Context for JavaScript

  javascript

  HTML

  •

  Creative Commons Zero v1.0 Universal

  •24•773•22•6•Updated Oct 7, 2025Oct 7, 2025

• proposal-pattern-matching

  Public
  Pattern matching syntax for ECMAScript

  HTML

  •

  MIT License

  •90•5.7k•24•0•Updated Oct 5, 2025Oct 5, 2025

• notes

  Public
  TC39 meeting notes

  JavaScript

  •126•689•1•7•Updated Oct 3, 2025Oct 3, 2025

• proposal-upsert

  Public
  ECMAScript Proposal, specs, and reference implementation for Map.prototype.upsert

  MIT License

  •23•314•5•0•Updated Oct 2, 2025Oct 2, 2025

• proposals

  Public
  Tracking ECMAScript Proposals

  javascriptlanguageproposal+ 5ecmascriptspecspecificationlanguage-designcommittee

  739•19k•6•4•Updated Oct 2, 2025Oct 2, 2025

• proposal-composites

  Public
  TypeScript

  •

  MIT License

  •6•223•20•0•Updated Oct 2, 2025Oct 2, 2025

• source-map-tests

  Public
  JavaScript

  •

  Other

  •10•10•7•1•Updated Oct 1, 2025Oct 1, 2025

• proposal-iterator-chunking

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

  JavaScript

  •1•82•1•0•Updated Sep 29, 2025Sep 29, 2025

• how-we-work

  Public
  Documentation of how TC39 operates and how to participate

  28•212•21•10•Updated Sep 25, 2025Sep 25, 2025

• proposal-amount

  Public
  Numbers with precision and a unit for JavaScript

  javascriptunits-of-measurenumbers+ 3accuracymeasurementsprecision

  HTML

  •

  MIT License

  •5•35•30•2•Updated Sep 24, 2025Sep 24, 2025

• proposal-import-bytes

  Public
  A modest proposal for importing bytes in javascript

  JavaScript

  •

  MIT License

  •4•56•3•1•Updated Sep 24, 2025Sep 24, 2025

• proposal-nonextensible-applies-to-private

  Public
  Proposal to disallow adding new private fields to non-extensible objects

  JavaScript

  •

  MIT License

  •0•8•2•0•Updated Sep 22, 2025Sep 22, 2025

• proposal-immutable-arraybuffer

  Public
  A TC39 proposal for immutable ArrayBuffers

  JavaScript

  •

  MIT License

  •4•31•7•0•Updated Sep 20, 2025Sep 20, 2025

• .github

  Public
  5•4•0•0•Updated Sep 18, 2025Sep 18, 2025

• ecmarkup

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

  HTML

  •

  MIT License

  •75•233•97•10•Updated Sep 16, 2025Sep 16, 2025

• proposal-joint-iteration

  Public
  a TC39 proposal to synchronise the advancement of multiple iterators

  TypeScript

  •3•95•0•0•Updated Sep 15, 2025Sep 15, 2025