Repositories list

• agendas

  Public

  tc39/agendas’s past year of commit activity
  TC39 meeting agendas

  JavaScript

  •199•1.2k•0•3•Updated Nov 16, 2025Nov 16, 2025

• ecma262

  Public

  tc39/ecma262’s past year of commit activity
  Status, process, and documents for ECMA-262

  javascriptecmascript

  HTML

  •

  Other

  •1.4k•16k•353•123•Updated Nov 16, 2025Nov 16, 2025

• dataset

  Public

  tc39/dataset’s past year of commit activity
  The automatic track tc39 proposals

  tc39

  TypeScript

  •

  The Unlicense

  •12•45•2•0•Updated Nov 16, 2025Nov 16, 2025

• proposal-temporal

  Public

  tc39/proposal-temporal’s past year of commit activity
  Provides standard objects and functions for working with dates and times.

  HTML

  •

  Other

  •171•3.6k•34•9•Updated Nov 15, 2025Nov 15, 2025

• ecma426

  Public

  tc39/ecma426’s past year of commit activity
  Source map specification, RFCs and new proposals.

  JavaScript

  •

  Other

  •22•172•62•7•Updated Nov 14, 2025Nov 14, 2025

• test262

  Public
  Official ECMAScript Conformance Test Suite

  javascriptjstests+ 1tc39

  JavaScript

  •

  Other

  •512•2.6k•213•73•Updated Nov 14, 2025Nov 14, 2025

• tc39.github.io

  Public

  tc39/tc39.github.io’s past year of commit activity
  Get involved in specifying JavaScript

  HTML

  •

  MIT License

  •62•332•27•2•Updated Nov 14, 2025Nov 14, 2025

• proposal-await-dictionary

  Public

  tc39/proposal-await-dictionary’s past year of commit activity
  A proposal to add Promise.allKeyed to ECMAScript

  JavaScript

  •

  MIT License

  •7•96•7•1•Updated Nov 13, 2025Nov 13, 2025

• proposal-intl-era-monthcode

  Public

  tc39/proposal-intl-era-monthcode’s past year of commit activity
  To specify necessary details about era, eraYear and monthCode usage with Temporal for non-ISO calendars.

  HTML

  •

  MIT License

  •8•4•17•3•Updated Nov 13, 2025Nov 13, 2025

• proposal-amount

  Public

  tc39/proposal-amount’s past year of commit activity
  Numbers with precision and a unit for JavaScript

  javascriptunits-of-measurenumbers+ 3accuracymeasurementsprecision

  HTML

  •

  MIT License

  •5•37•31•3•Updated Nov 13, 2025Nov 13, 2025

• proposal-native-promise-predicate

  Public

  tc39/proposal-native-promise-predicate’s past year of commit activity
  ECMAScript Proposal and spec for exposing a native promise predicate

  JavaScript

  •

  MIT License

  •1•12•3•1•Updated Nov 13, 2025Nov 13, 2025

• proposal-native-promise-adoption

  Public
  ECMAScript Proposal for adopting native promise state

  JavaScript

  •

  MIT License

  •0•7•1•0•Updated Nov 13, 2025Nov 13, 2025

• proposals

  Public

  tc39/proposals’s past year of commit activity
  Tracking ECMAScript Proposals

  javascriptlanguageproposal+ 5ecmascriptspecspecificationlanguage-designcommittee

  739•19k•6•4•Updated Nov 13, 2025Nov 13, 2025

• ecmarkup

  Public

  tc39/ecmarkup’s past year of commit activity
  An HTML superset/Markdown subset source format for ECMAScript and related specifications

  HTML

  •

  MIT License

  •75•235•97•11•Updated Nov 12, 2025Nov 12, 2025

• proposal-error-stack-accessor

  Public

  tc39/proposal-error-stack-accessor’s past year of commit activity
  ECMAScript Proposal, specs, and reference implementation for Error.prototype.stack accessor

  MIT License

  •2•19•5•1•Updated Nov 12, 2025Nov 12, 2025

• proposal-async-context

  Public

  tc39/proposal-async-context’s past year of commit activity
  Async Context for JavaScript

  javascript

  HTML

  •

  Creative Commons Zero v1.0 Universal

  •24•784•23•5•Updated Nov 11, 2025Nov 11, 2025

• proposal-Declarations-in-Conditionals

  Public
  JavaScript

  •4•130•6•0•Updated Nov 11, 2025Nov 11, 2025

• proposal-intl-keep-trailing-zeros

  Public
  MIT License

  •1•3•2•2•Updated Nov 11, 2025Nov 11, 2025

• ecma402

  Public
  Status, process, and documents for ECMA 402

  HTML

  •

  Other

  •113•587•157•13•Updated Nov 7, 2025Nov 7, 2025

• notes

  Public

  tc39/notes’s past year of commit activity
  TC39 meeting notes

  JavaScript

  •126•693•1•7•Updated Nov 7, 2025Nov 7, 2025

• proposal-inspector

  Public
  ECMAScript Proposal, specs, and reference implementation for Inspector

  MIT License

  •1•6•1•0•Updated Nov 7, 2025Nov 7, 2025

• proposal-json-parse-with-source

  Public
  Proposal for extending JSON.parse to expose input source text.

  HTML

  •

  MIT License

  •10•252•6•0•Updated Nov 7, 2025Nov 7, 2025

• proposal-joint-iteration

  Public
  a TC39 proposal to synchronise the advancement of multiple iterators

  TypeScript

  •3•97•0•0•Updated Nov 4, 2025Nov 4, 2025

• proposal-iterator-sequencing

  Public
  a TC39 proposal to create iterators by sequencing existing iterators

  JavaScript

  •4•80•0•0•Updated Nov 3, 2025Nov 3, 2025

• proposal-thenable-curtailment

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

  MIT License

  •0•10•5•0•Updated Oct 29, 2025Oct 29, 2025

• tg5

  Public

  tc39/tg5’s past year of commit activity
  TC39-TG5: Experiments in programming language standardization. https://ecma-international.org/task-groups/tc39-tg5/

  3•26•28•0•Updated Oct 29, 2025Oct 29, 2025

• proposal-math-sum

  Public

  tc39/proposal-math-sum’s past year of commit activity
  TC39 proposal to add a summation method to JavaScript

  JavaScript

  •5•125•5•0•Updated Oct 28, 2025Oct 28, 2025

• proposal-arraybuffer-base64

  Public archive
  TC39 proposal for Uint8Array<->base64/hex

  HTML

  •

  MIT License

  •12•281•5•1•Updated Oct 28, 2025Oct 28, 2025

• how-we-work

  Public
  Documentation of how TC39 operates and how to participate

  30•213•22•10•Updated Oct 27, 2025Oct 27, 2025

• proposal-deferred-reexports

  Public
  MIT License

  •3•44•3•1•Updated Oct 26, 2025Oct 26, 2025