Repositories list

• test262

  Public

  tc39/test262’s past year of commit activity
  Official ECMAScript Conformance Test Suite

  javascriptjstests+ 1

  javascriptjsteststc39

  JavaScript

  •

  Other

  •532•2.7k•213•90•Updated Mar 13, 2026Mar 13, 2026

• proposal-temporal

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

  HTML

  •

  Other

  •174•3.7k•16•5•Updated Mar 13, 2026Mar 13, 2026

• dataset

  Public

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

  tc39

  tc39

  TypeScript

  •

  The Unlicense

  •11•47•2•0•Updated Mar 13, 2026Mar 13, 2026

• proposal-typedarray-concat

  Public

  tc39/proposal-typedarray-concat’s past year of commit activity
  A proposal for optimizable TypedArray concatenation

  JavaScript

  •

  MIT License

  •0•5•5•1•Updated Mar 12, 2026Mar 12, 2026

• proposal-iterator-includes

  Public

  tc39/proposal-iterator-includes’s past year of commit activity
  Array.prototype.includes but for iterators

  JavaScript

  •1•7•3•0•Updated Mar 12, 2026Mar 12, 2026

• proposal-thenable-curtailment

  Public

  tc39/proposal-thenable-curtailment’s past year of commit activity
  A proposal to curtail the power of "thenable" objects.

  MIT License

  •1•13•8•1•Updated Mar 12, 2026Mar 12, 2026

• proposal-enum

  Public

  tc39/proposal-enum’s past year of commit activity
  Proposal for ECMAScript enums

  HTML

  •

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

  •9•481•10•3•Updated Mar 12, 2026Mar 12, 2026

• proposals

  Public

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

  javascriptlanguageproposal+ 5

  javascriptlanguageproposalecmascriptspecspecificationlanguage-designcommittee

  743•19k•3•3•Updated Mar 12, 2026Mar 12, 2026

• ecma426

  Public

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

  JavaScript

  •

  Other

  •25•183•63•13•Updated Mar 12, 2026Mar 12, 2026

• proposal-import-text

  Public
  A TC39 proposal for importing text

  0•29•1•0•Updated Mar 12, 2026Mar 12, 2026

• tc39.github.io

  Public
  Get involved in specifying JavaScript

  HTML

  •

  MIT License

  •61•331•28•3•Updated Mar 12, 2026Mar 12, 2026

• proposal-first-class-protocols

  Public
  a proposal to bring protocol-based interfaces to ECMAScript users

  HTML

  •

  MIT License

  •9•385•23•0•Updated Mar 11, 2026Mar 11, 2026

• ecma262

  Public
  Status, process, and documents for ECMA-262

  javascriptecmascript

  javascriptecmascript

  HTML

  •

  Other

  •1.4k•16k•355•116•Updated Mar 11, 2026Mar 11, 2026

• agendas

  Public
  TC39 meeting agendas

  JavaScript

  •201•1.2k•0•2•Updated Mar 11, 2026Mar 11, 2026

• proposal-typedarray-findwithin

  Public
  A proposal for searching for a subsequence within a TypedArray

  JavaScript

  •

  MIT License

  •0•10•7•1•Updated Mar 11, 2026Mar 11, 2026

• proposal-regexp-buffer-boundaries

  Public
  Regular Expression Buffer Boundaries for ECMAScript

  HTML

  •

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

  •2•10•3•0•Updated Mar 10, 2026Mar 10, 2026

• proposal-defer-import-eval

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

  HTML

  •

  MIT License

  •21•305•6•1•Updated Mar 10, 2026Mar 10, 2026

• proposal-cancellation

  Public

  tc39/proposal-cancellation’s past year of commit activity
  Proposal for a Cancellation API for ECMAScript

  javascriptproposalecmascript+ 1

  javascriptproposalecmascriptcancellation

  HTML

  •

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

  •7•272•11•0•Updated Mar 10, 2026Mar 10, 2026

• proposal-esm-phase-imports

  Public
  HTML

  •

  MIT License

  •2•53•4•5•Updated Mar 10, 2026Mar 10, 2026

• proposal-error-stack-accessor

  Public
  ECMAScript Proposal, specs, and reference implementation for Error.prototype.stack accessor

  MIT License

  •2•20•3•0•Updated Mar 10, 2026Mar 10, 2026

• proposal-intl-unit-protocol

  Public
  TC39 proposal for adding units to format functions

  JavaScript

  •

  MIT License

  •0•7•5•0•Updated Mar 10, 2026Mar 10, 2026

• proposal-amount

  Public
  Numbers with precision and a unit for JavaScript

  javascriptunits-of-measurenumbers+ 3

  javascriptunits-of-measurenumbersaccuracymeasurementsprecision

  HTML

  •

  MIT License

  •8•46•36•5•Updated Mar 10, 2026Mar 10, 2026

• proposal-await-dictionary

  Public
  A proposal to add Promise.allKeyed to ECMAScript

  JavaScript

  •

  MIT License

  •8•125•6•0•Updated Mar 8, 2026Mar 8, 2026

• ecmarkup

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

  TypeScript

  •

  MIT License

  •74•237•101•12•Updated Mar 6, 2026Mar 6, 2026

• proposal-intl-era-monthcode

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

  HTML

  •

  MIT License

  •10•7•3•1•Updated Mar 5, 2026Mar 5, 2026

• notes

  Public
  TC39 meeting notes

  JavaScript

  •125•704•1•7•Updated Mar 5, 2026Mar 5, 2026

• source-map-tests

  Public
  JavaScript

  •

  Other

  •10•12•7•0•Updated Mar 5, 2026Mar 5, 2026

• proposal-intl-keep-trailing-zeros

  Public
  JavaScript

  •

  MIT License

  •2•3•2•0•Updated Mar 3, 2026Mar 3, 2026

• proposal-json-parseimmutable

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

  HTML

  •

  MIT License

  •2•45•3•0•Updated Mar 2, 2026Mar 2, 2026

• test262-harness

  Public
  Experimental harness for test262

  JavaScript

  •

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

  •47•94•14•8•Updated Feb 26, 2026Feb 26, 2026