Repositories list

• 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 22, 2026Mar 22, 2026

• test262

  Public

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

  javascriptjstests+ 1

  javascriptjsteststc39

  JavaScript

  •

  Other

  •534•2.7k•213•93•Updated Mar 21, 2026Mar 21, 2026

• notes

  Public

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

  JavaScript

  •125•705•1•6•Updated Mar 20, 2026Mar 20, 2026

• how-we-work

  Public

  tc39/how-we-work’s past year of commit activity
  Documentation of how TC39 operates and how to participate

  29•215•23•8•Updated Mar 20, 2026Mar 20, 2026

• proposals

  Public

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

  javascriptlanguageproposal+ 5

  javascriptlanguageproposalecmascriptspecspecificationlanguage-designcommittee

  745•19k•3•3•Updated Mar 20, 2026Mar 20, 2026

• proposal-deferred-reexports

  Public

  tc39/proposal-deferred-reexports’s past year of commit activity
  MIT License

  •5•51•7•2•Updated Mar 20, 2026Mar 20, 2026

• ecma262

  Public

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

  javascriptecmascript

  javascriptecmascript

  HTML

  •

  Other

  •1.4k•16k•356•118•Updated Mar 20, 2026Mar 20, 2026

• proposal-defer-import-eval

  Public

  tc39/proposal-defer-import-eval’s past year of commit activity
  A proposal for introducing a way to defer evaluate of a module

  HTML

  •

  MIT License

  •21•305•6•1•Updated Mar 20, 2026Mar 20, 2026

• tc39.github.io

  Public
  Get involved in specifying JavaScript

  HTML

  •

  MIT License

  •61•331•28•2•Updated Mar 20, 2026Mar 20, 2026

• 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

  •10•8•4•1•Updated Mar 19, 2026Mar 19, 2026

• test262-harness

  Public
  Experimental harness for test262

  JavaScript

  •

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

  •48•94•14•9•Updated Mar 18, 2026Mar 18, 2026

• proposal-immutable-arraybuffer

  Public

  tc39/proposal-immutable-arraybuffer’s past year of commit activity
  A TC39 proposal for immutable ArrayBuffers

  JavaScript

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  MIT License

  •5•35•8•1•Updated Mar 18, 2026Mar 18, 2026

• tg5

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

  3•26•28•0•Updated Mar 18, 2026Mar 18, 2026

• proposal-temporal

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

  HTML

  •

  Other

  •174•3.7k•16•5•Updated Mar 17, 2026Mar 17, 2026

• proposal-async-context

  Public
  Async Context for JavaScript

  javascript

  javascript

  HTML

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  Creative Commons Zero v1.0 Universal

  •26•830•22•7•Updated Mar 17, 2026Mar 17, 2026

• ecma426

  Public
  Source map specification, RFCs and new proposals.

  JavaScript

  •

  Other

  •25•184•63•10•Updated Mar 17, 2026Mar 17, 2026

• proposal-await-dictionary

  Public
  A proposal to add Promise.allKeyed to ECMAScript

  JavaScript

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  MIT License

  •8•127•6•1•Updated Mar 15, 2026Mar 15, 2026

• proposal-thenable-curtailment

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

  MIT License

  •0•13•8•0•Updated Mar 13, 2026Mar 13, 2026

• proposal-typedarray-concat

  Public
  A proposal for optimizable TypedArray concatenation

  JavaScript

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  MIT License

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

• proposal-iterator-includes

  Public
  Array.prototype.includes but for iterators

  JavaScript

  •1•8•1•0•Updated Mar 12, 2026Mar 12, 2026

• proposal-enum

  Public

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

  HTML

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

  •9•482•11•3•Updated Mar 12, 2026Mar 12, 2026

• proposal-import-text

  Public
  A TC39 proposal for importing text

  0•33•1•0•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•389•24•0•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

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

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

• proposal-cancellation

  Public
  Proposal for a Cancellation API for ECMAScript

  javascriptproposalecmascript+ 1

  javascriptproposalecmascriptcancellation

  HTML

  •

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

  •7•273•11•0•Updated Mar 10, 2026Mar 10, 2026

• proposal-esm-phase-imports

  Public
  HTML

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  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•21•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•1•0•Updated Mar 10, 2026Mar 10, 2026