Repositories list

• proposal-first-class-protocols

  Public

  tc39/proposal-first-class-protocols’s past year of commit activity
  a proposal to bring protocol-based interfaces to ECMAScript users

  JavaScript

  •

  MIT License

  •8•366•19•0•Updated Mar 3, 2026Mar 3, 2026

• ecma426

  Public

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

  JavaScript

  •

  Other

  •26•176•62•10•Updated Mar 3, 2026Mar 3, 2026

• agendas

  Public

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

  JavaScript

  •201•1.2k•0•2•Updated Mar 3, 2026Mar 3, 2026

• proposal-esm-phase-imports

  Public
  HTML

  •

  MIT License

  •2•53•4•4•Updated Mar 3, 2026Mar 3, 2026

• 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

  •173•3.7k•16•4•Updated Mar 3, 2026Mar 3, 2026

• test262

  Public
  Official ECMAScript Conformance Test Suite

  javascriptjstests+ 1tc39

  JavaScript

  •

  Other

  •528•2.7k•211•88•Updated Mar 3, 2026Mar 3, 2026

• proposal-import-text

  Public

  tc39/proposal-import-text’s past year of commit activity
  A TC39 proposal for importing text

  0•28•4•1•Updated Mar 3, 2026Mar 3, 2026

• proposal-intl-keep-trailing-zeros

  Public
  JavaScript

  •

  MIT License

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

• dataset

  Public
  The automatic track tc39 proposals

  tc39

  TypeScript

  •

  The Unlicense

  •11•47•2•0•Updated Mar 3, 2026Mar 3, 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

  •0•12•6•0•Updated Mar 2, 2026Mar 2, 2026

• tc39.github.io

  Public

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

  HTML

  •

  MIT License

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

• notes

  Public
  TC39 meeting notes

  JavaScript

  •125•699•1•15•Updated Mar 2, 2026Mar 2, 2026

• proposals

  Public

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

  javascriptlanguageproposal+ 5ecmascriptspecspecificationlanguage-designcommittee

  741•19k•3•3•Updated Mar 2, 2026Mar 2, 2026

• proposal-json-parseimmutable

  Public

  tc39/proposal-json-parseimmutable’s past year of commit activity
  JSON.parseImmutable for creating Records and Tuples from JSON strings

  HTML

  •

  MIT License

  •2•42•3•0•Updated Mar 2, 2026Mar 2, 2026

• 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

  •8•45•34•5•Updated Mar 2, 2026Mar 2, 2026

• proposal-intl-unit-protocol

  Public

  tc39/proposal-intl-unit-protocol’s past year of commit activity
  TC39 proposal for adding units to format functions

  JavaScript

  •

  MIT License

  •0•6•4•0•Updated Mar 2, 2026Mar 2, 2026

• ecma262

  Public
  Status, process, and documents for ECMA-262

  javascriptecmascript

  HTML

  •

  Other

  •1.4k•16k•356•116•Updated Feb 27, 2026Feb 27, 2026

• test262-harness

  Public

  tc39/test262-harness’s past year of commit activity
  Experimental harness for test262

  JavaScript

  •

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

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

  •9•6•6•1•Updated Feb 25, 2026Feb 25, 2026

• proposal-typedarray-findwithin

  Public

  tc39/proposal-typedarray-findwithin’s past year of commit activity
  A proposal for searching for a subsequence within a TypedArray

  JavaScript

  •

  MIT License

  •0•7•7•0•Updated Feb 24, 2026Feb 24, 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•2•7•0•Updated Feb 24, 2026Feb 24, 2026

• proposal-deferred-reexports

  Public
  MIT License

  •5•51•7•2•Updated Feb 23, 2026Feb 23, 2026

• ecmarkup

  Public

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

  TypeScript

  •

  MIT License

  •74•237•101•13•Updated Feb 22, 2026Feb 22, 2026

• ecma402

  Public
  Status, process, and documents for ECMA 402

  HTML

  •

  Other

  •114•595•160•7•Updated Feb 19, 2026Feb 19, 2026

• tg5

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

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

• proposal-decimal

  Public

  tc39/proposal-decimal’s past year of commit activity
  Built-in exact decimal numbers for JavaScript

  javascriptarithmeticdecimal+ 2ieee754decimal128

  HTML

  •18•606•54•0•Updated Feb 12, 2026Feb 12, 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•304•6•3•Updated Feb 12, 2026Feb 12, 2026

• how-we-work

  Public
  Documentation of how TC39 operates and how to participate

  29•216•23•9•Updated Feb 12, 2026Feb 12, 2026

• 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

  •26•826•23•8•Updated Feb 11, 2026Feb 11, 2026

• proposal-import-bytes

  Public

  tc39/proposal-import-bytes’s past year of commit activity
  A modest proposal for importing bytes in javascript

  JavaScript

  •

  MIT License

  •5•74•2•0•Updated Feb 9, 2026Feb 9, 2026