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Tracking ECMAScript Proposals

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jasnell/proposals

 
 

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ECMAScript proposals

ECMAScript Internationalization API Specification proposals

Contributing new proposals

Please seeContributing to ECMAScript for the most up-to-date information on contributing proposals to this standard.

Active proposals

Proposals followthis process document.This list contains only stage 2 proposals and higher that have not yet been withdrawn/rejected, or become finished.Stage 2 indicates that the committee expects these features to be developed and eventually included in the standard.

Stage 3

ProposalAuthorChampionTestsLast Presented
Legacy RegExp features in JavaScriptClaude PacheMark Miller
Claude Pache
May 2017
Hashbang GrammarBradley FariasBradley FariasNovember 2018
Atomics.waitAsyncLars HansenShu-yu Guo
Lars Hansen
December 2019
Import AssertionsMyles Borins
Sven Sauleau
Dan Clark
Daniel Ehrenberg
Myles Borins
Sven Sauleau
Dan Clark
Daniel Ehrenberg
November 2020
JSON ModulesMyles Borins
Sven Sauleau
Dan Clark
Daniel Ehrenberg
Myles Borins
Sven Sauleau
Dan Clark
Daniel Ehrenberg
January 2021
TemporalPhilipp Dunkel
Maggie Johnson-Pint
Matt Johnson-Pint
Brian Terlson
Shane Carr
Ujjwal Sharma
Philip Chimento
Jason Williams
Justin Grant
Philipp Dunkel
Maggie Johnson-Pint
Matt Johnson-Pint
Brian Terlson
Shane Carr
Ujjwal Sharma
Philip Chimento
Jason Williams
Justin Grant
March 2021
Resizable and growable ArrayBuffersShu-yu GuoShu-yu GuoMay 2021
Array find from lastWenlu WangWenlu Wang
Daniel Rosenwasser
July 2021
ShadowRealmCaridy Patiño
Jean-Francois Paradis
Dave Herman
Mark Miller
Caridy Patiño
Leo Balter
December 2021
Array GroupingJustin RidgewellJustin RidgewellDecember 2021

Stage 2

ProposalAuthorChampionLast Presented
function.sent metapropertyAllen Wirfs-BrockHE Shi-JunJuly 2019
DecoratorsDaniel EhrenbergYehuda Katz
Brian Terlson
Daniel Ehrenberg
Chris Garrett
December 2021
throw expressionsRon BucktonRon BucktonJanuary 2018
Function implementation hidingDomenic Denicola
Michael Ficarra
Michael FicarraJune 2020
New Set methodsMichał Wadas
Sathya Gunasekaran
Sathya GunasekaranJanuary 2019
Sequence properties in Unicode property escapesMathias BynensMathias BynensOctober 2019
collection normalizationBradley FariasBradley FariasJanuary 2019
Array.isTemplateObjectMike Samuel, Krzysztof KotowiczKrzysztof KotowiczDecember 2019
Iterator helpersGus CaplanMichael Ficarra
Jonathan Keslin
July 2020
Explicit Resource ManagementRon BucktonRon BucktonFebruary 2020
Map.prototype.emplaceBradley FariasErica PramerJuly 2020
Dynamic Import Host AdjustmentMike Samuel, Krzysztof KotowiczKrzysztof KotowiczDecember 2019
WeakRefscleanupSomeYulia Startsev
Daniel Ehrenberg
Yulia Startsev
Daniel Ehrenberg
July 2020
Record & TupleRobin Ricard
Richard Button
Robin Ricard
Richard Button
December 2021
JSON.parse source text accessRichard GibsonRichard GibsonJuly 2020
Module BlocksSurma
Daniel Ehrenberg
SurmaJanuary 2021
Symbols as WeakMap keysDaniel Ehrenberg
Richard Button
Robin Ricard
Leo Balter
Rick Waldron
Caridy Patiño
Daniel Ehrenberg
Richard Button
Robin Ricard
Leo Balter
Rick Waldron
Caridy Patiño
April 2021
Adopting Unicode behavior for set notation in regular expressionsMarkus Scherer
Mathias Bynens
Mathias BynensDecember 2021
Change Array by copyRobin RicardRobin RicardAugust 2021
Pipeline OperatorJ. S. Choi
James DiGioia
Ron Buckton
Tab Atkins
J. S. Choi
Ron Buckton
Tab Atkins
August 2021
Destructure Private FieldsJustin RidgewellJustin RidgewellDecember 2021
Array.fromAsyncJ.S. ChoiJ.S. ChoiDecember 2021
RegExp ModifiersRon BucktonRon BucktonDecember 2021
RegExp Buffer Boundaries (\A,\z,\Z)Ron BucktonRon BucktonDecember 2021

✅ means a pull request for tests was merged.

❓ means there is no pull request for tests yet.

🚧 means a pull request for tests was created, but not merged yet.

Onboarding existing proposals

Proposals that are Stage 1 and above must be transferred tothe TC39 GitHub organization for discoverability and archival purposes. To onboard a proposal that lives outside the TC39 organization:

  1. Transfer your repository to the@tc39-transfer organization
  • if you are a TC39 delegate, but not a member of that organization, please contact@LJHarb
  1. One of the chairs (@bterlson,@gesa,@MylesBorins, or@robpalme) will transfer your repository to the TC39 organization the next chance they get.

Note that as part of the onboarding process your repository name may be normalized. Don't worry, repo redirects will continue to workas long as you never create a fork, or a new repository, with the same name - although Github Pages redirects will be broken (please update your links!).

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