ECMAScript proposals

ECMAScript Internationalization API Specification proposals

Active proposals

Proposals follow this 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 This list contains only stage 2 proposals and higher that have not yet been withdrawn/rejected, or become finished.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

Proposal	Author	Champion	Tests	_{Last Presented}
Legacy RegExp features in JavaScript	Claude Pache	Mark Miller Claude Pache	❓	_May 2017
`import.meta`	Domenic Denicola	(none)	✅	_{September 2017}
Private instance methods and accessors	Daniel Ehrenberg	Daniel Ehrenberg Kevin Gibbons	❓	_{January 2019}
Class Public Instance Fields & Private Instance Fields	Daniel Ehrenberg Kevin Gibbons	Daniel Ehrenberg Jeff Morrison Kevin Smith Kevin Gibbons	❓	_{January 2019}
Static class fields and private static methods	Daniel Ehrenberg Kevin Gibbons Jeff Morrison Kevin Smith	Shu-Yu Guo Daniel Ehrenberg	❓	_{January 2019}
Hashbang Grammar	Bradley Farias	Bradley Farias	✅	_{November 2018}
Numeric separators	Sam Goto Rick Waldron	Sam Goto Rick Waldron	✅	_June 2019
Top-level `await`	Myles Borins	Myles Borins	✅	_June 2019
WeakRefs	Dean Tribble Sathya Gunasekaran	Dean Tribble Mark Miller Till Schneidereit Sathya Gunasekaran	✅	_June 2019
Nullish coalescing Operator	Gabriel Isenberg	Gabriel Isenberg Justin Ridgewell Daniel Rosenwasser	✅	_{July 2019}
RegExp Match array offsets	Ron Buckton	Ron Buckton	❓	_{July 2019}
Optional Chaining	Gabriel Isenberg Claude Pache Dustin Savery	Gabriel Isenberg Dustin Savery Justin Ridgewell Daniel Rosenwasser	✅	_{July 2019}
`for-in` mechanics	Kevin Gibbons	Kevin Gibbons	❓	_{October 2019}
`String.prototype.replaceAll`	Peter Marshall Jakob Gruber Mathias Bynens	Mathias Bynens	❓	_{October 2019}
`Promise.any`	Mathias Bynens Kevin Gibbons Sergey Rubanov	Mathias Bynens	❓	_{October 2019}

Stage 2

Proposal	Author	Champion	_{Last Presented}
`function.sent` metaproperty	Allen Wirfs-Brock	贺师俊 (HE Shi-Jun)	_{July 2019}
Decorators	Daniel Ehrenberg	Yehuda Katz Brian Terlson Daniel Ehrenberg	_{January 2019}
`throw` expressions	Ron Buckton	Ron Buckton	_{January 2018}
`Atomics.waitAsync`	Lars Hansen	Shu-yu Guo Lars Hansen	_June 2019
Function implementation hiding	Domenic Denicola Michael Ficarra	Michael Ficarra	_July 2019
New Set methods	Michał Wadas Sathya Gunasekaran	Sathya Gunasekaran	_{January 2019}
Realms	Caridy Patiño Jean-Francois Paradis	Dave Herman Mark Miller Caridy Patiño	_May 2018
`ArrayBuffer.prototype.transfer`	Domenic Denicola	Shu-yu Guo	_July 2018
Sequence properties in Unicode property escapes	Mathias Bynens	Mathias Bynens	_{September 2018}
Temporal	Maggie Pint Matt Johnson Philipp Dunkel	Maggie Pint Philipp Dunkel Brian Terlson	_{September 2018}
collection normalization	Bradley Farias	Bradley Farias	_{January 2019}
Array.isTemplateObject	Mike Samuel	Mike Samuel	_June 2019
Iterator helpers	Gus Caplan	Michael Ficarra Jonathan Keslin	_{July 2019}
Explicit Resource Management	Ron Buckton	Ron Buckton	_{July 2019}
`Map.prototype.upsert`	Bradley Farias	Erica Pramer	_{October 2019}

✅ 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.

Contributing new proposals

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

Onboarding existing proposals

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

Transfer your repository to the @tc39-transfer organization

if you are a TC39 delegate, but not an admin in that organization, please contact @LJHarb

@bterlson, @gesa, or @codehag will transfer your repository to the TC39 organization the next chance they get.