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 This list contains only stage 2 proposals and higher that have not yet been withdrawn/rejected, or become finished.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}
`globalThis`	Jordan Harband	Jordan Harband	✅	_{November 2018}
Legacy RegExp features in JavaScript	Claude Pache	Mark Miller Claude Pache	✅	_May 2017
`BigInt`	Daniel Ehrenberg	Daniel Ehrenberg	✅	_May 2018
`import.meta`	Domenic Denicola	Domenic Denicola	✅	_{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}
`Promise.allSettled`	Jason Williams Robert Pamely Mathias Bynens	Mathias Bynens	✅	_March 2019
Numeric separators	Sam Goto Rick Waldron	Sam Goto Rick Waldron	✅	_March 2019
Top-level `await`	Myles Borins	Myles Borins	❓	_June 2019

Stage 2

Proposal	Author	Champion	_{Last Presented}
`function.sent` metaproperty	Allen Wirfs-Brock	Allen Wirfs-Brock	_{November 2015}
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	_{September 2017}
WeakRefs	Dean Tribble	Dean Tribble Mark Miller Till Schneidereit	_March 2018
Function implementation hiding	Domenic Denicola Michael Ficarra	Domenic Denicola Michael Ficarra	_May 2018
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	Domenic Denicola	_July 2018
RegExp Match array offsets	Ron Buckton	Ron Buckton	_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}
`String.prototype.replaceAll`	Peter Marshall Jakob Gruber Mathias Bynens	Mathias Bynens	_March 2019
`for-in` mechanics	Kevin Gibbons	Kevin Gibbons	_June 2019
Array.isTemplateObject	Mike Samuel	Mike Samuel	_June 2019
Optional Chaining	Gabriel Isenberg Claude Pache Dustin Savery	Gabriel Isenberg Dustin Savery Justin Ridgewell Daniel Rosenwasser	_June 2019
Nullish coalescing Operator	Gabriel Isenberg	Gabriel Isenberg Justin Ridgewell Daniel Rosenwasser	_June 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.

Note that as part of the onboarding process your repository name may be normalized. Don't worry, repo redirects will continue to work as 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!).