README.md

ECMAScript proposals

• Stage 1 Proposals
• Stage 0 Proposals
• Finished Proposals
• Inactive 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 This list contains only stage 2 proposals and higher that have not yet been withdrawn/rejected, or become finished.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 ✅ June 2019 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 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

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 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 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 Promise.any Mathias Bynens
Kevin Gibbons
Sergey Rubanov Mathias Bynens July 2019 Iterator helpers Gus Caplan Domenic Denicola July 2019 Explicit Resource Management Ron Buckton Ron Buckton July 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:

1. Transfer your repository to the @tc39-transfer organization

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

1. @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!).