Stage 1 proposals represent problems that the committee is interested in spending time exploring solutions to.
Proposals follow this process document.
| Proposal | Author | Champion | Last Presented |
|---|---|---|---|
export v from "mod"; statements |
Lee Byron | Ben Newman John-David Dalton |
July 2017 |
| Observable | Jafar Husain | Jafar Husain Mark Miller |
May 2017 |
| SES (Secure EcmaScript) | Mark Miller Chip Morningstar Caridy Patiño |
Mark Miller Chip Morningstar Caridy Patiño |
February 2020 |
of and from on collection constructors |
Leo Balter | Leo Balter | September 2016 |
| Error stacks | Jordan Harband Mark Miller |
Jordan Harband Mark Miller |
January 2017 |
do expressions |
Dave Herman | Kevin Gibbons | June 2020 |
Change Number.parseInt/parseFloat to not coerce null/undefined/NaN (repo link TBD) |
Brendan Eich | July 2017 | |
| Binary AST | Shu-yu Guo | Shu-yu Guo | May 2018 |
| First-class protocols | Michael Ficarra | Michael Ficarra | July 2018 |
| Partial application | Ron Buckton | Ron Buckton | July 2018 |
| Cancellation API | Ron Buckton | Ron Buckton Brian Terlson |
July 2018 |
String.prototype.codePoints |
Ingvar Stepanyan | Mathias Bynens | May 2018 |
Object.freeze + Object.seal syntax |
Keith Cirkel | Keith Cirkel | November 2017 |
| Block Params | Sam Goto | Sam Goto | November 2017 |
{BigInt,Number}.fromString |
Mathias Bynens | Mathias Bynens | January 2018 |
Math.seededRandoms() |
Tab Atkins | Tab Atkins | January 2018 |
| Maximally minimal mixins | Justin Fagnani | Justin Fagnani | January 2018 |
| Collection methods | Michał Wadas | Sathya Gunasekaran | January 2018 |
| Richer Keys | Bradley Farias | Bradley Farias | January 2019 |
| Slice notation | Sathya Gunasekaran | Sathya Gunasekaran | July 2020 |
| Module Keys | Mike Samuel | Mike Samuel | May 2018 |
| class Access Expressions | Ron Buckton | Ron Buckton | September 2020 |
| Pattern Matching | Jordan Harband Mark Cohen Tab Atkins Daniel Rosenwasser Jack Works Ross Kirsling |
Jordan Harband Mark Cohen Tab Atkins Daniel Rosenwasser Jack Works Ross Kirsling |
March 2022 |
| Dynamic Modules | Bradley Farias | Bradley Farias | July 2018 |
| Built In Modules (aka JS Standard Library) | Michael Saboff Mattijs Hoitink |
Michael Saboff Mattijs Hoitink Mark Miller |
September 2020 |
uniform parsing of quasi-standard Date.parse input |
Richard Gibson | Richard Gibson | September 2018 |
| IDL for ECMAScript | Daniel Ehrenberg | Daniel Ehrenberg | September 2018 |
| Asset References | Sebastian Markbage | Sebastian Markbage | November 2018 |
| Freezing prototypes | Kevin Gibbons | Kevin Gibbons | January 2019 |
new.initialize |
Daniel Ehrenberg | Daniel Ehrenberg | January 2019 |
| Private declarations | Justin Ridgewell | Justin Ridgewell | March 2019 |
| Emitter | Shu-yu Guo Pedram Emrouznejad |
Shu-yu Guo Pedram Emrouznejad |
June 2019 |
| Reverse iteration | Leo Balter Jordan Harband |
Leo Balter Jordan Harband |
July 2019 |
| Declarations in Conditionals | Devin Rousso | Devin Rousso | October 2019 |
| Readonly Collections | Mark Miller Peter Hoddie |
Mark Miller Peter Hoddie |
October 2019 |
| Support for Distributed Promise Pipelining | Mark Miller Chip Morningstar Michael Fig |
Mark Miller Chip Morningstar Michael Fig |
October 2019 |
| Wavy Dot: Syntactic Support for Promise Pipelining | Mark Miller Chip Morningstar Michael Fig |
Mark Miller Chip Morningstar Michael Fig |
December 2019 |
| OOM Fails Fast | Mark Miller | Mark Miller | December 2019 |
| Array filtering | Justin Ridgewell | Justin Ridgewell | February 2020 |
| Async initialization | Bradley Farias | Bradley Farias | February 2020 |
| Decimal | Daniel Ehrenberg Andrew Paprocki |
Philip Chimento Andrew Paprocki Jesse Alama |
December 2021 |
| Preserve Host Virtualizability | Mark Miller J.F. Paradis Caridy Patiño Dan Finley Alan Schmitt |
Mark Miller J.F. Paradis Caridy Patiño Dan Finley Alan Schmitt |
February 2020 |
| Legacy reflection features for functions in JavaScript | Mark Miller Claude Pache Jack Works |
Mark Miller Claude Pache Jack Works |
February 2020 |
| Cryptographically Secure Random Number Generation | Ron Buckton | Ron Buckton | February 2020 |
| Compartments | Bradley Farias | Bradley Farias Mark S. Miller Caridy Patiño J.F. Paradis Patrick Soquet Kris Kowal |
March 2020 |
| Deep Path Properties in Record Literals | Rick Button | Rick Button | June 2020 |
| Restrict subclassing support in built-in methods | Yulia Startsev Shu-yu Guo |
Yulia Startsev Shu-yu Guo |
June 2020 |
| Array Equality | Hemanth HM Jordan Harband |
Hemanth HM Jordan Harband |
June 2020 |
| await operations | Jack Works | Jack Works Jordan Harband |
July 2020 |
Array.prototype.unique() |
TechQuery | Jack Works | July 2020 |
| Double-Ended Iterator and Destructuring | HE Shi-Jun | HE Shi-Jun | September 2020 |
| Standardized Debug | Gus Caplan | Gus Caplan | November 2020 _ |
| Modulus and Additional Integer Math | Peter Hoddie | Peter Hoddie | September 2020 |
| Extensions | HE Shi-Jun | HE Shi-Jun | November 2020 |
| Grouped Accessors and Auto-Accessors | Ron Buckton | Ron Buckton | November 2020 |
async do expressions |
Kevin Gibbons | Kevin Gibbons | January 2021 |
| Class Brand Checks | HE Shi-Jun | HE Shi-Jun | January 2021 |
| Limited ArrayBuffer | Jack Works | Jack Works | April 2021 |
| BigInt Math | J.S. Choi | J.S. Choi | August 2021 |
| Get Intrinsic | Jordan Harband | Jordan Harband | August 2021 |
String.cooked |
Darien Maillet Valentine | Jamie Kyle Hemanth HM |
October 2021 |
| Call-this operator | J.S. Choi | J.S. Choi | October 2021 |
| RegExp Extended Mode and Comments | Ron Buckton | Ron Buckton | October 2021 |
RegExp \R Escape |
Ron Buckton | Ron Buckton | December 2021 |
| Reversible string split | Luca Casonato | Luca Casonato | January 2022 |
| Function once | J. S. Choi | J. S. Choi | March 2022 |
| Type Annotations | Gil Tayar Daniel Rosenwasser Romulo Cintra Rob Palmer |
Daniel Rosenwasser Romulo Cintra Rob Palmer |
March 2022 |
| Faster Promise adoption | Justin Ridgewell | Justin Ridgewell | June 2022 |
| RegExp Atomic Operators | Ron Buckton | Ron Buckton | June 2022 |
| Policy Maps and Sets | J.S. Choi | J.S. Choi Hemanth HM |
July 2022 |
| Function Memoization | J.S. Choi | J.S. Choi Hemanth HM |
July 2022 |
| Object pick/omit | Hemanth HM Aleen |
Hemanth HM | July 2022 |
| Mass Proxy Revocation | Alex Vincent | Mark S. Miller, Jack Works | November 2022 |
| Prototype pollution mitigation | Santiago Díaz Jun Kokatsu |
Shu-yu Guo | January 2023 |
| Await Dictionary | Alexander J. Vincent | Ashley Claymore Jordan Harband Chris de Almeida |
March 2023 |
| Class Method Parameter Decorators | Ron Buckton | Ron Buckton | March 2023 |
| Optional chaining in assignment LHS | Nicolò Ribaudo | Nicolò Ribaudo | July 2023 |
| DataView get/set Uint8Clamped methods | Jordan Harband | Jordan Harband | July 2023 |
| Stable Formatting | Eemeli Aro | Eemeli Aro | September 2023 |
Negated in and instanceof operators |
Pablo Gorostiaga Belio | Pablo Gorostiaga Belio | September 2023 |
| Locale Extensions | Ben Allen | Ben Allen | September 2023 |
| Module sync assert | Jack Works | Jack Works | November 2023 |
| Iterator unique | Michael Ficarra | Michael Ficarra | February 2024 |
| Improved Escapes for Template Literals | HE Shi-Jun | HE Shi-Jun | February 2024 |
| Function and Object Literal Decorators | Ron Buckton | Ron Buckton | February 2024 |
| Strict Enforcement of 'using' | Ron Buckton | Ron Buckton | April 2024 |
| Signals | Rob Eisenberg Daniel Ehrenberg |
Daniel Ehrenberg Yehuda Katz Jatin Ramanathan Shay Lewis Kristen Hewell Garrett Dominic Gannaway Preston Sego Milo M Rob Eisenberg |
April 2024 |
| Concurrency Control | Michael Ficarra Luca Casonato Kevin Gibbons |
Michael Ficarra Luca Casonato |
July 2024 |
| Unordered Async Iterator Helpers | Michael Ficarra | Michael Ficarra | July 2024 |
Array.zip and Array.zipKeyed |
Jordan Harband | Jordan Harband | October 2024 |
| Stabilize | Mark Miller Chip Morningstar Richard Gibson Mathieu Hofman |
Mark Miller Chip Morningstar Richard Gibson Mathieu Hofman |
December 2024 |
| Sync Imports | Guy Bedford | Guy Bedford | December 2024 |
See also the active proposals, stage 0 proposals, finished proposals, and inactive proposals documents.