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Tracking ECMAScript Proposals
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ECMAScript proposals

Active proposals

Proposals follow this process document. This list contains only stage 1 proposals and higher that have not yet been withdrawn/rejected, or become finished.

🚀 Proposal Champion Stage
Function.prototype.toString revision Michael Ficarra 3
  global                                           Jordan Harband                     3
Rest/Spread Properties Sebastian Markbage 3
Asynchronous Iteration Domenic Denicola 3
import() Domenic Denicola 3
RegExp Lookbehind Assertions Daniel Ehrenberg 3
RegExp Unicode Property Escapes Brian Terlson, Daniel Ehrenberg, Mathias Bynens 3
RegExp named capture groups Daniel Ehrenberg, Brian Terlson 3
s (dotAll) flag for regular expressions Mathias Bynens, Brian Terlson 3
Legacy RegExp features in JavaScript Mark Miller, Claude Pache 3
Promise.prototype.finally Jordan Harband 3
BigInt Daniel Ehrenberg 3
Class Fields Daniel Ehrenberg, Jeff Morrison 3
Optional catch binding Michael Ficarra 3
function.sent metaproperty Allen Wirfs-Brock 2
String.prototype.{trimStart,trimEnd} Sebastian Markbage 2
Class and Property Decorators (update) Yehuda Katz and Brian Terlson 2
Intl.Segmenter Daniel Ehrenberg 2
import.meta Domenic Denicola 2
Intl.RelativeTimeFormat Zibi Braniecki, Daniel Ehrenberg 2
Numeric separators Sam Goto, Rick Waldron 2
export * as ns from "mod"; statements Ben Newman and John-David Dalton 2
Private methods and accessors Daniel Ehrenberg, Kevin Gibbons 2
Date.parse fallback semantics Morgan Phillips 1
export v from "mod"; statements Ben Newman and John-David Dalton 1
🚀 Observable Jafar Husain and Mark Miller 1
String#matchAll Jordan Harband 1
WeakRefs Dean Tribble 1
Frozen Realms Mark S. Miller, Chip Morningstar, Caridy Patiño 1
Math Extensions Rick Waldron 1
of and from on collection constructors Leo Balter 1
Generator arrow functions (=>*) Brendan Eich, Domenic Denicola 1
Promise.try Jordan Harband 1
Optional Chaining Gabriel Isenberg 1
Math.signbit: IEEE-754 sign bit JF Bastien 1
Error stacks Jordan Harband 1
do expressions Dave Herman 1
Realms Dave Herman, Mark Miller, Caridy Patiño 1
Temporal Maggie Pint, Brian Terlson 1
Float16 on TypedArrays, DataView, Math.hfround Leo Balter 1
Atomics.waitNonblocking Shu-yu Guo, Lars Hansen 1
Symbol.prototype.description Michael Ficarra 1
change Number.parseInt/parseFloat to not coerce null/undefined/NaN (repo link TBD) Brendan Eich 1
Array.prototype.flat{Map,ten} Brian Terlson, Michael Ficarra 1
Throw expressions Rob Buckton 1
Binary AST Shu-yu Guo 1

🚀 means the champion thinks it's ready to advance but has not yet presented to the committee.

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 @bterlson
  2. Email @bterlson at brian.terlson AT notifying me of the transfer (GitHub's transfer notification is not the most obvious thing and there's only a short window to accept the transfer)
  3. @bterlson will transfer your repository to the TC39 organization.

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

You can’t perform that action at this time.