tc39/agendas

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tc39

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TC39 meeting agendas

agendas

TC39 meeting agendas

Future Meetings

Confirmed	Future Dates	Location	Host
✔	2023-09-26 to 2023-09-28	Tokyo, Japan	Bloomberg
✔	2023-11-27 to 2023-11-30	Remote: "SF"

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

proposals

Tracking ECMAScript Proposals

17,177

ecma262

Status, process, and documents for ECMA-262

HTML

14,437

proposal-pipeline-operator

A proposal for adding a useful pipe operator to JavaScript.

HTML

7,534

proposal-pattern-matching

Pattern matching syntax for ECMAScript

HTML

5,498

proposal-optional-chaining

HTML

4,942

proposal-type-annotations

ECMAScript proposal for type syntax that is erased - Stage 1

JavaScript

4,252

proposal-signals

A proposal to add signals to JavaScript.

3,387

proposal-temporal

Provides standard objects and functions for working with dates and times.

HTML

3,321

proposal-observable

Observables for ECMAScript

JavaScript

3,058

proposal-decorators

Decorators for ES6 classes

2,640

proposal-record-tuple

ECMAScript proposal for the Record and Tuple value types. | Stage 2: it will change!

HTML

2,496

test262

Official ECMAScript Conformance Test Suite

JavaScript

2,073

proposal-dynamic-import

import() proposal for JavaScript

HTML

1,863

proposal-bind-operator

This-Binding Syntax for ECMAScript

1,742

proposal-class-fields

Orthogonally-informed combination of public and private fields proposals

HTML

1,722

proposal-async-await

Async/await for ECMAScript

HTML

1,578

proposal-object-rest-spread

Rest/Spread Properties for ECMAScript

HTML

1,493

proposal-shadowrealm

ECMAScript Proposal, specs, and reference implementation for Realms

HTML

1,429

proposal-iterator-helpers

Methods for working with iterators in ECMAScript

HTML

1,307

proposal-nullish-coalescing

Nullish coalescing proposal x ?? y

HTML

1,232

proposal-top-level-await

top-level `await` proposal for ECMAScript (stage 4)

HTML

1,083

proposal-partial-application

Proposal to add partial application to ECMAScript

HTML

1,002

proposal-do-expressions

Proposal for `do` expressions

HTML

990

proposal-binary-ast

Binary AST proposal for ECMAScript

961

proposal-built-in-modules

HTML

891

proposal-async-iteration

Asynchronous iteration for JavaScript

HTML

857

proposal-explicit-resource-management

ECMAScript Explicit Resource Management

JavaScript

746

proposal-set-methods

Proposal for new Set methods in JS

HTML

655

proposal-string-dedent

TC39 Proposal to remove common leading indentation from multiline template strings

HTML

614

proposal-operator-overloading

JavaScript

610

proposal-import-attributes

Proposal for syntax to import ES modules with assertions

HTML

591

proposal-async-context

Async Context for JavaScript

HTML

587

proposal-bigint

Arbitrary precision integers in JavaScript

HTML

561

ecmascript_simd

SIMD numeric type for EcmaScript

JavaScript

540

ecma402

Status, process, and documents for ECMA 402

HTML

529

proposal-slice-notation

HTML

523

proposal-change-array-by-copy

Provides additional methods on Array.prototype and TypedArray.prototype to enable changes on the array by returning a new copy of it with the change.

notes

proposal-class-public-fields

Stage 2 proposal for public class fields in ECMAScript

HTML

489

proposal-iterator.range

A proposal for ECMAScript to add a built-in Iterator.range()

HTML

483

proposal-decimal

Built-in exact decimal numbers for JavaScript

HTML

477

proposal-uuid

UUID proposal for ECMAScript (Stage 1)

JavaScript

463

proposal-module-expressions

HTML

433

proposal-throw-expressions

Proposal for ECMAScript 'throw' expressions

JavaScript

425

proposal-UnambiguousJavaScriptGrammar

proposal-weakrefs

proposal-array-grouping

A proposal to make grouping of array items easier

HTML

407

proposal-error-cause

TC39 proposal for accumulating errors

HTML

380

proposal-cancelable-promises

Former home of the now-withdrawn cancelable promises proposal for JavaScript

Shell

376

proposal-ecmascript-sharedmem

Shared memory and atomics for ECMAscript

HTML

374

proposal-module-declarations

JavaScript Module Declarations

HTML

369

proposal-first-class-protocols

a proposal to bring protocol-based interfaces to ECMAScript users

352

proposal-relative-indexing-method

A TC39 proposal to add an .at() method to all the basic indexable classes (Array, String, TypedArray)

HTML

351

proposal-global

ECMAScript Proposal, specs, and reference implementation for `global`

HTML

346

proposal-private-methods

Private methods and getter/setters for ES6 classes

HTML

345

proposal-numeric-separator

A proposal to add numeric literal separators in JavaScript.

HTML

330

proposal-private-fields

A Private Fields Proposal for ECMAScript

HTML

319

tc39.github.io

Get involved in specifying JavaScript

HTML

318

proposal-object-from-entries

TC39 proposal for Object.fromEntries

HTML

318

proposal-promise-allSettled

ECMAScript Proposal, specs, and reference implementation for Promise.allSettled

HTML

314

proposal-await.ops

Introduce await.all / await.race / await.allSettled / await.any to simplify the usage of Promises

HTML

310

proposal-regex-escaping

Proposal for investigating RegExp escaping for the ECMAScript standard

JavaScript

309

proposal-export-default-from

Proposal to add `export v from "mod";` to ECMAScript.

HTML

306

proposal-logical-assignment

A proposal to combine Logical Operators and Assignment Expressions

HTML

302

proposal-promise-finally

ECMAScript Proposal, specs, and reference implementation for Promise.prototype.finally

HTML

279

proposal-json-modules

Proposal to import JSON files as modules

HTML

272

proposal-asset-references

Proposal to ECMAScript to add first-class location references relative to a module

270

proposal-cancellation

Proposal for a Cancellation API for ECMAScript

HTML

267

proposal-promise-with-resolvers

HTML

255

proposal-string-replaceall

ECMAScript proposal: String.prototype.replaceAll

HTML

253

proposal-export-ns-from

Proposal to add `export * as ns from "mod";` to ECMAScript.

HTML

242

proposal-structs

JavaScript Structs: Fixed Layout Objects

230

proposal-ses

Draft proposal for SES (Secure EcmaScript)

HTML

223

proposal-intl-relative-time

`Intl.RelativeTimeFormat` specification [draft]

HTML

215

proposal-json-parse-with-source

Proposal for extending JSON.parse to expose input source text.

HTML

214

proposal-flatMap

proposal for flatten and flatMap on arrays

HTML

214

proposal-defer-import-eval

A proposal for introducing a way to defer evaluate of a module

HTML

208

ecmarkup

An HTML superset/Markdown subset source format for ECMAScript and related specifications

TypeScript

201

proposal-promise-any

ECMAScript proposal: Promise.any

HTML

200

proposal-optional-chaining-assignment

`a?.b = c` proposal

186

proposal-decorators-previous

Decorators for ECMAScript

HTML

184

proposal-smart-pipelines

Old archived draft proposal for smart pipelines. Go to the new Hack-pipes proposal at js-choi/proposal-hack-pipes.

HTML

181

proposal-array-from-async

Draft specification for a proposed Array.fromAsync method in JavaScript.

HTML

178

proposal-upsert

ECMAScript Proposal, specs, and reference implementation for Map.prototype.upsert

HTML

176

proposal-collection-methods

HTML

171

proposal-array-filtering

A proposal to make filtering arrays easier

HTML

171

proposal-ptc-syntax

Discussion and specification for an explicit syntactic opt-in for Tail Calls.

HTML

169

proposal-extractors

Extractors for ECMAScript

JavaScript

166

proposal-error-stacks

ECMAScript Proposal, specs, and reference implementation for Error.prototype.stack / System.getStack

HTML

166

proposal-intl-duration-format

164

how-we-work

Documentation of how TC39 operates and how to participate

161

proposal-Array.prototype.includes

Spec, tests, reference implementation, and docs for ESnext-track Array.prototype.includes

HTML

157

proposal-promise-try

ECMAScript Proposal, specs, and reference implementation for Promise.try

HTML

154

proposal-extensions

Extensions proposal for ECMAScript

proposal-hashbang

proposal-import-meta

import.meta proposal for JavaScript

HTML

146

proposal-intl-segmenter

Unicode text segmentation for ECMAScript

HTML

146

proposal-resizablearraybuffer

Proposal for resizable array buffers

HTML

145

proposal-seeded-random

Proposal for an options argument to be added to JS's Math.random() function, and some options to start it with.

HTML

143

100

eshost

A uniform wrapper around a multitude of ECMAScript hosts. CLI: https://github.com/bterlson/eshost-cli

JavaScript

142

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