tc39

Tracking ECMAScript Proposals

Status, process, and documents for ECMA-262

A proposal for adding a useful pipe operator to JavaScript.

Pattern matching syntax for ECMAScript

ECMAScript proposal for type syntax that is erased - Stage 1

A proposal to add signals to JavaScript.

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

Observables for ECMAScript

Decorators for ES6 classes

Official ECMAScript Conformance Test Suite

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

import() proposal for JavaScript

This-Binding Syntax for ECMAScript

Orthogonally-informed combination of public and private fields proposals

ECMAScript Proposal, specs, and reference implementation for Realms

Async/await for ECMAScript

Rest/Spread Properties for ECMAScript

Methods for working with iterators in ECMAScript

Nullish coalescing proposal x ?? y

Proposal for `do` expressions

TC39 meeting agendas

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

Proposal to add partial application to ECMAScript

Binary AST proposal for ECMAScript

ECMAScript Explicit Resource Management

Async Context for JavaScript

Asynchronous iteration for JavaScript

JavaScript Structs: Fixed Layout Objects

TC39 meeting notes

TC39 Proposal to remove common leading indentation from multiline template strings

Proposal for new Set methods in JS

Built-in exact decimal numbers for JavaScript

Proposal for syntax to import ES modules with assertions

Status, process, and documents for ECMA 402

Arbitrary precision integers in JavaScript

SIMD numeric type for EcmaScript

Proposal for ECMAScript 'throw' expressions

A proposal to make grouping of array items easier

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

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.

Proposal for ECMAScript enums

Stage 2 proposal for public class fields in ECMAScript

UUID proposal for ECMAScript (Stage 1)

JavaScript Module Declarations

WeakRefs

Proposal for investigating RegExp escaping for the ECMAScript standard

a proposal to bring protocol-based interfaces to ECMAScript users

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

Shared memory and atomics for ECMAscript

TC39 proposal for accumulating errors

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

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

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

Private methods and getter/setters for ES6 classes

Get involved in specifying JavaScript

A proposal to add numeric literal separators in JavaScript.

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

A Private Fields Proposal for ECMAScript

TC39 proposal for Object.fromEntries

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

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

A JavaScript TC39 Proposal for getting the last element from an array

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

A proposal to combine Logical Operators and Assignment Expressions

Proposal for a Cancellation API for ECMAScript

Proposal to import JSON files as modules

TC39 proposal for Uint8Array<->base64/hex

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

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

Extractors for ECMAScript

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

ECMAScript proposal: String.prototype.replaceAll

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

Draft proposal for SES (Secure EcmaScript)

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

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

Documentation of how TC39 operates and how to participate

`Intl.RelativeTimeFormat` specification [draft]

proposal for flatten and flatMap on arrays

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

Proposal for a new SeededPRNG class that yields reproducible sequences of random numbers.

ECMAScript proposal: Promise.any

`a?.b = c` proposal

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

Source map specification, RFCs and new proposals.

Decorators for ECMAScript

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

Extensions proposal for ECMAScript

A proposal to make filtering arrays easier