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tc39/proposal-uniform-interchange-date-parsingHTML

Proposal to standardize Date.parse behavior for interchange-like input

Last commit Sep 13, 2023

 (32 stars) (7 forks) (0 indexed issues) (0 open good first issues)
tc39/proposal-unordered-async-iterator-helpersTypeScript

JavaScript proposal for unordered async iterator helpers

Last commit Aug 7, 2024

 (21 stars) (1 fork) (0 indexed issues) (0 open good first issues)
tc39/proposal-uuidJavaScript

UUID proposal for ECMAScript (Stage 1)

Last commit Apr 2, 2021

 (458 stars) (6 forks) (0 indexed issues) (0 open good first issues)
tc39/proposal-weakrefsHTML

WeakRefs

Last commit Sep 7, 2021

 (410 stars) (38 forks) (0 indexed issues) (0 open good first issues)
tc39/proposal-well-formed-stringify

Proposal to prevent JSON.stringify from returning ill-formed strings

Last commit Jan 29, 2019

 (70 stars) (10 forks) (0 indexed issues) (0 open good first issues)
tc39/proposals

Tracking ECMAScript Proposals

Last commit May 26, 2026

 (19,119 stars) (745 forks) (0 indexed issues) (0 open good first issues)
tc39/source-map-specBikeshed

The specification of the source map format

Last commit May 4, 2024

 (35 stars) (13 forks) (0 indexed issues) (0 open good first issues)
tc39/template-for-proposalsJavaScript

A template for ECMAScript proposals

Last commit Jun 2, 2025

 (148 stars) (32 forks) (0 indexed issues) (0 open good first issues)
tc39/test262JavaScript

Official ECMAScript Conformance Test Suite

Last commit Sep 15, 2023

 (2,073 stars) (469 forks) (5 indexed issues) (5 open good first issues)
tc39/test262-parser-testsJavaScript

tests designed for ECMA-262 parsers

Last commit May 27, 2021

 (57 stars) (13 forks) (0 indexed issues) (0 open good first issues)