---
title: "JavaScript's Biggest Update in Years (ES2027)"
url: https://daily.dev/posts/tgy2v2hsi
source_url: https://www.youtube.com/watch?v=DLT6n3wCkuc
type: share
source: "Better Stack"
author: "James"
published: 2026-08-23T18:31:30.705Z
updated: 2026-08-23T18:32:25.432Z
tags: ["webdev", "javascript"]
upvotes: 83
comments: 11
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# JavaScript's Biggest Update in Years (ES2027)

**[Better Stack](https://daily.dev/sources/betterstack)** · [@jollycoding](https://daily.dev/jollycoding) · 83 upvotes · 11 comments

## Summary

A rundown of upcoming JavaScript ES2027 features: four stage-four proposals confirmed - the Temporal API for handling dates and time zones properly, explicit resource management (the 'using' keyword) for automatic cleanup, joint iteration (iterator.zip/zipKeyed) for combining iterables, and atomics.pause for efficient busy-waiting in multi-threaded code. Also covered are stage-three proposals close behind: import defer for lazy module execution, Promise.allSettled with named results, and decorators (shipped in Bun already). A stage-one proposal for built-in reactive signals is highlighted as potentially unifying reactivity across frameworks like Angular, Vue, Svelte, and Solid. Browser and runtime support status is noted throughout, with Temporal already available in Firefox, Chrome, Node.js, and Deno, while Safari and Bun lag behind on some features.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://www.youtube.com/watch?v=DLT6n3wCkuc>

## Community discussion

Top comments from developers on daily.dev.

**@mavros\_lykos** · 2 upvotes

> ![GIF](https://static.klipy.com/ii/925f17378dd1893b674a723c07535afe/35/89/G34CdNDC.gif)

**@apperside** · 2 upvotes

> Did we really needed to wait until 2026 for proper date time handling? 🤔

**@vladsiu** · 1 upvotes

> Finally, after so many years js will handle dates and times properly…

**@seyoungcho** · 0 upvotes

> Someone fine-tune fms to use these new features more often😅

**@ajaychoudhary80** · 0 upvotes

> Temporal and explicit resource management are especially exciting—JavaScript is finally addressing some long-standing pain points.

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---

Tags: [#webdev](https://daily.dev/tags/webdev), [#javascript](https://daily.dev/tags/javascript)

[View this post on daily.dev](https://daily.dev/posts/tgy2v2hsi)