What's next in JavaScript (a TC39 update)

JS Party: JavaScript, CSS, Web Development

Daniel Ehrenberg (software engineer at Bloomberg, web standards author / champion & VP of ECMA International) joins us to discuss new features that have landed in JavaScript and to preview what’s cooking in various standards bodies across the web platform.

We cover a wide array (get it?) of topics from improvements to built-ins such as Promises, Maps & Sets, as well as new primitives like Records, Tuples & Temporal. We round out this epic discussion with a look at cross-project standardization efforts like WinterCG, open source sustainability & how Bloomberg’s open source program gives back in important projects in the web ecosystem.

Join the discussion

Changelog++ members save 5 minutes on this episode because they made the ads disappear. Join today!

Sponsors:

• Socket – Secure your supply chain and ship with confidence. Install the GitHub app, book a demo or learn more
• React Jam – React Jam is an online event where React developers come together to create games in 10 days. Let’s do this!
• Fastly – Our bandwidth partner. Fastly powers fast, secure, and scalable digital experiences. Move beyond your content delivery network to their powerful edge cloud platform. Learn more at fastly.com
• Fly.io – The home of Changelog.com — Deploy your apps and databases close to your users. In minutes you can run your Ruby, Go, Node, Deno, Python, or Elixir app (and databases!) all over the world. No ops required. Learn more at fly.io/changelog and check out the speedrun in their docs.

Featuring:

• Daniel Ehrenberg – GitHub, Mastodon, X
• Amal Hussein – GitHub, X
• Nick Nisi – Website, GitHub, Mastodon, X
• Christopher Hiller – Website, GitHub, Mastodon, X

Show Notes:

Correction: Near the end, Dan misspoke when said the Bloomberg FOSS Fund was done in partnership with Bloomberg Philanthropies. It was actually done together with Bloomberg’s Corporate Philanthropy team.

• TC39’s Active Proposals (Stage 1, 2, 3)
• TC39’s Finished Proposals (Stage 4)
• TC39 Website
• ECMA262 - Webview of the latest published specification of ECMAScript (aka JavaScript)
• ECMA262 GitHub Repo
• WinterCG
• CycloneDX
• W3C Web Performance Working Group
• Iterator Helpers Proposal
• Record and Tuple Proposal
• Temporal Proposal
• Temporal Polyfills
• Decorators Proposal
• Set Methods Proposal
• Type Annotations Proposal
• Module Expressions Proposal
• Array Grouping Proposal
• Promise with Resolvers Proposal
• Error Cause Proposal
• Test262 Github Repo
• Source Map Spec Proposal
• TC39-T4 - a new TC39 task group to standard source maps
• TC53 - ECMAScript modules for embedded systems
• Perf.Now Conference
• Node Conf EU Conference
• Dan’s talk on Async Context at this year’s Node Conf EU
• Igalia
• Bocoup
• Sentry’s blog post on recent funding of their OSS dependencies
• Bloomberg’s Terminal
• Bloomberg Open Source Program Office (OSPO) Launches FOSS Contributor Fund

Something missing or broken? PRs welcome!

บท

1. It's party time, y'all (00:00:00)

2. Sponsor: Socket (00:00:39)

https://socket.dev/?utm_source=changelog&utm_medium=podcast&utm_campaign=changelog-interviews

3. Welcome, friends (00:04:21)

4. Welcome, Dan (00:05:28)

5. What is TC39? (00:09:44)

6. Starting with Stage 4 (00:22:18)

7. Immutable types (00:25:41)

8. Moar help methods! (00:32:02)

9. Promise.withResolvers (00:38:26)

10. Array grouping (00:46:19)

11. Error cause (00:49:28)

12. Sponsor: React Jam (00:51:41)

https://reactjam.com

13. Moving on to Stage 3 (00:52:30)

14. Temporal (00:58:21)

15. Switching gears to Stage 2 (01:04:30)

16. Records & Tuples (01:04:50)

17. Module expressions (01:07:28)

18. Async context (01:12:44)

19. WinterCG's scope (01:24:13)

20. TG4 source maps (01:24:48)

21. Open source sustainability (01:29:34)

22. Closing time (01:37:45)

23. Next up on the pod (01:39:48)