By many metrics the new Temporal date-time API is the single biggest change to JS ever πŸ”₯

Temporal is now shipping in Firefox, Chrome, & soon in Safari. TS 6.0 contains type declaration support. It's in Deno, close to landing in Node, & supported by the Boa & Kiesel engines.
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Like Kiesel, V8 chose to reuse Boa's open source Rust-based temporal_rs by @jason-williams.co.uk from TechAtBloomberg, Kevin Ness, & Manish πŸ‘

boajs.dev/blog/2025/09/24/temporal-release
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