LGTM3 On Monday, September 29, 2025 at 8:40:54 PM UTC-7 [email protected] wrote:
> LGTM2 > > > On Tue, Sep 30, 2025 at 3:22 AM Alex Russell <[email protected]> > wrote: > >> LGTM1; thank you for making this happen. >> >> On Thursday, September 25, 2025 at 8:29:29 AM UTC-7 Manish Goregaokar >> wrote: >> > *Contact emails* >>> [email protected], [email protected], [email protected] >>> >> >>> >>> *Explainer* >>> https://tc39.es/proposal-temporal/docs/ >>> https://tc39.es/proposal-temporal/ >>> >>> *Specification* >>> https://tc39.es/proposal-temporal/ >>> >>> *Summary* >>> Temporal API https://github.com/tc39/proposal-temporal in ECMA262 is a >>> new API that provides standard objects and functions for working with dates >>> and times. Date has been a long-standing pain point in ECMAScript. This >>> proposes Temporal, a global Object that acts as a top-level namespace (like >>> Math), that brings a modern date/time API to the ECMAScript language. For a >>> detailed breakdown of motivations, see: >>> https://maggiepint.com/2017/04/09/fixing-javascript-date-getting-started/ >>> >>> *Blink component* >>> Blink>JavaScript>API >>> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EJavaScript%3EAPI%22> >>> >>> *Web Feature ID* >>> temporal <https://webstatus.dev/features/temporal> >>> >>> *Search tags* >>> date <https://chromestatus.com/features#tags:date>, time >>> <https://chromestatus.com/features#tags:time>, Temporal >>> <https://chromestatus.com/features#tags:Temporal>, Rust >>> <https://chromestatus.com/features#tags:Rust> >>> >>> *TAG review* >>> This is an ECMA/TC39 feature and does not fall under W3C TAG. >>> >>> *TAG review status* >>> Not applicable >>> >>> *Risks* >>> >>> >>> *Interoperability and Compatibility* >>> Temporal allows for calendar implementations to differ in specifics. All >>> current implementors except for Safari use ICU4X for their non-ISO calendar >>> implementations. Safari doesn't appear to support the non-ISO part of the >>> spec yet. Generally, this type of incompatability is expected behavior, and >>> if not ICU4X, Safari's implementation would likely use ICU4C which is in >>> alignment with ICU4X for modern dates. >>> >>> *Gecko*: Shipped/Shipping ( >>> https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Temporal#browser_compatibility >>> ) https://github.com/mozilla/standards-positions/issues/498 >>> >>> *WebKit*: In development ( >>> https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Temporal#browser_compatibility) >>> Safari's >>> implementation is a very old version of the spec, and is very partial. >>> >>> *Web developers*: No signals >>> >>> *Other signals*: >>> >>> *Ergonomics* >>> This will be used in tandem with the Date and Intl APIs. There is no >>> thread affinity for this API. >>> >>> *Activation* >>> There are already polyfills and MDN docs out there. This library is >>> designed to be directly usable by devs. >>> >>> *Security* >>> This library calls into ICU4X, a Rust library, which might improve the >>> safety of the code. However the (autogenerated, tested) FFI layer may have >>> bugs. Overall it should not be much less secure than >>> >>> *WebView application risks* >>> >>> Does this intent deprecate or change behavior of existing APIs, such >>> that it has potentially high risk for Android WebView-based applications? >>> None >>> >>> >>> *Debuggability* >>> This suffices with "basic tooling", this is a JS API. >>> >>> *Will this feature be supported on all six Blink platforms (Windows, >>> Mac, Linux, ChromeOS, Android, and Android WebView)?* >>> YesThis feature is supported on all platforms with Rust support, which >>> includes all Chrome platforms. There are some V8 platforms this is >>> >>> *Is this feature fully tested by web-platform-tests >>> <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?* >>> YesThis is fully tested in test262. >>> https://test262.fyi/#built-ins/Temporal Note that test262 shows a low >>> percentage passing because of a bug in their infra ( >>> https://github.com/test262-fyi/data/pull/110). Locally we pass 99%. >>> >>> *Flag name on about://flags* >>> enable-javascript-harmony >>> >>> *Finch feature name* >>> None >>> >>> *Non-finch justification* >>> This is a V8/JS feature >>> >>> *Rollout plan* >>> Will ship enabled for all users >>> >>> *Requires code in //chrome?* >>> False >>> >>> *Tracking bug* >>> https://bugs.chromium.org/p/v8/issues/detail?id=11544 >>> >>> *Estimated milestones* >>> Shipping on desktop 144 >>> Shipping on Android 144 >>> Note: There is a small chance this API will be able to ship in Chrome >>> 143, but we are not aiming for that. >>> >>> *Anticipated spec changes* >>> >>> Open questions about a feature may be a source of future web compat or >>> interop issues. Please list open issues (e.g. links to known github issues >>> in the project for the feature specification) whose resolution may >>> introduce web compat/interop risk (e.g., changing to naming or structure of >>> the API in a non-backward-compatible way). None >>> >>> *Link to entry on the Chrome Platform Status* >>> https://chromestatus.com/feature/5668291307634688?gate=5961362258264064 >>> >>> This intent message was generated by Chrome Platform Status >>> <https://chromestatus.com/>. >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "blink-dev" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion visit >> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/5a902787-a54c-4c9e-88b0-30f5894d2e74n%40chromium.org >> >> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/5a902787-a54c-4c9e-88b0-30f5894d2e74n%40chromium.org?utm_medium=email&utm_source=footer> >> . >> > > > -- > TAMURA Kent > Software Engineer, Google > > > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/900acb4b-edc7-4e87-9a6b-b51c174412c8n%40chromium.org.
