LGTM to experiment 139-142 inclusive On Monday, June 30, 2025 at 12:34:52 PM UTC+2 Chromestatus wrote:
> Contact emails dome...@chromium.org, yyanagis...@chromium.org > > Explainer > https://gist.github.com/domenic/c5bd38339f33b49120ae11b3b4af5b9b#file-1-explainer-md > > > Specification None > > Summary > > This adds a new option, `extendedLifetime: true`, to the `SharedWorker` > constructor. This requests that the shared worker be kept alive even after > all current clients have unloaded. The primary use case is to allow pages > to perform asynchronous work that requires JavaScript after a page unloads, > without needing to rely on a service worker. > > > Blink component Blink>Workers > <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EWorkers%22> > > > TAG review https://github.com/w3ctag/design-reviews/issues/1089 > > TAG review status Pending > > Risks > > > Interoperability and Compatibility > > We intend to specify that the lifetime timeout for these shared workers be > extended in the same way as service workers. Because the exact timeout of > service workers is left implementation-defined, it's possible that code > using this new feature could be non-interoperable. However, this has so far > not proved to be a major problem in practice for service workers. > > > *Gecko*: No signal ( > https://github.com/mozilla/standards-positions/issues/1227) Some > unofficial tentative positive signals and engagement in the proposal issue. > > *WebKit*: No signal ( > https://github.com/WebKit/standards-positions/issues/492) Some unofficial > tentative negative signals in the proposal issue. > > *Web developers*: Positive The problem of wanting to perform asynchronous > work during unload is well-known, with the service worker workaround > currently deployed, including by Google properties. > > *Other signals*: > > 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 > > > Goals for experimentation > > > > Ongoing technical constraints > > None > > > Debuggability > > No special support beyond DevTools' existing shared worker inspection > support. > > > Will this feature be supported on all six Blink platforms (Windows, Mac, > Linux, ChromeOS, Android, and Android WebView)? No > > Shared workers are not yet supported on Android and Android WebView. > However, we are concurrently working on enabling them there, and when we > do, this feature will also be supported. > > > Is this feature fully tested by web-platform-tests > <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> > ? Yes > > > https://wpt.fyi/results/workers/tentative/SharedWorker-extendedLifetime.html > > > Flag name on about://flags None > > Finch feature name SharedWorkerExtendedLifetime > > Requires code in //chrome? False > > Tracking bug https://issues.chromium.org/issues/400473072 > > Estimated milestones > Origin trial desktop first 139 > Origin trial desktop last 142 > > 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). > We are currently discussing some details in preparation for specification. > The exact nature of how the lifetime extension works with regard to > non-window clients, particularly, has only recently reached a tentative > conclusion. > > Link to entry on the Chrome Platform Status > https://chromestatus.com/feature/5138641357373440?gate=5133028405542912 > > 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 blink-dev+unsubscr...@chromium.org. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/c8d1d252-7380-477e-bb51-1a4a5514e0fan%40chromium.org.
