LGTM3 On Tue, Dec 2, 2025 at 9:34 PM Mike Taylor <[email protected]> wrote:
> LGTM2 > On 12/2/25 7:44 a.m., Daniel Bratell wrote: > > LGTM1 > > /Daniel > On 2025-12-02 10:48, Chromestatus wrote: > > *Contact emails* > [email protected] > > *Specification* > https://github.com/tc39/proposal-upsert > > *Summary* > ECMAScript proposal for Map.prototype.getOrInsert, > Map.prototype.getOrInsertComputed, WeakMap.prototype.getOrInsert, and > WeakMap.prototype.getOrInsertComputed. > > *Blink component* > Blink>JavaScript>Language > <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EJavaScript%3ELanguage%22> > > *Web Feature ID* > getorinsert <https://webstatus.dev/features/getorinsert> > > *Motivation* > *No information provided* > > *Initial public proposal* > *No information provided* > > *TAG review* > *No information provided* > > *TAG review status* > Not applicable > > *Risks* > > > *Interoperability and Compatibility* > *No information provided* > > *Gecko*: Shipped/Shipping ( > https://www.firefox.com/en-US/firefox/144.0/releasenotes) Firefox now > supports the upsert proposal. This adds getOrInsert and getOrInsertComputed > methods to Map and WeakMap. These methods either return the value > associated with a key, or insert a default value, and then return that > value, simplifying handling of cases where it's not known if a key is > already present in the Map or WeakMap. > > *WebKit*: Shipped/Shipping ( > https://developer.apple.com/documentation/safari-release-notes/safari-18_4-release-notes) > Added > support for Map.prototype.getOrInsert and WeakMap.prototype.getOrInsert. > (138955824) > > *Web developers*: No signals > > *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? > *No information provided* > > > *Debuggability* > *No information provided* > > *Will this feature be supported on all six Blink platforms (Windows, Mac, > Linux, ChromeOS, Android, and Android WebView)?* > No > > *Is this feature fully tested by web-platform-tests > <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?* > No > https://github.com/tc39/test262/pull/4454 > > *Flag name on about://flags* > --js-flags=--js_upsert > > *Finch feature name* > V8Flag_js_upsert > > *Rollout plan* > Will ship enabled for all users > > *Requires code in //chrome?* > False > > *Tracking bug* > https://issues.chromium.org/u/1/issues/434977728 > > *Estimated milestones* > Shipping on desktop 145 > DevTrial on desktop 143 > Shipping on Android 145 > DevTrial on Android 143 > > *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). > *No information provided* > > *Link to entry on the Chrome Platform Status* > https://chromestatus.com/feature/5201653661827072?gate=6583456041664512 > > 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/692eb5f4.050a0220.107b62.1348.GAE%40google.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/692eb5f4.050a0220.107b62.1348.GAE%40google.com?utm_medium=email&utm_source=footer> > . > > -- > 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/493b8089-dc72-4955-a0fe-aad5229c201f%40gmail.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/493b8089-dc72-4955-a0fe-aad5229c201f%40gmail.com?utm_medium=email&utm_source=footer> > . > > -- > 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/711c4a63-d054-4014-b970-ebbe909325cc%40chromium.org > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/711c4a63-d054-4014-b970-ebbe909325cc%40chromium.org?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. 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