Contact emailspth...@chromium.org, s...@chromium.org

ExplainerNone

Specificationhttps://github.com/tc39/ecma262/pull/2721

Summary

https://github.com/tc39/proposal-duplicate-named-capturing-groups


Blink componentBlink>JavaScript>Regexp
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EJavaScript%3ERegexp>

TAG reviewNone

TAG review statusNot applicable

Risks


Interoperability and Compatibility

This is a Stage 3 TC39 proposal. No known interop risk. No known web
incompatibility risk.


*Gecko*: Positive Firefox uses V8's regexp engine, so it is not actually an
independent implementation here.

*WebKit*: Shipped/Shipping (https://bugs.webkit.org/show_bug.cgi?id=252553)
Stage 3 TC39 proposal.

*Web developers*: No signals

*Other signals*:

Ergonomics

No known ergonomics risks.


Activation

This is unlikely to be polyfillable since it's adding a new kind of RegExp
syntax.


Security

No known security risks.


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

Debuggable like any other JS RegExp.


Will this feature be supported on all six Blink platforms (Windows, Mac,
Linux, ChromeOS, Android, and Android WebView)?Yes

Is this feature fully tested by web-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>
?Yes

Tested in test262. https://github.com/tc39/test262/pull/3625
https://github.com/tc39/test262/pull/3706
https://github.com/tc39/test262/pull/3709


Flag name on chrome://flags--js-regexp-duplicate-named-groups

Finch feature nameNone

Non-finch justificationNone

Requires code in //chrome?False

Estimated milestones
DevTrial on desktop 123
DevTrial on Android 123

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/5149208388829184

This intent message was generated by Chrome Platform Status
<https://chromestatus.com/>.

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