Advance to stage 4

[mathiasbynens]

Criteria taken from the TC39 process document minus those from previous stages:

• Test262 acceptance tests have been written for mainline usage scenarios, and merged

tc39/test262#2417

• Two compatible implementations which pass the acceptance tests

https://github.com/tc39/proposal-string-replaceall#implementations

Bug tickets to track:

• Chrome/V8: https://bugs.chromium.org/p/v8/issues/detail?id=9801
• Edge/Chakra: Implement String.prototype.replaceAll chakra-core/ChakraCore#6297
• Firefox/SpiderMonkey: https://bugzilla.mozilla.org/show_bug.cgi?id=1540021
• Safari/JavaScriptCore: https://bugs.webkit.org/show_bug.cgi?id=202471
• Moddable/XS: Implement String.prototype.replaceAll Moddable-OpenSource/moddable#288

• Significant in-the-field experience with shipping implementations, such as that provided by two independent VMs

https://github.com/tc39/proposal-string-replaceall#implementations

• A pull request has been sent to https://github.com/tc39/ecma262 with the integrated spec text

tc39/ecma262#2009 + tc39/ecma262#1716

• All ECMAScript editors have signed off on the pull request

done

[anba]

replaceAll landed in Firefox, but currently restricted to Nightly due to lack of test262 coverage.

[mathiasbynens]

Same with V8/Chrome.

[rkirsling]

This has now landed in JSC as well.

[mathiasbynens]

I've integrated the proposed spec text with the upstream spec. Pull request: tc39/ecma262#2009

[mathiasbynens]

The upstream PR has been merged! 🥳 #38 updated some of the references in this repo.