Release notes v0.47.0

release notes/v0.47.0.md

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+k6 `v0.47.0` is here 🎉! This release includes:
+
+- (_optional_) `<highlight of breaking changes>`
+- `<Summary of new features>` (_one or multiple bullets_)
+
+## Breaking changes
+
+- [#3347](https://github.com/grafana/k6/pull/3347) `statsd` output is now deprecated. Check out [#2982](https://github.com/grafana/k6/issues/2982) for the future plans.
+- [#3335](https://github.com/grafana/k6/pull/3335) Metric names will be limited to 128 characters following the OpenTelemetry update instead of the previous limit of 63 characters. k6 will return an error from the next release (v0.48.0) if the limit is hit.
+- [#3288](https://github.com/grafana/k6/pull/3288) Deprecate k6 figuring out if an import specifier is a URL by trying to resolve it by prepending `https://` in case it can't figure it out. To be fully removed v0.48.0.
+
+## New features
+
+### Add gRPC's binary metadata support [#3234](https://github.com/grafana/k6/pull/3234), [xk6-grpc#46](https://github.com/grafana/xk6-grpc/pull/46)
+
+By specification gRPC metadata with the `-bin` postfix should be treated as binary data. These PRs add the support of such metadata to the `k6/net/grpc` and `k6/experimental/grpc` modules.
+
+```js
+let resp = client.invoke("grpc.testing.TestService/EmptyCall", {}, { metadata: { "X-Load-Tester-bin": new Uint8Array([2, 200]) } })
+```
+
+Thanks, @sapphire-janrain, for contribution!
+
+### Add the reflection metadata [#3343](https://github.com/grafana/k6/pull/3343), [xk6-grpc#46](https://github.com/grafana/xk6-grpc/pull/46)
+
+In some workflows the reflection call should also include some metadata. This PR adds [a new connection parameter `reflectMetadata`](https://k6.io/docs/javascript-api/k6-net-grpc/client/client-connect/#connectparams) that allows to specify the metadata to be sent with the reflection call.
+
+### Higher precision for Trend metrics in Cloud [#3302](https://github.com/grafana/k6/pull/3302)
+
+k6 Cloud is now able to store and visualize Trend metrics up to 3 digits of precision for decimal numbers.
+
+### Docker images for Arm64 architecture [#3320](https://github.com/grafana/k6/pull/3320)
+
+k6 builds and pushes dedicated Docker images for Arm64 architecture. Check k6's [tags page](https://hub.docker.com/r/grafana/k6/tags) on DockerHub for details. 
+
+### Improved the browser module's cookie API
+
+The browser module now provides a more complete and robust API for handling cookies. We stabilized the cookie API by defining a new [`Cookie` class](https://k6.io/docs/javascript-api/k6-experimental/browser/browsercontext/cookie) ([browser#1008](https://github.com/grafana/xk6-browser/pull/1008), [browser#1030](https://github.com/grafana/xk6-browser/pull/1030)) that can be used while creating and retrieving cookies.
+
+We added a new [`browserContext.cookies([urls])`](https://k6.io/docs/javascript-api/k6-experimental/browser/browsercontext/cookies/) ([browser#1005](https://github.com/grafana/xk6-browser/pull/1005)) method that returns all cookies from the current [browser context](https://k6.io/docs/javascript-api/k6-experimental/browser/browsercontext). The new API also supports filtering cookies by URL ([browser#1016](https://github.com/grafana/xk6-browser/pull/1016)). We also fixed a bug where the `expires` field was not being set correctly while adding cookies using the [`context.addCookie()`](https://k6.io/docs/javascript-api/k6-experimental/browser/browsercontext/addcookies/) method. Lastly, we fixed the existing [`context.clearCookies()`](https://k6.io/docs/javascript-api/k6-experimental/browser/browsercontext/clearcookies) method to clear all cookies from the current [browser context](https://k6.io/docs/javascript-api/k6-experimental/browser/browsercontext).
+
+```js
+const context = browser.newContext();
+context.addCookies([
+    {name: 'foo', value: 'bar', url: 'https://test.k6.io'},
+    {name: 'baz', value: 'qux', url: 'https://grafana.com'},
+]);
+
+const cookies = context.cookies('https://test.k6.io');
+console.log(cookies.length);         // 1
+console.log(cookies[0].name);        // foo
+console.log(cookies[0].value);       // bar
+
+context.clearCookies();
+console.log(context.cookies.length); // 0
+```
+
+### Add support for browser module's `page.on('console')` [browser#1006](https://github.com/grafana/xk6-browser/pull/1006)
+
+Allows users to register a handler to be executed every time the `console` API methods are called from within the page's JavaScript context. The arguments passed into the handler are defined by the [ConsoleMessage](https://k6.io/docs/javascript-api/k6-experimental/browser/consolemessage/) class.
+
+### UX improvements and enhancements
+
+- [#3338](https://github.com/grafana/k6/pull/3338), [xk6-grpc#48](https://github.com/grafana/xk6-grpc/pull/48). Adds a support of the v1 of the gRPC reflection protocol.
+- [#3290](https://github.com/grafana/k6/pull/3290) Log errors when executing `setup` and `teardown` via REST API.
+- [#3327](https://github.com/grafana/k6/pull/3327) `k6 version` now prints the commit identifier for the build.
+- [#3340](https://github.com/grafana/k6/pull/3340) The k6 ``*-with-browser`` Docker images set now the `no-sandbox` environment variable automatically.
+
+## Bug fixes
+
+- [xk6-grpc#47](https://github.com/grafana/xk6-grpc/pull/47) Fix the premature closing of the stream when a stream's client has finished sending. Thanks, @thiagodpf, for reporting!
+- [#3344](https://github.com/grafana/k6/pull/3344), [xk6-grpc#49](https://github.com/grafana/xk6-grpc/pull/49) adds (fixes) the support of google protobuf wrappers. Thanks, @zibul444, for reporting!
+- [#3346](https://github.com/grafana/k6/pull/3346) A data race when `http.batch` it is used with binary response has been fixed.
+- [#3308](https://github.com/grafana/k6/pull/3308) `goja` version has been updated and it fixes a compiler bug when class is declared in a function with argument.
+- [browser#1040](https://github.com/grafana/xk6-browser/pull/1040) fix the `context.clearCookies()` method to clear all cookies from the current browser context.
+- [browser#1031](https://github.com/grafana/xk6-browser/pull/1031) fix the `expires` field while adding cookies using the `context.addCookie()` method.
+- [browser#1039](https://github.com/grafana/xk6-browser/pull/1039) fix Goja conversions while adding and retrieving cookies.
+
+## Maintenance and internal improvements
+
+- [#3342](https://github.com/grafana/k6/pull/3342) Updates xk6-grpc to the latest version. This change brings all the latest fixes and improvements to the experimental gRPC module.
+- [#3271](https://github.com/grafana/k6/pull/3271),[#3272](https://github.com/grafana/k6/pull/3272) Updated the golangci version and added the `interfacebloat` linter.
+- [#3279](https://github.com/grafana/k6/pull/3279) Fixed the CI not publishing the SBOM file on new a release.
+- [#3283](https://github.com/grafana/k6/pull/3283) Updated the Go version to 1.21.
+- [#3351](https://github.com/grafana/k6/pull/3351) Updated the version of Prometheus remote write output. Check the specific [release notes](https://github.com/grafana/xk6-output-prometheus-remote/releases/tag/v0.3.0).
+- [#3341](https://github.com/grafana/k6/pull/3341), [#3339](https://github.com/grafana/k6/pull/3339) Updated `goja` that includes Runtime initialization speed-up and a fix for source indexes. 
+- [#3311](https://github.com/grafana/k6/pull/3311) Updated the `alpine` image version that is used as the base of the k6 Docker image.
+
+## _Optional_ Roadmap
+
+_Discussion of future plans_
+