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CHANGELOG

All notable changes to experimental packages in this project will be documented in this file.

Unreleased

💥 Breaking Change

  • feat(otlp-exporter-base)!: collapse base classes into one #5031 @pichlermarc
    • OTLPExporterNodeBase has been removed in favor of a platform-agnostic implementation (OTLPExporterBase)
    • OTLPExporterBrowserBase has been removed in favor of a platform-agnostic implementation (OTLPExporterBase)
    • ExportServiceError was intended for internal use and has been dropped from exports
    • validateAndNormalizeHeaders was intended for internal use and has been dropped from exports
    • OTLPExporterBase all properties are now private, the constructor now takes an IOTLPExportDelegate, the type parameter for config type has been dropped.
      • This type is scheduled for removal in a future version of this package, please treat all exporters as SpanExporter, PushMetricExporter or LogRecordExporter, based on their respective type.
  • feat(otlp-grpc-exporter-base)!: collapse base classes into one #5031 @pichlermarc
    • OTLPGRPCExporterNodeBase has been removed in favor of a platform-agnostic implementation (OTLPExporterBase from @opentelemetry/otlp-exporter-base)
  • feat(otlp-transformer)!: accept ResourceMetrics in serializers instead of ResourceMetrics[]
    • (user-facing): ProtobufMetricsSerializer now only accepts ResourceMetrics instead of ResourceMetrics[] to align with PushMetricExporter requirements
    • (user-facing): JsonMetricsSerializer now only accepts ResourceMetrics instead of ResourceMetrics[] to align with PushMetricExporter requirements

🚀 (Enhancement)

  • feat(otlp-exporter-base): handle OTLP partial success #5183 @pichlermarc
  • feat(otlp-exporter-base): internally accept a http header provider function only #5179 @pichlermarc
  • refactor(otlp-exporter-base): don't create blob before sending xhr #5193 @pichlermarc
    • improves compatibility with some unsupported runtimes
  • feat(otlp-exporter-base): add http response body to exporter error #5204 @pichlermarc

🐛 (Bug Fix)

📚 (Refine Doc)

🏠 (Internal)

  • chore(otlp-exporter-*-grpc): clean up tests #5196 @pichlermarc
  • chore(otlp-exporter-*-http): clean up tests #5196 @pichlermarc
  • chore(otlp-exporter-*-proto): clean up tests #5196 @pichlermarc

0.55.0

💥 Breaking Change

  • feat(instrumentation-http)!: reduce public API surface by removing exports and making protected methods private #5124 @pichlermarc
    • (user-facing) the following exports were intended for internal use only and have been removed without replacement
      • extractHostnameAndPort
      • getAbsoluteUrl
      • getIncomingRequestAttributes
      • getIncomingRequestAttributesOnResponse
      • getIncomingRequestMetricAttributes
      • getIncomingRequestMetricAttributesOnResponse
      • getOutgoingRequestAttributes
      • getOutgoingRequestAttributesOnResponse
      • getOutgoingRequestMetricAttributes
      • getOutgoingRequestMetricAttributesOnResponse
      • getRequestInfo
      • headerCapture
      • isCompressed
      • isValidOptionsType
      • parseResponseStatus
      • satisfiesPattern
      • setAttributesFromHttpKind
      • setRequestContentLengthAttribute
      • setResponseContentLengthAttribute
      • setSpanWithError
      • RequestSignature
      • RequestFunction
      • ParsedRequestOptions
      • IgnoreMatcher
      • Https
      • HttpRequestArgs
      • HttpCallbackOptional
      • HttpCallback
      • Http
      • GetFunction
      • Func
      • Err

🚀 (Enhancement)

  • feat(sdk-node, sdk-logs): add mergeResourceWithDefaults flag, which allows opting-out of resources getting merged with the default resource #4617
    • default: true
    • note: false will become the default behavior in a future iteration in order to comply with specification requirements
  • feat(instrumentation): Track request body size in XHR and Fetch instrumentations #4706 @mustafahaddara

🐛 (Bug Fix)

  • fix(instrumentation-http): Fix the OTEL_SEMCONV_STABILITY_OPT_IN variable check. Using of instead of in #5137
  • fix(instrumentation-http): drop url.parse in favor of URL constructor #5091 @pichlermarc
    • fixes a bug where using cyrillic characters in a client request string URL would throw an exception, whereas an un-instrumented client would accept the same input without throwing an exception
  • fix(otlp-exporter-base): fix unhandled error when writing to destroyed http request #5163 @pichlermarc

0.54.2

🐛 (Bug Fix)

  • fix(instrumentation): Fix wrapping ESM files with absolute path #5094 @serkan-ozal

0.54.1

🐛 (Bug Fix)

  • fix(instrumentation-http): skip malformed forwarded headers. #5095 @pmlanger

0.54.0

💥 Breaking Change

  • feat(exporter--otlp-)!: rewrite exporter config logic for testability #4971 @pichlermarc
    • (user-facing) getDefaultUrl was intended for internal use has been removed from all exporters
    • (user-facing) getUrlFromConfig was intended for internal use and has been removed from all exporters
    • (user-facing) hostname was intended for internal use and has been removed from all exporters
    • (user-facing) url was intended for internal use and has been removed from all exporters
    • (user-facing) timeoutMillis was intended for internal use and has been removed from all exporters
    • (user-facing) onInit was intended for internal use and has been removed from all exporters
    • (user-facing) OTLP exporter config headers type changed from Partial<Record<string, unknown>> to Record<string, string>
  • feat(otlp-exporter-base)!: do not export functions that are intended for internal use #4971 @pichlermarc
    • Drops the following functions and types that were intended for internal use from the package exports:
      • parseHeaders
      • appendResourcePathToUrl
      • appendResourcePathToUrlIfNeeded
      • configureExporterTimeout
      • invalidTimeout
  • feat(instrumentation-http)!: remove long deprecated options #5085 @pichlermarc
    • ignoreIncomingPaths has been removed, use the more versatile ignoreIncomingRequestHook instead.
    • ignoreOutgoingUrls has been removed, use the more versatile ignoreOutgoingRequestHook instead.
    • isIgnored utility function was intended for internal use and has been removed without replacement.

🚀 (Enhancement)

  • feat(api-logs): Add delegating no-op logger provider #4861 @hectorhdzg
  • feat(instrumentation-http): Add support for Semantic Conventions 1.27+ #4940 #4978 #5026 @dyladan
    • Applies to client and server spans and metrics
    • Generate spans and metrics compliant with Semantic Conventions 1.27+ when OTEL_SEMCONV_STABILITY_OPT_IN contains http or http/dup
    • Generate spans and metrics backwards compatible with previous attributes when OTEL_SEMCONV_STABILITY_OPT_IN contains http/dup or DOES NOT contain http

🐛 (Bug Fix)

  • fix(sampler-jaeger-remote): fixes an issue where package could emit unhandled promise rejections @Just-Sieb
  • fix(otlp-grpc-exporter-base): default compression to 'none' if env vars OTEL_EXPORTER_OTLP_TRACES_COMPRESSION and OTEL_EXPORTER_OTLP_COMPRESSION are falsy @sjvans
  • fix(sdk-events): remove devDependencies to old @opentelemetry/[email protected], @opentelemetry/[email protected] packages #5013 @pichlermarc
  • fix(sdk-logs): remove devDependencies to old @opentelemetry/[email protected] #5013 @pichlermarc
  • fix(sdk-logs): align LogRecord#setAttribute type with types from @opentelemetry/[email protected] #5013 @pichlermarc
  • fix(exporter--otlp-): fixes a bug where signal-specific environment variables would not be applied and the trace-specific one was used instead #4971 @pichlermarc
    • Fixes:
      • OTEL_EXPORTER_OTLP_METRICS_COMPRESSION
      • OTEL_EXPORTER_OTLP_LOGS_COMPRESSION
      • OTEL_EXPORTER_OTLP_METRICS_CLIENT_CERTIFICATE
      • OTEL_EXPORTER_OTLP_LOGS_CLIENT_CERTIFICATE
      • OTEL_EXPORTER_OTLP_METRICS_CLIENT_KEY
      • OTEL_EXPORTER_OTLP_LOGS_CLIENT_KEY
      • OTEL_EXPORTER_OTLP_METRICS_INSECURE
      • OTEL_EXPORTER_OTLP_LOGS_INSECURE
  • fix(sdk-node): use warn instead of error on unknown OTEL_NODE_RESOURCE_DETECTORS values #5034
  • fix(exporter-logs-otlp-proto): Use correct config type in Node constructor
  • fix(instrumentation-http): Fix instrumentation of http.get, http.request, https.get, and https.request when used from ESM code and imported via the import defaultExport from 'http' style. #5024 @trentm

🏠 (Internal)

  • refactor(exporter-prometheus): replace MetricAttributes and MetricAttributeValues with Attributes and AttributeValues #4993

  • refactor(browser-detector): replace ResourceAttributes with Attributes #5004

  • refactor(sdk-logs): replace ResourceAttributes with Attributes #5005 @david-luna

0.53.0

💥 Breaking Change

  • fix(instrumentation)!:remove unused description property from interface #4847 @blumamir
  • feat(exporter--otlp-)!: use transport interface in node.js exporters #4743 @pichlermarc
    • (user-facing) headers was intended for internal use has been removed from all exporters
    • (user-facing) compression was intended for internal use and has been removed from all exporters
    • (user-facing) hostname was intended for use in tests and is not used by any exporters, it will be removed in a future release
  • fix(exporter--otlp-)!: ensure User-Agent header cannot be overwritten by the user #4743 @pichlermarc
    • allowing overrides of the User-Agent header was not specification compliant.
  • feat(exporter--otlp)!: remove environment-variable specific code from browser exporters
    • (user-facing) removes the ability to configure browser exporters by using process.env polyfills
  • feat(sdk-node)!: Automatically configure logs exporter #4740
  • feat(exporter--otlp-)!: use transport interface in browser exporters #4895 @pichlermarc
    • (user-facing) protected headers property was intended for internal use has been removed from all exporters

🚀 (Enhancement)

  • feat(otlp-transformer): Do not limit @opentelemetry/api upper range peerDependency #4816 @mydea
  • feat(instrumentation-http): Allow to opt-out of instrumenting incoming/outgoing requests #4643 @mydea
  • feat(sampler-jaeger-remote): added support of jaeger-remote-sampler according to this spec #4534 @legalimpurity

🐛 (Bug Fix)

  • fix(instrumentation): ensure .setConfig() results in config.enabled defaulting to true #4941 @trentm
  • fix(instrumentation-http): Ensure instrumentation of http.get and https.get work when used in ESM code #4857 @trentm
  • fix(api-logs): align AnyValue to spec #4893 @blumamir
  • fix(instrumentation): remove diag.debug() message for instrumentations that do not patch modules #4925 @trentm

🏠 (Internal)

  • refactor: Simplify the code for the getEnv function #4799 @danstarns
  • refactor: remove "export *" in favor of explicit named exports #4880 @robbkidd
    • Packages updated:
      • api-events
      • api-logs
      • opentelemetry-browser-detector
      • opentelemetry-exporter-prometheus
      • opentelemetry-instrumentation-fetch
      • opentelemetry-instrumentation-http
      • opentelemetry-instrumentation-xml-http-request
      • opentelemetry-instrumentation

0.52.1

🚀 (Enhancement)

  • refactor(instrumentation-fetch): move fetch to use SEMATRR #4632
  • refactor(otlp-transformer): use explicit exports #4785 @pichlermarc

🐛 (Bug Fix)

  • fix(sdk-node): register context manager if no tracer options are provided #4781 @pichlermarc
  • fix(instrumentation): Update import-in-the-middle to fix numerous bugs #4806 @timfish
  • chore(instrumentation): Use a caret version for import-in-the-middle dependency #4810 @timfish

🏠 (Internal)

  • test: add npm run maint:regenerate-test-certs maintenance script and regenerate recently expired test certs #4777

0.52.0

💥 Breaking Change

  • feat(exporter--otlp-)!: move serialization for Node.js exporters to @opentelemetry/otlp-transformer #4542 @pichlermarc
    • Breaking changes:
      • (user-facing) convert() now returns an empty object and will be removed in a follow-up
      • (internal) OTLPExporterNodeBase now has additional constructor parameters that are required
      • (internal) OTLPExporterNodeBase now has an additional ResponseType type parameter
  • feat(exporter--otlp-)!: move serialization for Node.js exporters to @opentelemetry/otlp-transformer #4581 @pichlermarc
    • Breaking changes:
      • (user-facing) convert() has been removed from all exporters
      • (internal) OTLPExporterBrowserBase: RequestType has been replaced by a ResponseType type-argument
      • (internal) OTLPExporterNodeBase: ServiceRequest has been replaced by a ServiceResponse type-argument
      • (internal) the @opentelemetry/otlp-exporter-proto-base package has been removed, and will from now on be deprecated in npm
  • feat(instrumentation): remove default value for config in base instrumentation constructor #4695: @blumamir
  • fix(instrumentation)!: remove unused supportedVersions from Instrumentation interface #4694 @blumamir
  • feat(instrumentation)!: simplify registerInstrumentations() API
    • Breaking changes:
      • removes InstrumentationOptions type
      • occurrences of InstrumentationOptions are now replaced by (Instrumentation | Instrumentation[])[]
        • migrate usages of registerInstrumentations({instrumentations: fooInstrumentation}) to registerInstrumentations({instrumentations: [fooInstrumentation]})
        • passing Instrumentation classes to registerInstrumentations() is now not possible anymore.
  • feat(sdk-node)!: simplify type of instrumentations option
    • Breaking changes:
      • replaces InstrumentationOptions with (Instrumentation | Instrumentation[])[]

🚀 (Enhancement)

  • feat(instrumentation): apply unwrap before wrap in base class #4692
  • feat(instrumentation): add util to execute span customization hook in base class #4663 @blumamir
  • feat(instrumentation): generic config type in instrumentation base #4659 @blumamir
  • feat: support node 22 #4666 @dyladan
  • feat(propagator-aws-xray-lambda): add AWS Xray Lambda propagator 4554
  • refactor(instrumentation-xml-http-request): use exported strings for semantic attributes. #4681
  • refactor(sdk-node): Use tree-shakeable string constants for semconv #4767 @JohannesHuster

🐛 (Bug Fix)

📚 (Refine Doc)

  • docs(instrumentation): better docs for supportedVersions option #4693 @blumamir
  • docs: align all supported versions to a common format #4696 @blumamir
  • refactor(examples): use new exported string constants for semconv in experimental/examples/opencensus-shim #4763 @Zen-cronic

0.51.1

🐛 (Bug Fix)

  • fix(instrumentation): update import-in-the-middle to 1.7.4

0.51.0

💥 Breaking Change

  • feat(sdk-node)!: remove long deprecated methods in favor of constructor options #4606 @pichlermarc
    • NodeSDK.configureTracerProvider(), please use constructor options instead
    • NodeSDK.configureMeterProvider(), please use constructor options instead
    • NodeSDK.configureLoggerProvider(), please use constructor options instead
    • NodeSDK.addResource(), please use constructor options instead
    • NodeSDK.detectResources(), this is not necessary anymore, resources are now auto-detected on NodeSDK.start() if the constructor option autoDetectResources is unset, undefined or true.
  • feat(instrumentation): add patch and unpatch diag log messages #4641
    • Instrumentations should not log patch and unpatch messages to diag channel.
  • feat!(instrumentation): remove moduleExports generic type from instrumentation registration #4598 @blumamir
    • breaking for instrumentation authors that depend on
      • InstrumentationBase
      • InstrumentationNodeModuleDefinition
      • InstrumentationNodeModuleFile
  • feat(api-events): removed traceId and spanId from Event interface, added context and severityNumber #4629

🚀 (Enhancement)

  • feat(sdk-logs): log resource attributes in ConsoleLogRecordExporter #4646 @harelmo-lumigo
  • refactor(instrumentation-grpc): move to use SEMATTRS #4633
  • feat(otlp-transformer): consolidate scope/resource creation in transformer #4600
  • feat(sdk-logs): print message when attributes are dropped due to attribute count limit #4614 @HyunnoH
  • feat(sdk-node): add usage for the detector ServiceInstanceIdDetectorSync. #4626 @maryliag
    • The resource detector can be added to default resource detector list by adding the value serviceinstance to the list of resource detectors on the environment variable OTEL_NODE_RESOURCE_DETECTORS, e.g OTEL_NODE_RESOURCE_DETECTORS=env,host,os,serviceinstance
    • The value can be overwritten by
      • merging a resource containing the service.instance.id attribute
      • using another resource detector which writes service.instance.id
  • feat(sdk-events): add Events SDK #4629

🐛 (Bug Fix)

  • fix(otlp-grpc-exporter-base): avoid TypeError on exporter shutdown #4612 @pichlermarc
  • fix(instrumentation): Don't use require to load package.json files #4593 @timfish

0.50.0

💥 Breaking Change

  • fix(exporter-*-otlp-grpc)!: lazy load gRPC to improve compatibility with @opentelemetry/instrumenation-grpc #4432 @pichlermarc
    • Fixes a bug where requiring up the gRPC exporter before enabling the instrumentation from @opentelemetry/instrumentation-grpc would lead to missing telemetry
    • Breaking changes, removes several functions and properties that were used internally and were not intended for end-users
      • getServiceClientType()
        • this returned a static enum value that would denote the export type (SPAN, METRICS, LOGS)
      • getServiceProtoPath()
        • this returned a static enum value that would correspond to the gRPC service path
      • metadata
        • was used internally to access metadata, but as a side effect allowed end-users to modify metadata on runtime.
      • serviceClient
        • was used internally to keep track of the service client used by the exporter, as a side effect it allowed end-users to modify the gRPC service client that was used
      • compression
        • was used internally to keep track of the compression to use but was unintentionally exposed to the users. It allowed to read and write the value, writing, however, would have no effect.

🚀 (Enhancement)

  • feat(instrumentation-xhr): optionally ignore network events #4571 @mustafahaddara
  • refactor(instrumentation-http): use exported strings for semconv #4573 @JamieDanielson
  • perf(instrumentation-http): remove obvious temp allocations #4576 @Samuron
  • feat(sdk-node): add HostDetector as default resource detector #4566 @maryliag
  • feat(api-events): added data field to the Event interface #4575 @martinkuba

🐛 (Bug Fix)

  • fix(exporter--otlp-): use parseHeaders() to ensure header-values are not 'undefined' #4540
    • Fixes a bug where passing undefined as a header value would crash the end-user app after the export timeout elapsed.
  • fix(sdk-logs): ensure default resource attributes are used as fallbacks when a resource is passed to LoggerProvider.

📚 (Refine Doc)

  • docs(instrumentation-http): document semantic conventions and attributes in use. #4587 @JamieDanielson

0.49.1

🐛 (Bug Fix)

  • fix(instrumentation): don't add @opentelemetry/api-logs as a peerDependency

0.49.0

💥 Breaking Change

  • fix(otlp-exporter-base)!: remove unload event from OTLPExporterBrowserBase #4438 @eldavojohn
    • Reason: The 'unload' event prevents sites from taking advantage of Google's backward/forward cache and will be deprecated. It is now up to the consuming site to implement these shutdown events.
    • This breaking change affects users under this scenario:
      1. A user extends the exporter and overrides the shutdown function, and does something which is usually called by the unload listener
      2. We remove the unload event listener
      3. That user's overridden shutdown function no longer gets called

🚀 (Enhancement)

  • feat(instrumentation): allow LoggerProvider to be specified in Instrumentations #4314 @hectorhdzg
  • feat(instrumentation): add getModuleDefinitions() to InstrumentationBase #4475 @pichlermarc
  • feat(exporter-metrics-otlp-http): add option to set the exporter aggregation preference #4409 @AkselAllas
  • feat(node-sdk): add spanProcessors option #4454 @naseemkullah

🐛 (Bug Fix)

  • fix(sdk-node): allow using samplers when the exporter is defined in the environment #4394 @JacksonWeber
  • fix(instrumentation): normalize paths for internal files in scoped packages #4467 @pichlermarc
    • Fixes a bug where, on Windows, internal files on scoped packages would not be instrumented.
  • fix(otlp-transformer): only use BigInt inside hrTimeToNanos() #4484 @pichlermarc
  • fix(instrumentation-fetch): do not enable in Node.js; clarify in docs this instr is for web fetch only #4498 @trentm

🏠 (Internal)

  • refactor(instrumentation-grpc): clean up remnants of 'grpc' package instrumentation #4420 @pichlermarc

0.48.0

💥 Breaking Change

  • fix(instrumentation)!: pin [email protected] #4441
    • Fixes a bug where, in some circumstances, ESM instrumentation packages would try to instrument CJS exports on ESM, causing the end-user application to crash.
    • This breaking change only affects users that are using the experimental @opentelemetry/instrumentation/hook.mjs loader hook AND Node.js 18.19 or later:
      • This reverts back to an older version of import-in-the-middle due to nodejs/import-in-the-middle#57
      • This version does not support Node.js 18.19 or later

🐛 (Bug Fix)

  • fix(exporter-prometheus): avoid invoking callback synchronously #4431 @legendecas
  • fix(exporter-logs-otlp-grpc): set User-Agent header #4398 @Vunovati
  • fix(exporter-logs-otlp-http): set User-Agent header #4398 @Vunovati
  • fix(exporter-logs-otlp-proto): set User-Agent header #4398 @Vunovati
  • fix(instrumentation-fetch): compatibility with Map types for fetch headers

🏠 (Internal)

  • refactor(exporter-prometheus): promisify prometheus tests #4431 @legendecas

0.47.0

💥 Breaking Change

  • fix(exporter-logs-otlp-http)!: programmatic headers take precedence over environment variables #2370 @Vunovati
  • fix(exporter-logs-otlp-proto)!: programmatic headers take precedence over environment variables #2370 @Vunovati
  • fix(exporter-trace-otlp-http)!: programmatic headers take precedence over environment variables #2370 @Vunovati
  • fix(exporter-trace-otlp-proto)!: programmatic headers take precedence over environment variables #2370 @Vunovati

🐛 (Bug Fix)

  • fix(instrumentation): use caret range on import-in-the-middle #4380 @pichlermarc
  • fix(instrumentation): do not import 'path' in browser runtimes #4386 @pichlermarc
    • Fixes a bug where bundling for web would fail due to InstrumentationNodeModuleDefinition importing path

0.46.0

💥 Breaking Change

  • fix(exporter-metrics-otlp-grpc): programmatic headers take precedence over environment variables #2370 @Vunovati
  • fix(exporter-metrics-otlp-http): programmatic headers take precedence over environment variables #2370 @Vunovati
  • fix(exporter-metrics-otlp-proto): programmatic headers take precedence over environment variables #2370 @Vunovati
  • fix(otlp-exporter-base)!: decrease default concurrency limit to 30 #4211 @pichlermarc
    • fixes a memory leak on prolonged collector unavailability
    • this change is marked as breaking as it changes defaults

🚀 (Enhancement)

  • feat(sdk-logs): add droppedAttributesCount field to ReadableLogRecord

🐛 (Bug Fix)

  • fix(sdk-logs): await async resources in log processors
  • fix(sdk-logs): avoid map attribute set when count limit exceeded
  • fix(instrumentation-fetch): only access navigator if it is defined #4063
    • allows for experimental usage of this instrumentation with non-browser runtimes
  • fix(instrumentation-http): memory leak when responses are not resumed
  • fix(instrumentation-http): Do not mutate given headers object for outgoing http requests. Fixes aws-sdk signing error on retries. #4346
  • fix(instrumentation): support Node.js v18.19.0 by using [email protected]

0.45.1

🐛 (Bug Fix)

  • Bumps all dependencies to explicitly include Stable v1.18.1 packages

0.45.0

💥 Breaking Change

  • fix(sdk-node)!: remove the explicit dependency on @opentelemetry/exporter-jaeger that was kept on the previous release
    • '@opentelemetry/exporter-jaeger' is no longer be a dependency of this package. To continue using '@opentelemetry/exporter-jaeger', please install it manually.
      • NOTE: @opentelemetry/exporter-jaeger is deprecated, consider switching to one of the alternatives described here
  • fix(otlp-transformer)!: OTLP json encoding #4220 @seemk
    • Fixes a bug in the OTLP (http/json) exporters where timestamps were not encoded as strings, causing the export to be rejected by OTLP endpoints

0.44.0

💥 Breaking Change

  • fix(exporter-logs-otlp-proto): change OTLPLogExporter to OTLPLogExporter #4140 @Vunovati
  • fix(sdk-node): remove explicit dependency on @opentelemetry/exporter-jaeger
    • '@opentelemetry/exporter-jaeger' is no longer be a dependency of this package. To continue using '@opentelemetry/exporter-jaeger', please install it manually.
      • NOTE: @opentelemetry/exporter-jaeger is deprecated, consider switching to one of the alternatives described here
  • fix(sdk-logs): hide internal methods with internal shared state #3865 @legendecas

🚀 (Enhancement)

  • feat(exporter-metrics-otlp-proto): add esm build #4099 @pichlermarc
  • feat(opencensus-shim): implement OpenCensus metric producer #4066 @aabmass

🐛 (Bug Fix)

  • fix(otlp-exporter-base): replaced usage of window with _globalThis #4157 @cristianmadularu
  • fix(otlp-transformer): Avoid precision loss when converting from HrTime to unix nanoseconds. #4062

0.43.0

🐛 (Bug Fix)

  • Revert "feat(api): add attributes argument to recordException API #4071"
    • This feature was an unintentional breaking change introduced with API 1.5.0
    • This PR updates all experimental packages to allow API 1.6.0, where this change has been reverted.

0.42.0

💥 Breaking Change

  • chore(sdk-node): deprecate methods in favor of constructor options #3996 @pichlermarc
    • The following methods are now deprecated and will be removed in 0.43.0
      • NodeSDK.configureTracerProvider(), please use constructor options instead
      • NodeSDK.configureMeterProvider(), please use constructor options instead
      • NodeSDK.configureLoggerProvider(), please use constructor options instead
      • NodeSDK.addResource(), please use constructor options instead
      • NodeSDK.detectResources(), this is not necessary anymore, resources are now auto-detected on startup.
  • chore(sdk-node): add notice that '@opentelemetry/exporter-jaeger' has to be installed manually in the next version #4068 @pichlermarc
    • Starting with 0.43.0 '@opentelemetry/exporter-jaeger' will no longer be a dependency of this package. To continue using '@opentelemetry/exporter-jaeger', please install it manually.
      • NOTE: @opentelemetry/exporter-jaeger is deprecated, consider switching to one of the alternatives described here

🚀 (Enhancement)

  • feat: update PeriodicExportingMetricReader and PrometheusExporter to accept optional metric producers #4077 @aabmass

🐛 (Bug Fix)

  • fix(exporter-logs-otlp-http): add @opentelemetry/api-logs as dependency

0.41.2

🐛 (Bug Fix)

  • fix(opentelemetry-exporter-logs-otlp-http): Add otel-api as dev dep for tests as they are directly importing the api and which is breaking the web-sandbox tests which is using rollup
  • fix(instrumentation-grpc): instrument @grpc/grpc-js Client methods #3804 @pichlermarc

0.41.1

📚 (Refine Doc)

  • docs(sdk-metrics): add example of exponential histogram metric #3855 @JamieDanielson

🚀 (Enhancement)

  • feat(sdk-node): logs support added #3969 @psk001

🐛 (Bug Fix)

  • Revert "feat(minification): Add noEmitHelpers, importHelpers and tslib as a dependency (#3914)" #4011 @dyladan

0.41.0

💥 Breaking Change

  • chore(instrumentation-grpc): Drop support for package grpc. #3807 @llc1123

🚀 (Enhancement)

  • feat(otlp-grpc-exporters): add support for UDS endpoints. #3853 @llc1123
  • feat(otlp-exporters): bump otlp proto to 0.20.0 #3932 @pichlermarc
  • feat(exporter-metrics-otlp-*): add LowMemory metrics temporality preference #3915 @martinkuba

🐛 (Bug Fix)

  • fix(exporter-logs-otlp-http): set useHex to true #3875 @Nico385412
  • fix(otlp-proto-exporter-base): add missing type import #3937 @pichlermarc
  • fix(example-opencensus-shim): avoid OpenCensus auto instrumentations #3951 @llc1123
  • fix(http-intrumentation): prevent request socket null from throwing uncaught error #3858 @aodysseos

🏠 (Internal)

  • chore(instrumentation-grpc): Cleanup remnants of grpc-native support. #3886 @llc1123

0.40.0

💥 Breaking Change

  • fix(exporter-logs-otlp-grpc): change OTLPLogsExporter to OTLPLogExporter #3819 @fuaiyi
  • chore(instrumentation-grpc): add 'grpc' deprecation notice postinstall script #3833 @pichlermarc
    • Support for telemetry generation for the grpc module will be dropped in the next release as the package has been deprecated for over 1 year, please migrate to @grpc/grpc-js to continue receiving telemetry.

🚀 (Enhancement)

  • feat(api-logs): support map in log attributes. #3821 @Abinet18
  • feat(instrumentation): add ESM support for instrumentation. #3698 @JamieDanielson, @pkanal, @vmarchaud, @lizthegrey, @bengl
  • feat(exporter-logs-otlp-http): otlp-http exporter for logs. #3764 @fuaiyi
  • feat(otlp-trace-exporters): Add User-Agent header to OTLP trace exporters. #3790 @JamieDanielson
  • feat(otlp-metric-exporters): Add User-Agent header to OTLP metric exporters. #3806 @JamieDanielson
  • feat(opencensus-shim): add OpenCensus trace shim #3809 @aabmass
  • feat(exporter-logs-otlp-proto): protobuf exporter for logs. #3779 @Abinet18

🐛 (Bug Fix)

  • fix(sdk-node): use resource interface instead of concrete class #3803 @blumamir
  • fix(sdk-logs): remove includeTraceContext configuration and use LogRecord context when available #3817 @hectorhdzg

0.39.1

🐛 (Bug Fix)

  • fix(otlp-transformer): move api-logs to dependencies #3798 @pichlermarc

0.39.0

🚀 (Enhancement)

  • feat(otlp-transformer): support log records. #3712 @llc1123
  • feat(otlp-grpc-exporter-base): support log records. #3712 @llc1123
  • feat(exporter-logs-otlp-grpc): otlp-grpc exporter for logs. #3712 @llc1123
  • feat(otlp-grpc-exporter-base): use statically generated protobuf code #3705 @pichlermarc
  • refactor(otlp-transformer): refine metric transformers. #3770 @llc1123
  • feat(api-logs): add ObservedTimestamp to LogRecord. #3787 @llc1123

🐛 (Bug Fix)

  • fix(instrumentation): update require-in-the-middle to v7.1.0 #3727 @trentm
  • fix(instrumentation): update require-in-the-middle to v7.0.1 #3743 @trentm

📚 (Refine Doc)

  • doc(instrumentation): add limitiations section to readme #3786 @flarna

0.38.0

💥 Breaking Change

  • fix: remove HTTP/HTTPS prefix from span name in instrumentation-xml-http-request #3672 @jufab
  • fix(sdk-node)!: remove unused defaultAttributes option #3724 @pichlermarc
    • Please use NodeSDKConfiguration.resource instead

🚀 (Enhancement)

  • feat(sdk-logs): use logs API 0.38

🐛 (Bug Fix)

  • fix(sdk-node): only set DiagConsoleLogger when OTEL_LOG_LEVEL is set #3693 @pichlermarc

0.37.0

💥 Breaking Change

  • fix: remove HTTP/HTTPS prefix from span name in instrumentation-xml-http-request #3672 @jufab

🚀 (Enhancement)

  • feat(api-logs): 1.LogRecord fields update: traceFlags/traceId/spanId -> context; 2.Logger supports configuring includeTraceContext; 3.The onEmit method of LogRecordProcessor supports the context field. #3549 @fuaiyi
  • feat(sdk-logs): logs sdk implementation. #3549 @fuaiyi

0.36.0

💥 Breaking Change

  • feat: remove HTTP/HTTPS prefix from span name #3603 @Flarna

🚀 (Enhancement)

  • feat: use HTTP_ROUTE in span name #3603 @Flarna
  • feat: add HTTP_ROUTE attribute to http incoming metrics if present #3581 @hermogenes
  • feat(opentelemetry-instrumentation-grpc): allow to add attributes from grpc metadata in the patched server #3589 @zombispormedio
  • feat(sdk-node): install diag logger with OTEL_LOG_LEVEL #3627 @legendecas
  • feat(otlp-exporter-base): add retries #3207 @svetlanabrennan
  • feat(sdk-node): override IdGenerator when using NodeSDK #3645 @haddasbronfman
  • feat(otlp-transformer): expose dropped attributes, events and links counts on the transformed otlp span #3576 @mohitk05

🐛 (Bug Fix)

  • fix(prometheus-exporter): add possibility to respond to errors returned by server.listen() #3552 @pichlermarc
  • fix(sdk-node): update instrumentations once MeterProvider is initialized #3624 @pichlermarc

0.35.1

🐛 (Bug Fix)

  • fix: remove JSON syntax error and regenerate tsconfig files #3566 @Flarna
    • Fixes an error where the generated JS files were not included in the esnext package due to a failure of the tsconfig generation
  • fix(sdk-node): register instrumentations early #3502 @flarna
  • fix: include tracestate in export #3569 @flarna
  • fix(http) Remove outgoing headers normalization #3557 @marcinjahn

0.35.0

🚀 (Enhancement)

  • feat(instrumentation-http): monitor error events with events.errorMonitor #3402 @legendecas
  • feat(instrumentation-grpc): added grpc metadata client side attributes in instrumentation #3386
  • feat(instrumentation): add new _setMeterInstruments protected method that update the meter instruments every meter provider update.
  • feat(api-logs): add the SeverityNumber enumeration. #3443 @fuaiyi
  • feat(sdk-node): configure no-op sdk with OTEL_SDK_DISABLED environment variable #3485 @RazGvili

🐛 (Bug Fix)

  • fix(instrumentation-xhr): http.url attribute should be absolute #3200 @t2t2
  • fix(instrumentation-grpc): always set grpc semcov status code attribute with numeric value #3076 @blumamir
  • fix(instrumentation): only call onRequire for full matches on core modules with sub-paths #3451 @mhassan1
  • fix(instrumentation): add back support for absolute paths via require-in-the-middle #3457 @mhassan1
  • fix(prometheus-sanitization): replace repeated _ with a single _ 3470 @samimusallam
  • fix(prometheus-serializer): correct string used for NaN #3477 @JacksonWeber
  • fix(instrumentation-http): close server span when response finishes #3407 @legendecas
  • fix(instrumentation-fetch): make spans resilient to clock drift by using Date.now #3434 @dyladan
  • fix(instrumentation-xml-http-request): make spans resilient to clock drift by using Date.now #3434 @dyladan
  • fix(sdk-node): fix exporter to be read only OTEL_TRACES_EXPORTER is set to a valid exporter [3492] @svetlanabrennan

🏠 (Internal)

  • chore(otlp-proto-exporter-base): upgrade protobufjs to 7.1.2 and relax versioning #3433 @seemk

0.34.0

  • @opentelemetry/sdk-metrics moved to packages/sdk-metrics
  • @opentelemetry/api-metrics deprecated and merged into api

🚀 (Enhancement)

  • feat(metrics-sdk): Add tracing suppresing for Metrics Export #3332 @hectorhdzg
  • feat(instrumentation): implement require-in-the-middle singleton #3161 @mhassan1
  • feat(sdk-node): configure trace exporter with environment variables #3143 @svetlanabrennan
  • feat: enable tree shaking #3329 @pkanal
  • feat(prometheus): serialize resource as target_info gauge #3300 @pichlermarc
  • feat(detectors): add browser detector module #3292 @abinet18
  • deps: remove unused proto-loader dependencies and update grpc-js and proto-loader versions #3337 @seemk
  • feat(metrics-exporters): configure temporality via environment variable #3305 @pichlermarc
  • feat(console-metric-exporter): add temporality configuration #3387 @pichlermarc

🐛 (Bug Fix)

  • fix(node-sdk): move @opentelemetry/semantic-conventions to dependencies #3283 @mhassan1
  • fix(exporters): do not append trailing '/' when URL contains path #3274 @pichlermarc
  • fix(instrumentation): debug log on no modules defined for instrumentation #3308 @legendecas

📚 (Refine Doc)

  • docs(metrics-exporters): fix wrong exporter const name in example #3270 @pichlermarc

🏠 (Internal)

  • ci(instrumentation-http): remove got devDependency #3347 @dyladan
  • deps(instrumentation-http): move sdk-metrics to dev dependencies #3380 @pichlermarc

0.33.0

💥 Breaking Change

  • Add resourceDetectors option to NodeSDK #3210

    • NodeSDK.detectResources() function is no longer able to receive config as a parameter. Instead, the detectors are passed to the constructor.

  • chore(metrics-sdk): clean up exports #3197 @pichlermarc

    • removes export for:
      • AccumulationRecord
      • Aggregator
      • AggregatorKind
      • Accumulation
      • createInstrumentDescriptor
      • createInstrumentDescriptorWithView
      • isDescriptorCompatibleWith

  • chore(api-metrics): clean up exports #3198 @pichlermarc

    • removes export for:
      • NOOP_COUNTER_METRIC
      • NOOP_HISTOGRAM_METRIC
      • NOOP_METER_PROVIDER
      • NOOP_OBSERVABLE_COUNTER_METRIC
      • NOOP_OBSERVABLE_GAUGE_METRIC
      • NOOP_OBSERVABLE_UP_DOWN_COUNTER_METRIC
      • NOOP_UP_DOWN_COUNTER_METRIC
      • NoopCounterMetric
      • NoopHistogramMetric
      • NoopMeter
      • NoopMeterProvider
      • NoopMetric
      • NoopObservableCounterMetric
      • NoopObservableGaugeMetric
      • NoopObservableMetric
      • NoopObservableUpDownCounterMetric
      • NoopUpDownCounterMetric

  • feat(sdk-metrics): align MetricReader with specification and other language implementations #3225 @pichlermarc

  • chore(sdk-metrics): remove accidental export of the SDK Meter class #3243 @pichlermarc

🚀 (Enhancement)

  • Add resourceDetectors option to NodeSDK #3210
  • feat: add Logs API @mkuba #3117

📚 (Refine Doc)

  • docs(sdk-metrics): fix typos and add missing parameter docs. #3244 @pichlermarc

🏠 (Internal)

  • ci(instrumentation-http): improve metrics test stability #3242 @pichlermarc
  • deps: remove unused protobufjs and update used ones to 7.1.1 #3251 #3251 @pichlermarc

0.32.0

💥 Breaking Change

  • Rename @opentelemetry/sdk-metrics-base package to @opentelemetry/sdk-metrics #3162 @hectorhdzg

🚀 (Enhancement)

  • feature(instrumentation-http): Add HTTP Server and Client duration Metrics in HTTP Node.js Instrumentation #3149 @hectorhdzg
  • fix(add-views-to-node-sdk): added the ability to define meter views in NodeSDK #3066 @weyert
  • feature(add-console-metrics-exporter): add ConsoleMetricExporter #3120 @weyert
  • feature(prometheus-serialiser): export the unit block when unit is set in metric descriptor #3066 @weyert
  • feat: support latest @opentelemetry/api #3177 @dyladan
  • feat(sdk-metrics-base): add per metric-reader aggregation support #3153 @legendecas
  • chore(deps): update prometheus example dependencies to 0.32 #3126 @avzis
  • feature(opentelemetry-api-metrics): Adding generics to create{metricType} #3151 @tomerghelber-tm

🐛 (Bug Fix)

  • fix(instrumentation-http): add http.host attribute before sending the request #3054 @cuichenli

0.31.0

💥 Breaking Change

  • feature(views): move views registration to MeterProvider constructor #3066 @pichlermarc
  • feat(sdk-metrics-base): split up Singular into Sum and Gauge in MetricData #3079 @pichlermarc
    • removes DataPointType.SINGULAR, and replaces it with DataPointType.SUM and DataPointType.GAUGE
    • removes SingularMetricData and replaces it with SumMetricData (including an additional isMonotonic flag) and GaugeMetricData
  • feat(histogram): align collection of optional Histogram properties with spec #3102 @pichlermarc
    • changes type of sum property on Histogram to number | undefined
    • changes type of min and max properties on Histogram to number | undefined
    • removes hasMinMax flag on the exported Histogram - this is now indicated by min and max being undefined

🚀 (Enhancement)

  • feat(metrics-api): use common attributes definitions #3038 @legendecas
  • feat(otlp-proto): pre-compile proto files #3098 @legendecas
  • feat(opentelemetry-sdk-metrics-base): added InMemoryMetricExporter #3039 @weyert

🐛 (Bug Fix)

  • fix(histogram): fix maximum when only values < -1 are provided #3086 @pichlermarc
  • fix(instrumentation-grpc): always set grpc semcov status code attribute with numeric value #3076 @blumamir

0.30.0

💥 Breaking Change

  • fix: remove aws and gcp detector from SDK #3024 @flarna
  • feat(sdk-metrics-base): implement min/max recording for Histograms #3032 @pichlermarc

🚀 (Enhancement)

  • feat(opentelemetry-instrumentation-fetch): optionally ignore network events #3028 @gregolsen
  • feat(http-instrumentation): record exceptions in http instrumentation #3008 @luismiramirez
  • feat(node-sdk): add serviceName config option #2867 @naseemkullah
  • feat(opentelemetry-exporter-prometheus): export PrometheusSerializer #3034 @matschaffer
  • feat(sdk-metrics-base): detect resets on async metrics #2990 @legendecas
    • Added monotonicity support in SumAggregator.
    • Added reset and gaps detection for async metric instruments.
    • Fixed the start time and end time of an exported metric with regarding to resets and gaps.

🐛 (Bug Fix)

  • fix(otlp-transformer): remove type dependency on Long #3022 @legendecas
  • fix(grpc-exporter): use non-normalized URL to determine channel security #3019 @pichlermarc
  • fix(otlp-exporter-base): fix gzip output stream in http otlp export #3046 @mattolson
  • docs(grpc-exporters): remove 'web' as supported from README.md #3070 @pichlermarc

🏠 (Internal)

  • test: add node 18 and remove EoL node versions #3048 @dyladan

0.29.2

  • Support for 1.3.1 of stable packages

0.29.1

🐛 (Bug Fix)

  • fix(sdk-metrics-base): only record non-negative histogram values #3002 @pichlermarc
  • fix(otlp-transformer): include missing prepublishOnly script which ensures esm and esnext build files are created and packaged @dyladan

0.29.0

💥 Breaking Change

  • feat(metrics): metric readers and exporters now select aggregation temporality based on instrument type #2902 @seemk
  • refactor(metrics-sdk): rename InstrumentationLibrary -> InstrumentationScope #2959 @pichlermarc
  • feat(metrics): multi-instrument async callback support #2966 @legendecas
    • changes on meter.createObservableCounter, meter.createObservableGauge, meter.createObservableUpDownCounter
      • removed the second parameter callback
      • returns an Observable object on which callbacks can be registered or unregistered.
    • added meter.addBatchObservableCallback and meter.removeBatchObservableCallback.
  • fix: remove attributes from OTLPExporterConfigBase #2991 @flarna

🚀 (Enhancement)

  • feat(exporters): update proto version and use otlp-transformer #2929 @pichlermarc
  • fix(sdk-metrics-base): misbehaving aggregation temporality selector tolerance #2958 @legendecas
  • feat(trace-otlp-grpc): configure security with env vars #2827 @svetlanabrennan
  • feat(sdk-metrics-base): async instruments callback timeout #2742 @legendecas

🐛 (Bug Fix)

  • fix(opentelemetry-instrumentation-http): use correct origin when port is null #2948 @danielgblanco
  • fix(otlp-exporter-base): include esm and esnext in package files #2952 @dyladan
  • fix(otlp-http-exporter): update endpoint to match spec #2895 @svetlanabrennan
  • fix(instrumentation): only patch core modules if enabled #2993 @santigimeno
  • fix(otlp-transformer): include esm and esnext in package files and update README #2992 @pichlermarc
  • fix(metrics): specification compliant default metric unit #2983 @andyfleming
  • fix(opentelemetry-instrumentation): use all provided patches for the same file #2963 @Ugzuzg

0.28.0

💥 Breaking Change

  • feat(sdk-metrics-base): update metric exporter interfaces #2707 @srikanthccv
  • feat(api-metrics): remove observable types #2687 @legendecas
  • fix(otlp-http-exporter): remove content length header #2879 @svetlanabrennan
  • feat(experimental-packages): Update packages to latest SDK Version. #2871 @pichlermarc
    • removed the -wip suffix from api-metrics and metrics-sdk-base.
    • updated dependencies to stable packages to 1.1.1 for all "experimental" packages.
    • updated Metrics Exporters to the latest Metrics SDK (exporter-metrics-otlp-grpc, exporter-metrics-otlp-http, exporter-metrics-otlp-proto)
    • updated opentelemetry-sdk-node to the latest Metrics SDK.
    • updated otlp-transformer to the latest Metrics SDK.
    • updated all instrumentation-* packages to use local implementations of parseUrl() due to #2884
  • refactor(otlp-exporters) move base classes and associated types into their own packages #2893 @pichlermarc
    • otlp-exporter-base => OTLPExporterBase, OTLPExporterBrowserBase, OTLPExporterNodeBase
    • otlp-grpc-exporter-base => OTLPGRPCExporterNodeBase
    • otlp-proto-exporter-base => OTLPProtoExporterNodeBase

🚀 (Enhancement)

  • feat: spec compliant metric creation and sync instruments #2588 @dyladan
  • feat(api-metrics): async instruments spec compliance #2569 @legendecas
  • feat(sdk-metrics-base): add ValueType support for sync instruments #2776 @legendecas
  • feat(sdk-metrics-base): implement async instruments support #2686 @legendecas
  • feat(sdk-metrics-base): meter registration #2666 @legendecas
  • feat(sdk-metrics-base): bootstrap metrics exemplars #2641 @srikanthccv
  • feat(metrics-sdk): bootstrap aggregation support #2634 @legendecas
  • feat(metrics-sdk): bootstrap views api #2625 @legendecas
  • feat(sdk-metrics): bootstrap metric streams #2636 @legendecas
  • feat(views): add FilteringAttributesProcessor #2733 @pichlermarc
  • feat(metric-reader): add metric-reader #2681 @pichlermarc
  • feat(sdk-metrics-base): document and export basic APIs #2725 @legendecas
  • feat(views): Update addView() to disallow named views that select more than one instrument. #2820 @pichlermarc
  • feat(sdk-metrics-base): update exporting names #2829 @legendecas
  • Add grpc compression to trace-otlp-grpc exporter #2813 @svetlanabrennan
  • refactor: unifying shutdown once with BindOnceFuture #2695 @legendecas
  • feat(prometheus): update prometheus exporter with wip metrics sdk #2824 @legendecas
  • feat(instrumentation-xhr): add applyCustomAttributesOnSpan hook #2134 @mhennoch
  • feat(proto): add @opentelemetry/otlp-transformer package with hand-rolled transformation #2746 @dyladan
  • feat(sdk-metrics-base): shutdown and forceflush on MeterProvider #2890 @legendecas
  • feat(sdk-metrics-base): return the same meter for identical input to getMeter #2901 @legendecas
  • feat(otlp-exporter): add OTEL_EXPORTER_OTLP_TIMEOUT env var to otlp exporters #2738 @svetlanabrennan
  • feat(sdk-metrics-base): hoist async instrument callback invocations #2822 @legendecas

🐛 (Bug Fix)

  • fix(sdk-metrics-base): remove aggregator.toMetricData dependency on AggregationTemporality #2676 @legendecas
  • fix(sdk-metrics-base): coerce histogram boundaries to be implicit Infinity #2859 @legendecas
  • fix(instrumentation-http): HTTP 400 status code should not set span status to error on servers #2789 @nordfjord

📚 (Refine Doc)

  • Update metrics example #2658 @svetlanabrennan
  • docs(api-metrics): add notes on ObservableResult.observe #2712 @legendecas

🏠 (Internal)

  • chore: move trace exporters back to experimental #2835 @dyladan
  • refactor(sdk-metrics-base): meter shared states #2821 @legendecas

v0.27.0

💥 Breaking Change

  • #2566 feat!(metrics): remove batch observer (@dyladan)
  • #2485 feat!: Split metric and trace exporters into new experimental packages (@willarmiros)
  • #2540 fix(sdk-metrics-base): remove metric kind BATCH_OBSERVER (@legendecas)
  • #2496 feat(api-metrics): rename metric instruments to match feature-freeze API specification (@legendecas)

🚀 (Enhancement)

  • #2523 feat: Rename Labels to Attributes (@pirgeo)
  • #2559 feat(api-metrics): remove bind/unbind and bound instruments (@legendecas)
  • #2563 feat(sdk-metrics-base): remove per-meter config on MeterProvider.getMeter (@legendecas)

🐛 (Bug Fix)

  • #2610 fix: preventing double enable for instrumentation that has been already enabled (@obecny)
  • #2581 feat: lazy initialization of the gzip stream (@fungiboletus)
  • #2584 fix: fixing compatibility versions for detectors (@obecny)
  • #2558 fix(@opentelemetry/exporter-prometheus): unref prometheus server to prevent process running indefinitely (@mothershipper)
  • #2495 fix(sdk-metrics-base): metrics name should be in the max length of 63 (@legendecas)
  • #2497 feat(@opentelemetry-instrumentation-fetch): support reading response body from the hook applyCustomAttributesOnSpan (@echoontheway)

📚 (Refine Doc)

🏠 (Internal)

Previous releases

For changelog entries for previous releases see the CHANGELOG.md.