open-telemetry/opentelemetry-js experimental/v0.212.0

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0.212.0

💥 Breaking Changes

• feat(sdk-logs)!: move environment variable configuration to @opentelemetry/sdk-node #6325 @pichlermarc
  • (user-facing): environment variable configuration is no longer applied automatically when instantiating SDK components
    (LoggerProvider, BatchLogRecordProcessor) directly from @opentelemetry/sdk-logs. Please migrate to using
    NodeSDK from @opentelemetry/sdk-node to get automatic environment variable configuration.

🚀 Features

• feat(configuration): add Prometheus exporter support #6400 @MikeGoldsmith
• feat(sampler-composite): add ComposableAnnotatingSampler and ComposableRuleBasedSampler #6305 @trentm
• feat(configuration): parse config for rc 3 #6304 @maryliag
• feat(instrumentation): use the internals: true option with import-in-the-middle hook, allowing instrumentations to hook internal files in ES modules #6344 @trentm

🐛 Bug Fixes

• fix(configuration): remove default propagator initialization #6399 @MikeGoldsmith
• fix(instrumentation-fetch): preserve Response.url, type, and redirected properties #6243 @AnubhavPurohit691
  • The fetch instrumentation now preserves the read-only url, type, and redirected properties from the original Response object when wrapping it with a Proxy. This fixes issues where code relying on these properties (e.g., CORS type detection) would fail with instrumented fetch.
• fix(exporter-prometheus): add missing @opentelemetry/semantic-conventions dependency #6330 @omizha
• fix(otlp-transformer): correctly handle Uint8Array attribute values when serializing to JSON #6348 @pichlermarc
• fix(otlp-exporter-base): fix unwanted instrumentation of the fetch exports when context is not propagated #6353 @david-luna

🏠 Internal

• perf(otlp-transformer): optimize toAnyValue performance #6287 @AbhiPrasad