Experimental v0.48.0

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