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v0.1.1 — Apr 27, 2026

• Tracelit.metrics.observableGauge() — callback-based gauge that reads on export interval instead of on every call. Ideal for expensive computations like queue depth polling
• WinstonTransport — named export that bridges Winston logs to the OTel LoggerProvider with automatic trace_id / span_id injection
• createPinoDestination() — Pino multistream destination for forwarding logs to the Tracelit log pipeline
• Tracelit.expressMetricsMiddleware() — drop-in Express middleware that records http.server.request.count, http.server.request.duration, and http.server.error.count per route

• ErrorAlwaysOnSampler + ErrorSpanProcessor pair now guarantees error span export even at sampleRate: 0.0
• Console bridge (console.debug/log/info/warn/error) now preserves original output — no silent swallowing
• process.event_loop.lag histogram timer switched to unref() so it never prevents process exit
• Dual CJS + ESM bundles with TypeScript 5 declaration files — no moduleResolution shenanigans needed

• Fixed Tracelit.metrics returning stale null reference after Tracelit.start() called more than once
• Fixed ESM named exports (WinstonTransport, createPinoDestination) not resolving in some bundler setups