Loki gRPC Client

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library 2.2.0 ·javascript
verified Jun 4, 2026

A TypeScript-native gRPC client for sending log entries to Grafana Loki. Version 2.2.0 is the latest stable release, actively maintained by Balena with a moderate release cadence. It wraps Loki's Protobuf API (logproto) for efficient binary transport, supports TLS and connection pooling, and provides a simple streaming interface. Differentiates from HTTP-based clients (e.g., winston-loki, loki-transport-winston) by using gRPC for lower latency and higher throughput, and ships with full TypeScript definitions.