fullstack-build/tslog

Health v2 · maintenance only

Adoption not part of the score

1737 stars · 73 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

tslog is a universal, fully typed logging library for TypeScript and JavaScript that runs in Node.js, browsers, Deno, Bun, workers, and React Native. It provides pretty colored console output by default, structured fields-first JSON for observability pipelines, secret masking, sub-loggers, and pluggable transports and middleware.

Use cases

• add structured JSON logging to a Node.js API for log pipelines
• pretty-print logs with source-mapped line numbers and stack traces in TypeScript
• log consistently across Node.js, browser, Deno, and Bun with one library
• mask secrets and sensitive keys in log output
• create child loggers with inherited settings for modules or agents
• add logging to LLM agent workflows with session correlation

When to choose

• you want a zero-dependency, tree-shakeable logger for TypeScript/JavaScript across runtimes
• you need both human-friendly pretty output and machine-readable JSON from the same logger
• you want built-in secret masking, sub-loggers, and typed middleware/transports

When to avoid

• you need a battle-tested log aggregator or distributed tracing backend rather than a logging library
• you are locked to CommonJS, since v5 is ESM-only
• you need file-based or rotating log sinks out of the box

Facets

library · maturity active

logging error-handling serialization developer-tools backend frontend monitoring bun browser cross-platform typescript structured-logging pretty-print stacktrace secret-masking llm-agents zero-dependencies esm nodejs deno

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markdown · JSON · MCP: product_card(name="fullstack-build/tslog")