@rotorsoft/act-pino

Pino logger adapter for the @rotorsoft/act event sourcing framework.

Replaces Act's built-in ConsoleLogger with pino — structured JSON logging, log levels, transports, redaction, and pretty-printing in development.

Install

pnpm add @rotorsoft/act-pino

Quick Start

import { log } from "@rotorsoft/act";
import { PinoLogger } from "@rotorsoft/act-pino";

// Replace the default logger — all framework logging now goes through pino
log(new PinoLogger());

Configuration

PinoLogger accepts an options object:

| Option | Type | Default | Description | |--------|------|---------|-------------| | level | string | config().logLevel | Log level (trace, debug, info, warn, error, fatal) | | pretty | boolean | true in non-production | Enable pino-pretty for human-readable output | | options | pino.LoggerOptions | {} | Pass-through to pino (transports, serializers, redaction, etc.) |

Examples

// Custom log level
log(new PinoLogger({ level: "debug" }));

// Disable pretty-printing (structured JSON only)
log(new PinoLogger({ pretty: false }));

// Pino-native options (redaction, serializers, etc.)
log(new PinoLogger({
  options: {
    redact: ["password", "secret", "token"],
    serializers: {
      req: (req) => ({ method: req.method, url: req.url }),
    },
  },
}));

Logger Interface

PinoLogger implements the Act framework's Logger interface:

interface Logger {
  level: string;
  trace(obj: unknown, msg?: string): void;
  debug(obj: unknown, msg?: string): void;
  info(obj: unknown, msg?: string): void;
  warn(obj: unknown, msg?: string): void;
  error(obj: unknown, msg?: string): void;
  fatal(obj: unknown, msg?: string): void;
  child(bindings: Record<string, unknown>): Logger;
  dispose(): Promise<void>;
}

String and object messages

const logger = new PinoLogger();

// String message
logger.info("Server started");

// Object with message
logger.info({ port: 4000 }, "Server started");

// Object only (no message)
logger.info({ event: "startup", port: 4000 });

Child loggers

Create scoped loggers with inherited bindings:

const parent = new PinoLogger();
const child = parent.child({ module: "payments" });

child.info("Processing payment"); // includes { module: "payments" }

Cleanup

await logger.dispose(); // flushes buffered logs

Environment Integration

PinoLogger reads defaults from Act's config():

• logLevel — controlled by LOG_LEVEL env var (default: "info")
• logSingleLine — controlled by LOG_SINGLE_LINE env var (affects pino-pretty formatting)
• env — when "production", pretty-printing is disabled by default (structured JSON output)

License

MIT