pino pino-pretty log pattern

[JonathanTurnock]

I recently spent some time figuring out how to use the pino-pretty plugin effectively. Since it wasn’t as straightforward as I initially hoped, I wanted to share my configuration and insights to help others avoid similar challenges.

Below is the setup I used, along with the key patterns and format details:

Field	Value
Name	PinoPretty
Message Pattern	^\[(\d{2}:\d{2}:\d{2}\.\d{3})\]\s+(\w+)\s+\(([^)]+)\):\s+(.*)$
Message start pattern	:\s+.*
Time Format	HH:MM:SS.FF3
Time capture group	1
Severity capture group	2
Category capture group	3

Pino Config

Pino Pretty Config

import pino from "pino";

const transport = pino.transport({
	targets: [
		{
			level: "warn",
			target: "pino-pretty", // must be installed separately
		},
		{
			level: "trace",
			target: "pino-pretty",
			options: {
				destination: ".logs/combined.log",
				colorize: false,
				append: false,
			},
		},
	],
});

export const rootLogger = pino(transport);

export const createLogger = (name: string) => {
	return rootLogger.child({ name });
};

Preview