What is Logging in Node.js?
Logging helps developers know what it is that their code is actually doing, and can help developers save hours of debugging work. One of the key purposes of logging is to save information about each flow or runtime. This is the same information that a developer uses to understand their application.
Best NodeJS Logging Libraries
Winston
Winston is designed to be a simple and universal logging library with support for multiple transports. A transport is essentially a storage device for your logs. Each Winston logger can have multiple transports configured at different priority levels.
Bunyan
Bunyan is a simple and fast JSON logging library for node.js services. Just like Winston, it also supports logging into multiple transport options. Other features include a neat-printing CLI for logs, a log filter, serializers for rendering objects, snooping system, etc.
Pino
Pino is a super fast, all-natural JSON logger. There are claims that it is 5x faster than other Node.js logging libraries besides providing standard features such as the ability to choose a storage medium, log levels, and formatting capabilities.
Morgan
Morgan is an HTTP request logger middleware for node.js implemented using Express & Node.js. It can be used to log requests, errors, and more to the console.
LogLevel
LogLevel provides minimal lightweight simple logging for JavaScript. LogLevel replaces console.log() and friends with level-based logging and filtering, with none of the console's downsides.
Signale
A logging library that is hackable and configurable to the core, signale can be used for logging purposes, status reporting, etc.
Tracer
Tracer is a powerful and customizable logging library for node.js. It lets you print log messages with a timestamp, file name, method name, line number, path or call stack, customize output format with micro-template and timestamp format, support user-defined logging levels, etc.
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Read Also: How to Update Node.js to the Latest Version on Ubuntu
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