JSPM

Strip ANSI escape codes from a string

ANSI escape codes for styling strings in the terminal

Terminal string styling done right

Wordwrap a string with ANSI escape codes

ANSI escape codes for manipulating the terminal

Slice a string with ANSI escape codes

Colored symbols for various log levels. Example: `✔︎ Success`

Easily add ANSI colors to your text and symbols in the terminal. A faster drop-in replacement for chalk, kleur and turbocolor (without the dependencies and rendering bugs).

Log by overwriting the previous output in the terminal. Useful for rendering progress bars, animations, etc.

Definitions of levels for logging purposes & shareable Symbol constants.

An mutable object-based log format designed for chaining & objectMode streams.

A logger for just about everything.

A collection of standard object serializers for Pino

CommonJS version - The smallest and fastest command-line coloring package on the internet

Minimal lightweight logging for JavaScript, adding reliable log level methods to any available console.log methods

Microsoft Azure SDK for JavaScript - Logger

Port of Log4js to work with node.

Environment-agnostic, ESM-friendly logger for simple needs.

The smallest and fastest command-line coloring package on the internet

Terminal string styling with tagged template literals

Colors, formatting and other tools for the console

A noop logger that conforms to the Log4j interface for modules to stub out internal logging

Logging utility used by Node Slack SDK

A logger for the Webpack ecosystem

Log things, prefixed with a timestamp.

The color gray, in ansi.

OpenTelemetry Collector Exporter allows user to send collected log records to the OpenTelemetry Collector

OpenTelemetry instrumentation for `winston` logger

Stream transformer that prefixes lines with timestamps and other things.

OpenTelemetry instrumentation for `bunyan` logger

Cloud Logging Client Library for Node.js

OpenTelemetry instrumentation for `cassandra-driver` database client library for Apache Cassandra

Plugin for loglevel message prefixing

Logger for gulp and gulp plugins

a JSON logging library for node.js services

OpenTelemetry instrumentation for `pino` logger

Global logging utility

Elegant spinner for interactive CLI apps

userland implementation of https://github.com/joyent/node/issues/5243

Parse and format xcodebuild logs

Beautiful color gradients in terminal output

Display pretty Android and iOS logs without Android Studio or Console.app, with intuitive Command Line Interface.

The color cyan, in ansi.

log-driver is a simple logging framework for logging to stdout

The color red, in ansi.

a JSON logging library for node.js services

A tiny JSON logger

Check if gulplog is available before attempting to use it

A node.js version of unix's `tail -f` command

The most simple logger imaginable

OpenTelemetry Transport for winston

A modern logging library for Node.js and modern browsers that provides log level mapping to the console

The logging package for the Powertools for AWS Lambda (TypeScript) library

Stats object for reporting performance statistics

JavaScript environment detection for browser and Node

Summarize any SQL query

JavaScript debug logging for browser and Node

JavaScript SDK for [LogRocket](https://logrocket.com/)

Effortlessly track and debug errors in your JavaScript applications with Rollbar. This package includes advanced error tracking features and an intuitive interface to help you identify and fix issues more quickly.

express.js middleware for winstonjs/winston

Strip ANSI color codes from a string. No dependencies.

The official Elastic APM agent for Node.js

More than 130 Handlebars helpers in ~20 categories. Helpers can be used with Assemble, Generate, Verb, Ghost, gulp-handlebars, grunt-handlebars, consolidate, or any node.js/Handlebars project.

Cloud Logging transport for Winston

The color grey, in ansi.

The color dim, in ansi.

Just a simple logging module for your Electron application

Cross-platform success symbol.

The color green, in ansi.

Your CLI formatting friend.

The color blue, in ansi.

The color bgcyan, in ansi.

The color yellow, in ansi.

The color bgred, in ansi.

The color bgwhite, in ansi.

The color inverse, in ansi.

Cross-platform warning symbol.

The color bgmagenta, in ansi.

Cross-platform error symbol.

log-update fork that uses async-exit-hook internally

The color bold, in ansi.

The color magenta, in ansi.

The color bgblue, in ansi.

The color italic, in ansi.

The color bgyellow, in ansi.

The color black, in ansi.

The color reset, in ansi.

The color white, in ansi.

The color strikethrough, in ansi.

Cross-platform info symbol.

The color bgblack, in ansi.

The color underline, in ansi.

The color bggreen, in ansi.

The color hidden, in ansi.

Extensible TypeScript Logger for Node.js and Browser.

Show some ❤️ to process errors

Send logs to Amazon Cloudwatch using Winston.

Express middleware to log each request and response

Pino destination formatter for AWS Lambda

JSON logging patcher for Next.js

Debug utility with markdown support that runs on browser and server

Multi-colour console output from chalk with added awesome

Better Stack logging core (formerly Logtail)

JavaScript console instrumentation for browser and Node

Basic template helpers for printing messages out to the console. Useful for debugging context in templates. Should work with any template engine.

Cloudflare Workers client for Sentry

A client implementation for Loggly cloud Logging-as-a-Service API

For libraries that want to include log4js for logging, but don't want to introduce version conflicts for users that also use log4js. Delegates to whatever log4js version can be found, but does not introduce a specific log4js version.

TCP and UDP syslog client RFC 5424 & RFC 3164

Better Stack Node.js logger (formerly Logtail)

More than 130 Handlebars helpers in ~20 categories. Helpers can be used with Assemble, Generate, Verb, Ghost, gulp-handlebars, grunt-handlebars, consolidate, or any node.js/Handlebars project.

The official javascript bindings for the Axiom API

A Winston transport for Grafana Loki

Cloud Logging Client Library for Node.js

Filter out unwanted `console.log()` output

Better Stack Typescript types (formerly Logtail)

Terminal string styling done right

A JavaScript ANSI color/style management. ANSI parsing. ANSI to CSS. Small, clean, no dependencies.

Express & Koa middlewares and Fastify & Hapi plugins for CLS-based request id generation, batteries included

[](https://www.npmjs.com/package/ngx-logger)

Axios interceptor of logging requests & responses by debug.

Syslog parser and producer

An Elasticsearch transport for winston

I need more intel.

@sentry/node transport for the winston v3 logger

a JSON logging library for node.js services (dtrace is disabled)

A syslog transport for winston

A nodejs implementation for sending logs to Logz.IO cloud service Copy of logzio-nodejs

Logging tool for Cloud Foundry

The OpenReplay tracker main package

debug improvements

Cloud Logging stream for Bunyan

A logger abstraction for libraries

hocuspocus logging extension

A transport for pino that sends messages to Loki

A client implementation for Loggly cloud Logging-as-a-Service API

Record all your interactions with Claude Code as you develop your projects

debug module using logfmt format

Correlation id for node.js

Console.log transformation pipes

Sends structured log events to the Seq HTTP ingestion API

Lightweight logging library for any Node 10+ applications

Logger built on top of pino to be used by AdonisJs

Get a logger. Any logger.

An HTTP traffic monitor for React Native with zero dependencies

A modern logging library with a fluent API for specifying log messages, metadata and errors

Parses logs and stringifies logs into the logfmt format

Forge beautiful changelog automatically.

The logger for Antora.

Open source, fullstack monitoring. Capture frontend errors, record server side logs, and visualize what broke with session replay.

A winston transport wrapper for logzio

A MongoDB transport for winston

This module provides functionality to logging data for vechain-sdk

Lightweight client & server-side logging with Stream-API backends and counting, timing support

Base plugin used to implement plugins for loglayer.

Better Stack Pino transport (formerly Logtail)

Splunk HTTP Event Collector logging interface

Better Stack Winston transport (formerly Logtail)

Base transport used to implement logging transports for loglayer.

A super quick, easy to setup logging tool for NodeJS/TypeScript.

A Datadog Logs transport for Winston

A Loggly transport for winston

A Slack transport for Winston 3 that logs to a channel via webhooks.

Shared utilities and types for loglayer packages.

Express middleware to correlate requests across http calls

Attach a CloudWatch LogSubscription to your functions' logs

A tiny and fast package for adding colors to your terminal output.

Base context manager used to implement context managers for loglayer.

A stream implementation of the bunyan cli tool's pretty printing capabilities

a JSON logging library for node.js services (dtrace is disabled)

Colorful animations in terminal output

A logging library that combines the simplicity and convenience of debug with the power of bunyan

TypeScript Logging core written in and to be used by TypeScript (this is the core project, you need to install a flavor too).

Logs Slonik queries.

Simple Javascript logger for Node.js and Browsers

Updates the previous output in the terminal. Useful for correct rendering progress bars, animations, etc.

Client side logger.

Node bindings for spdlog

A Winston v3 transport for Seq

A Logstash transport for winston

The Stacks logging system.

morgan logging req, res, and body

A logging helper for Node JS Edit

The Graylog Extended Log Format for the Node.js

A Pothos plugin for tracing and logging resolver invocations

A pluggable logging utility with built-in colors, styles, and modes.

Simple logging library with zero dependencies for Deno/Node.js/Bun/browsers

Bunyan logging specifically for the browser

LogDNA's Node.js Logging Module.

The universal logger

256 xterm color codes

Better Stack browser logging (formerly Logtail)

Tracker plugin for screen assistance through the WebRTC

Raygun package for Node.js, written in TypeScript

Azure Application Insights transport for Winston

Redux middleware for propagating Redux state/actions to use with new @sentry/browser and @sentry/node.

A minimal but effective logging mechanism with support for log levels and pluggable log appenders.

Simple logging package. Use on client and/or server. On the client, sends logs to the server and stores them in your existing server side logs. On the server, log to console or use Winston transports. Ideal for logging exceptions, AJAX timeouts.

Pino transport for the LogLayer logging library.

React Native plugin for integrating the Instabug SDK

Dead-simple, stateless logging utility for JavaScript and TypeScript. Pure functions. No dependencies. Just log.

Support for Windows services, event logging, UAC, and several helper methods for interacting with the OS.

@sentry/node transport for pino logger

Logging on steroids with CLS and Proxy. Integrated with express, koa, fastify.

Fast effective logging library for both Node, the Browser, and Workers!

A console log appender for the Aurelia logging library.

Create updatable log lines into the terminal, and give life to your logs!

Simple and easy stdio capture for Node.js

A simple npm utility module for logging

Like winston-seq, but updated. Temporary package

This package provides a [simple configuration][] to use with [Pino][] to make it adhere to Google Cloud Logging [structured logging][].

High performance debug logging

Stream for logging to s3 with rotated object names. Usable as a wiston-file stream.

DataDog transport for the LogLayer logging library.

Console log colors helper for simple lightweight useage, no external dependencies.

A transport for pino that sends messages to DataDog

Simple logging support using the standard Mocha reporting style

A transport for pino that rotates logs

Get the current line number of the executing file and method

A graylog2 transport for winston

Strip console, alert, and debugger statements from JavaScript code

Pino Transport abstraction for Google Cloud Logging.

A Papertrail transport for winston

Logs Slonik queries.

Node.js logging facade to decouple frameworks, libraries and application code from specific logging implementations.

A flexible and simple JS logging library that allows logging or collecting logs in different environments by configuring various Appenders. Suitable for browser, NodeJS and other environments.

Winston-lite-esque Log lib for terminal and browser debugging, with piles of unignorable log tags and marker styles.

A modern logging & debugging utility. For browser & server.

A Winston transport for Amazon CloudWatch.

Strip console and debugger statements from JavaScript code

log4javascript

a rotating file stream for the bunyan logging system

A debugging library for RxJS

Datadog Browser Logs transport for the LogLayer logging library.

A common core for Logflare javascript transports.

sprintf plugin for loglayer.

Rapid7 Insight Platform client for node; use with or without Winston or Bunyan.

A variant of `morgan.compile` that provides format functions that output JSON

Easy, simple & beautiful logs

A DebugAppender for `base-log-factory`.

A ColorfulAppender for `base-log-factory`.

Colorful animations in terminal output

Convert JSON or JavaScript objects into clean, human-readable plain text format.

Koa middleware for logging requests using bunyan

Pretty log output in the terminal / browser / Next.js for the LogLayer logging library.

Flexible logging functionality for Vue.js 2 & 3

A simple winston wrapper for generating logger instance per module and log tags

An updated rollbar transport for winston

Composable loggers for TypeScript

A structured logging framework for JavaScript, inspired by Serilog.