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LogTape is a logging library for JavaScript and TypeScript. It provides a simple and flexible logging system that is easy to use and easy to extend. The highlights of LogTape are:

• Zero dependencies: LogTape has zero dependencies. You can use LogTape without worrying about the dependencies of LogTape.

• Library support : LogTape is designed to be used in libraries as well as applications. You can use LogTape in libraries to provide logging capabilities to users of the libraries.

• Runtime diversity : LogTape supports Deno, Node.js, Bun, edge functions, and browsers. You can use LogTape in various environments without changing the code.

• Structured logging : You can log messages with structured data.

• Hierarchical categories : LogTape uses a hierarchical category system to manage loggers. You can control the verbosity of log messages by setting the log level of loggers at different levels of the category hierarchy.

• Template literals : LogTape supports template literals for log messages. You can use template literals to log messages with placeholders and values.

• Built-in data redaction : LogTape provides robust capabilities to redact sensitive information from logs using pattern-based or field-based approaches.

• Dead simple sinks : You can easily add your own sinks to LogTape.

LogTape is available on JSR and npm. You can install LogTape for various JavaScript runtimes and package managers:

deno add jsr:@logtape/logtape # for Deno
npm add @logtape/logtape # for npm
pnpm add @logtape/logtape # for pnpm
yarn add @logtape/logtape # for Yarn
bun add @logtape/logtape # for Bun

See also the installation manual for more details.

LogTape is a monorepo that contains several packages. The main package is @logtape/logtape, which provides the core logging functionality. Other packages provide additional features and integrations. The following is a list of the packages in the LogTape monorepo:

The docs of LogTape is available at https://logtape.org/. For the API references, see https://jsr.io/@logtape/logtape.