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:
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Zero dependencies: LogTape has zero dependencies. You can use LogTape without worrying about the dependencies of LogTape.
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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.
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Runtime diversity: LogTape supports Deno, Node.js, Bun, edge functions, and browsers. You can use LogTape in various environments without changing the code.
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Structured logging: You can log messages with structured data.
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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.
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Template literals: LogTape supports template literals for log messages. You can use template literals to log messages with placeholders and values.
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Built-in data redaction: LogTape provides robust capabilities to redact sensitive information from logs using pattern-based or field-based approaches.
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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 BunSee 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:
| Package | JSR | npm | Description |
|---|---|---|---|
| @logtape/logtape | JSR | npm | Core logging functionality |
| @logtape/adaptor-pino | JSR | npm | Pino adapter |
| @logtape/adaptor-winston | JSR | npm | winston adapter |
| @logtape/cloudwatch-logs | JSR | npm | AWS CloudWatch Logs sink |
| @logtape/file | JSR | npm | File sinks |
| @logtape/otel | JSR | npm | OpenTelemetry sink |
| @logtape/pretty | JSR | npm | Beautiful text formatter |
| @logtape/redaction | JSR | npm | Data redaction |
| @logtape/sentry | JSR | npm | Sentry sink |
| @logtape/syslog | JSR | npm | Syslog sink |
| @logtape/windows-eventlog | JSR | npm | Windows Event Log sink |
The docs of LogTape is available at https://logtape.org/. For the API references, see https://jsr.io/@logtape/logtape.