What is LogTape?
LogTape is a logging library for JavaScript and TypeScript designed with a library-first philosophy. Unlike traditional loggers, LogTape is unobtrusive—libraries can safely log without any configuration, while applications retain full control. With zero dependencies and universal runtime support, it works seamlessly across Deno, Node.js, Bun, browsers, and edge functions.
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.
Framework integrations: First-class support for popular web frameworks like Express, Fastify, Hono, Koa, and ORMs like Drizzle ORM with automatic HTTP request logging and database query logging.
