LogTape

LogTape is a zero-dependency logging library for JavaScript and TypeScript across Node.js, Bun, Deno, browsers, and edge runtimes.

Official sources:

• LogTape docs: https://logtape.org/
• Official skill source: https://github.com/dahlia/logtape/tree/main/packages/logtape/skills/logtape

Core Rules

• Configure LogTape once in the application entry point, before framework startup.
• Do not call configure() or configureSync() from reusable library code.
• Use array categories for hierarchical filtering: getLogger(["app", "module", "operation"]).
• Prefer structured messages with named placeholders and a properties object.
• Use template literal logging only for quick debug messages that do not need structured fields.
• Attach request, tenant, user, sync, or job context through logger context rather than string concatenation.
• Reset LogTape in test teardown when tests configure it.