DEV Community 👩‍💻👨‍💻

Cover image for NPM debug style logging in Go
Derek Smith
Derek Smith

Posted on

NPM debug style logging in Go

I have always appreciated the debug logging pattern commonly used within NodeJS projects. As I worked more with go, I wanted to bring that logging pattern to the language.

kemba is a simple logging library that is a reimplementation of the npm debug module in hopes of bringing that capability to the language.

The kemba logger reads the DEBUG and KEMBA environment variables to determine if a log line should be output. The logger outputs to STDERR.

When it is not set, the logger will immediately return, taking no action.

When the value is set (ex. DEBUG=example:*,tool:details and/or KEMBA=plugin:fxn:start), the logger will determine if it should be enabled when instantiated.

The value of these flags can be a simple regex alternative where a wildcard (*) are replaced with .* and all terms are prepended with ^ and appended with $. If a term does not include a wildcard, then an exact match it required.

Mentioned in Awesome<br>

Top comments (0)

Thank you.

Thanks for visiting DEV, we’ve worked really hard to cultivate this great community and would love to have you join us. If you’d like to create an account, you can sign up here.