Caterpillar is the ultimate logging system for Deno, Node.js, and Web Browsers. Log levels are implemented to the RFC standard. Log entries can be filtered and piped to various streams, including coloured output to the terminal, the browser's console, and debug files. You can even write your own transforms.
bevry/caterpillar has 402 GitHub stars.
It currently ranks #7405 daily, #8645 weekly, #12603 monthly by momentum on Trending Repos; its best-ever rank is #830.