Grubber is a lightweight JavaScript/TypeScript library that lets developers search and replace patterns in source code using regular expressions while automatically ignoring comments, strings and other non‑code sections. It ships with built‑in language rules (JS/TS, Rust, CSS/SCSS, Python, C/C++, Nim, etc.) and helper methods for extracting or rewriting import‑style dependencies, making it useful for tooling, linting or refactoring scripts that need safe regex‑based code analysis without building a full AST.