concat-with-sourcemaps is a Node.js package enabling the concatenation of files while meticulously preserving source maps. It intelligently merges source maps, resulting in accurate debugging information even after concatenation. This is crucial for maintaining code traceability in complex JavaScript projects. Using this, developers can simplify bundling processes. The package handles various source map formats, providing flexibility and reliability. Simplifies managing and merging of files, while ensuring accurate source map output.