Sorcery.js is a Node‑module and CLI tool that collapses a chain of JavaScript sourcemaps—produced by multiple transformations such as transpiling, concatenation, and minification—into a single “flattened” map pointing back to the original source code. It’s aimed at developers who need accurate debugging information for complex build pipelines, letting them load a final‑output file, trace locations back to the original sources, and write updated maps either as separate files or inline data URIs.