Source Maps
Source maps are files that map transformed or minified code (e.g., JavaScript, CSS) back to the original source code, enabling debugging in development tools. They work by providing a mapping between the generated code and the original source files, including line and column numbers. This allows developers to view and debug their original code directly in browsers or IDEs, even when the deployed code is optimized or transpiled.
Developers should use source maps when working with minified, bundled, or transpiled code (e.g., from TypeScript, Babel, or Webpack) to maintain debuggability in production-like environments. They are essential for debugging complex applications where source code undergoes transformations, as they allow setting breakpoints and inspecting variables in the original source rather than the unreadable output. This improves development efficiency and reduces errors by providing a clear view of the code during testing and debugging phases.