Description: A source map is a file that maps from the transformed source to the original source, allowing the browser to reconstruct the original source. This mechanism is essential for web performance optimization, as it facilitates debugging and enhances user experience by allowing developers to use custom fonts without compromising readability or site aesthetics. Source maps are particularly useful when using compression tools or CSS and JavaScript preprocessors, which can transform the original code into more efficient versions. Without a source map, errors in the transformed code would be difficult to trace, as the lines of code in the compressed file do not match those in the original source file. By providing a clear reference between the two, source maps enable developers to identify and fix issues more effectively, resulting in a more streamlined workflow and a higher quality final product. In summary, source maps are a crucial tool in modern web development, improving both the efficiency of the development process and the end-user experience.
