Combine source maps of two compilation steps

Question

I\'ve got a two-step compilation process for my web application. Firstly, I compile CoffeeScript files into JavaScript files [1]. Then the JavaScript files (both ones that c

Answer 1

The combine-source-map package, a Mozilla [source-map] wrapper looks like a more popular alternative to [sorcery], as Rich Harris had recommended (2M vs. 32k downloads).

By the product page's own description, combine-source-map will:

Add source maps of multiple files, offset them and then combine them into one source map.

After evaluating merge-source-maps it looks promising, even though it only handles file system-based sources in source maps. It crashes when using inline sources (may be a limitation of the original code from closure compiler). With a few changes, it can be made to properly handle inline sources, as well.