3 ms·
AFAIK, the CoffeeScript guys are working intensely on it. To some extent, any language which has accurate source position information in its parser/AST, and use
by cromwellian 15y ago
AFAIK, the CoffeeScript guys are working intensely on it. To some extent, any language which has accurate source position information in its parser/AST, and uses Closure Compiler on the backend can get source map output almost for free.
- YmMot 15y agoYea I would imagine they are. I haven't been following the development like I used to, so thanks. How accurate does the source position information have to be? I don't think the CoffeeScript lexer can output column numbers (at least it didn't last time I checked) and the re-writing stage might give them a little trouble. Should be doable though. Guess I should head over to github and see how they're doing and start reading the SourceMap spec.
- cromwellian 15y agoIIRC, you only need line number and filename. The map is JS <startline/startcol> -> Source <line,filename>
- jschorr 15y agoHowever, you can embed extra metadata for your specific source language if you wish, via the extension mechanism. Debug tools can then read the metadata in to do extra neat kinds of mapping (such as collapsing "native" stack frames).
- politician 15y agoHere's a link to the CoffeeScript discussion on source maps (with a working alternate solution). https://github.com/jashkenas/coffee-script/issues/558 https://github.com/jashkenas/coffee-script/issues/558