browserify-livescript is an npm module that allows livescript files to be seemlessly integrated into a project through browserify. If you are not familiar with browserify, I strongly encourage you to read up.
To use browserify-livescript in a project, include it as a dev-dependency in your package.json file. Then pass it as a transform to browserify. at the command line (or in a makefile or through grunt, etc.).
browserify -t browserify-livescript file.ls > output.js
browserify-livescript supports sourcemaps "out of the box" the only thing the user needs to do is to instruct browserify to use the source maps by including the '-d' flag.
browserify -d -t browserify-livescript file.ls > output.js