WIP cat for JS source maps.

npm install source-map-cat
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cat for Javascript sourcemaps


npm install --global source-map-cat

Example Usage (run from project test directory):

# Create or find files with source maps

../node_modules/typescript/bin/tsc --sourcemap hello.ts

../node_modules/coffee-script-redux/bin/coffee --js -i > goodbye.js
../node_modules/coffee-script-redux/bin/coffee --source-map -i >

curl --remote-name-all \ \ \

# Strip source map urls
sed -i '.bak' '/sourceMappingURL/d' hello.js goodbye.js jquery-1.9.0.min.js

# Concatenate JS files
cat hello.js goodbye.js jquery-1.9.0.min.js > hello-goodbye-jquery-min.js

# Concatenate source maps
source-map-cat --source-file hello-goodbye-jquery-min.js \ >

# Append source map url to combined file (or use HTTP X-SourceMap header)
echo '//@' >> hello-goodbye-jquery-min.js

# Generate a test HTML page
echo '<script src="hello-goodbye-jquery-min.js"></script>' > index.html

# Serve
python -m SimpleHTTPServer 3000 localhost

# Open tab to check
python -m webbrowser -t http://localhost:3000/

# Enable source maps in developer tools
# Should see concatenated source
# and original sources and breakpoints should map correctly.
Tools and Languages with Source Map Support
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