/usr/lib/coffee-script/src/index.coffee is in coffeescript 1.10.0~dfsg-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | # Loader for CoffeeScript as a Node.js library.
exports[key] = val for key, val of require './coffee-script'
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