running the coffee scripts

[infamouswb]

For the following:
./indexer ./assets/frontend > ./assets/frontend/.index-xhr
./indexer ./assets/cores > ./assets/cores/.index-xhr

or

cd ${ROOT_WWW_PATH}/assets/frontend/bundle
../../../indexer > .index-xhr
cd ${ROOT_WWW_PATH}/assets/cores
../../indexer > .index-xhr

I am using Ubuntu 16.04 and when I try to run it coffee and then the above mentioned, it says it doesn't exist or under coffee I indexer does not exist. Maybe there is a prereq that I am missing?

Can someone point me in the right direction. How are you supposed to access the program on the web with reverse proxy after?

[orbea]

Excuse my ignorance, what are the coffee scripts?

[RobLoach]

These? https://github.com/libretro/RetroArch/blob/0f4744bed7cdb2f86e0a533f9ccdc263fa3a270b/pkg/emscripten/libretro/indexer