Originally starting out as just a project to learn ECMA6 by converting and updating a collection of scripts but now plan to continue developing it into a game.
The game will (eventually) be a strategic urban survival game in a procedurally generated city.
Most changes are being pushed into the develop branch so make sure to look there for the latest workings.
For coding updates you can visit the dev blog
You can transpile the code to ECMA5 using Google's Closure Compiler by running the following from the project root:
java -jar closure-compiler-v20180506.jar --language_in=ECMASCRIPT_2017 --language_out=ES5_STRICT --module_resolution=NODE --compilation_level ADVANCED_OPTIMIZATIONS --js_output_file=./js/exitus.min.js --js './js/src/**.js'