$ npm install -g jsbsim.js

$ npm run build

$ jsbsim.js [script file name] [output file names] <options>

--help  returns this message
--version  returns the version number
--outputlogfile=<filename>  sets (overrides) the name of a data output file
--logdirectivefile=<filename>  specifies the name of a data logging directives file
                               (can appear multiple times)
--root=<path>  specifies the JSBSim root directory (where aircraft/, engine/, etc. reside)
--aircraft=<filename>  specifies the name of the aircraft to be modeled
--script=<filename>  specifies a script to run
--realtime  specifies to run in actual real world time
--nice  specifies to run at lower CPU usage
--nohighlight  specifies that console output should be pure text only (no color)
--suspend  specifies to suspend the simulation after initialization
--initfile=<filename>  specifies an initilization file
--catalog specifies that all properties for this aircraft model should be printed
          (catalog=aircraftname is an optional format)
--property=<name=value> e.g. --property=simulation/integrator/rate/rotational=1
--simulation-rate=<rate (double)> specifies the sim dT time or frequency
                  If rate specified is less than 1, it is interpreted as
                  a time step size, otherwise it is assumed to be a rate in Hertz.
--end=<time (double)> specifies the sim end time

NOTE: There can be no spaces around the = sign when
      an option is followed by a filename

$ npm install

$ npm test