To use it, on command line type:
npm app.js [data] [desired amount]
If the file lives inside the data folder of the application you only need to pass the name:
example: npm app.js 'mydata.csv' 1000
You can also pass an absolute path from the app:
example: npm app.js '../../data/mydata.csv' 1000
To run test type:
npm test
To run example type:
npm start