app.js

const yargs = require('yargs')
const chalk = require('chalk')
const notes = require('./notes.js')
yargs.command({
    command : 'add',
    describe : 'Add a new note using this command',
    builder:{
        title : {
            describe:'Note Title',
            demandOption: true,
            type: 'string'
        },
        body:{
            description:'Note Body',
            demandOption : true,
            type: 'string'
        }
    },
    handler : function(argv){
        notes.addNotes(argv.title,argv.body)
    }

})
yargs.command({
    command : 'remove',
    describe : 'Delete a note using this command',
    builder : {
        title : {
            describe : 'Notes Title',
            demandOption : true,
            type: 'string'
        }
    },
    handler :  function(argv){
        notes.removeNotes(argv.title)
    }
})
yargs.command({
    command: 'list',
    describe: 'Listing all notes from the notebook',
    handler : function(){
        notes.listNotes()
    }
})
yargs.command({
    command : 'read',
    describe : 'Read a note using this command',
    builder : {
        title : {
            describe : 'Notes Title',
            demandOption : true,
            type: 'string'
        }
    },
    handler :  function(argv){
        notes.readNotes(argv.title)
    }
})
yargs.parse()