Amazon-Lambda-NodeJS-Hello-World-Template.js

'use strict';
console.log('Loading function');
exports.handler = (event, context, callback) => {	callback(null, event); };

random-number-generator.js

'use strict';

console.log('Starting FaaS:fn ');

exports.handler = (event, context, callback) => {
    const MIN_VALUE = 0;
    const MAX_VALUE = 10;
    
    const generatedNumber = Math.floor( Math.random() * MAX_VALUE ) + MIN_VALUE;
    
    
    /**
     *  fn:callback -> $err , $succ
     * 
     * $err => error message
     * $succ => success return
     */
    callback( null, generatedNumber );
};