Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Mount the downloaded WebStorm-10*.dmg disk image file as another disk in your system."

A block of code is set as follows:

console.log('Starting app.js');

const fs = require('fs');
const _ = require('lodash');
const yargs = require('yargs');

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

const argv = yargs.argv;
var command = process.argv[2];
console.log('Command:', command);
console.log('Process', process.argv);
console.log('Yargs', argv);

Any command-line input or output is written as follows:

cd hello-world
node app.js

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Select System info from the Administration panel."