In this book, you will find a number of text styles that distinguish between different kinds of information. Here are some examples of these styles and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "This GruntFile.js is necessary to setup all of the Grunt tasks."

A block of code is set as follows:

class MyClass {
    add(x, y) {
        return x + y;
    }
}

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

class MyClass {
    add(x, y) {
        return x + y;
    }
}

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

tsc app.ts

New terms and important words are shown in bold. Words that you see on the screen, for example, in menus or dialog boxes, appear in the text like this: "After selecting a Name and browsing for a directory, clicking on OK will generate a TypeScript project."