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: "We need to install webpack by typing the following in our terminal."

A block of code is set as follows:

interface IPrinter {
  print(IPrintable printable);
}

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

interface IPrintable {
  String getContent();
}

interface IPrinter {
  print(IPrintable printable);
}

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

npm install webpack webpack-cli --save-dev

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: "Let's add an item to our store by adding a value to our input element and pressing the Save button."