To get the most out of this book

• You should have a basic knowledge of TypeScript in order to work with the content in this book. Knowledge of HTML and web pages would be useful as well.
• Where download code uses a package manager such as npm, you need to know how to restore the packages, because we haven't included them in the repository. To restore them, you can use npm install in the same directory that package.json is in, and that will restore the packages.
• In the last chapter, you won't have to explicitly download missing packages. Visual Studio will restore these packages when you build the project.