Chapter 7. Using TypeScript and JavaScript in the same project
This chapter covers
- Enjoying TypeScript’s benefits when working with a JavaScript library
- The role of type definition files
- Upgrading an existing JavaScript app to TypeScript
In this chapter, we’ll show how you can benefit from TypeScript features such as getting compilation errors and autocomplete even while using third-party libraries written in JavaScript. We’ll start by explaining the role of type definition files, and then we’ll discuss a concrete use case where an app written in TypeScript uses a JavaScript library. Finally, we’ll discuss the things you should consider before implementing a gradual upgrade of your app from JavaScript to TypeScript.
7.1. Type definition ...
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