TypeScript has seen a significant rise in popularity and is currently the seventh most popular language, with developers expressing interest in learning it. It is a superset of JavaScript that adds type checking capabilities. In this article, we discuss how to integrate LaunchDarkly's Node.js SDK into a TypeScript project and the React SDK for frontend use in a TypeScript project. By using types provided by the SDK, developers can incorporate type checking throughout their code. The integration process involves importing necessary modules, initializing clients, and handling flag values.