npx create-strapi-app my-project` is a command line used to create a new Strapi project. TypeScript is a superset of JavaScript, which means it uses the same syntax but includes newer features such as type-inference, generics, and private class members. These features improve upon JavaScript's native object-oriented features, making code more robust, cleaner, and easier to maintain. TypeScript automatically detects variable data types, eliminates runtime errors, and provides effective functions for classes, interfaces, and modules. It also offers flexible data types with generic functions, which allow users to write their own data type. With its wide range of features and feasibility, TypeScript is a great tool for JavaScript developers, especially when used with Strapi, an open-source, customizable headless CMS that can be used for building application backends and consuming content via APIs using any HTTP client or GraphQL-enabled frontend.