Set the entry point to index.ts and feel free to provide the other information with appropriate values. Fill out all the information being asked. mkdir node-express-typescript-starter & npm init. If we apply all these new types in our code, our code should look like this. Open your terminal and create your folder and package.json using. And, lastly, the Dog type alias is the combination of two interfaces BaseParams and DogDetails we achieved this by using the & intersection type. The DogBreed type alias is also a helper type that referenced in the Pagination interface and also the DogDetails interface. ![]() The interface Empty is a helper interface type that we will use for empty objects. The interface Pagination is the type we will use for the position ReqQuery, this type has a property breed the references another custom type that we will be talking about soon. Its the easiest way to build Express apps with MySQL, PostgreSQL & SQL Server databases. In this post, we learn how to add Typescript to the mix. The interface APIResponse is the type that we will use for the ResBody position, this type also has a generic just like the type BaseParams, the generic ResultType type will be the type of the data property. Prisma is a next-generation ORM for Node.js & TypeScript. Express is the most ubiquitous framework for nodejs. The interface DogDetails is the type we will use for the ReqBody position. ![]() First, the interface BaseParams is the type we will provide to the Params position, the BaseParams has Generic type IDType which has a default value of type number you can also provide a different type for the id by passing another type here BaseParams. Ok, I will explain all these new types that you see. Enter fullscreen mode Exit fullscreen mode
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