Learn how to create an authentication middleware in Node.js and Express.js using TypeScript to validate user access API using JWT in this step-by-step tutorial
Learn how to create router-level middleware in Express.js using TypeScript and understand the difference between application-level and router-level middleware
The question mark (?:) in TypeScript is used to define a property or parameter as optional. This article shows examples to understand this concept and more.
You can use optional parameters in TypeScript by adding a question mark ? at the end of each parameters to avoid passing all parameters defined in a function.
Have you been using TypeScript for a while but you are not sure how the…
New types came with the release of TypeScript 3.0. One of them is the unknown type which we will cover in this complete guide with easy examples to follow.
Are you are new to TypeScript and want to start working on your first project? Some of the questions many…
The double question marks (??) are also called nullish coalescing operators in TypeScript. They allow to use of a default value set on the right side of the operator in case the initial value from the left side of the operator is null or undefined.
Learn how to define object types with unknown keys and known values using TypeScript by explaining with easy code examples.
Learn different ways to declare an empty object for a typed variable using TypeScript by presenting easy to follow examples
