Compiling our TypeScript

We already looked at the very first script in TypeScript, but it buys us nothing new. So let’s look at how we can use typed variables, and how it will stop errors, on a simple scale. So if we want to expand on our first example, we might want to use a variable. Now TypeScript…

We’ve already seen the standard data types in JavaScript and TypeScript. However, JavaScript allows for class, and we want to therefore be able to define a custom data type within TypeScript. Since JavaScript supports classes and object-oriented programming, so does TypeScript. You can explicitly describe this object’s shape using an interface declaration. Then, to define an object…

People, when they come to TypeScript, might have different ideas in mind with how strict they want types checked. Some people don’t want types at all, like JavaScript currently is, and want to use other aspects of TypeScript, while others might want to be very strict. The default experience with TypeScript, where types are optional,…

The tsconfig.json file specifies the root files and the compiler options required to compile a TypeScript project. So presence of a tsconfig.json file in a directory indicates that the directory is the root of a TypeScript project. Without that file, the compiler will continue to move up the directory hierarchy to fine the config file. There is also a…

It is common to write a function where the return data type is related to the data type(s) of the parameters passed to the functions. Let’s look at an example of this: This function will return the first element of an array. However, it uses the any data type to allow for any type of…

To install TypeScript, it is helpful to have Node.JS because you will need nvm to install the TypeScript. To install Node.JS if you don’t have it, you can go to https://nodejs.org/en/download/prebuilt-installer to download an installer. On that page, you can choose your OS, the version of the software, and which processor you want. Download the…