Our TypeScript tutorial is intended for experienced programmers and those who have never used TypeScript before.
We cover all the concepts that will help you learn TypeScript in our TypeScript tutorial.
Classes, interfaces, inheritance, modules, and other object-oriented language features are included in the object-oriented TypeScript programming language.
- TypeScript allows us to write code for both the client and server sides of the development process.
It contains elements of the TypeScript programming language. It includes syntax, keyword definitions, and annotations for types.
For instance, typing $ tsc helloworld.ts/ changes the TS file hello-world to the helloworld.js file.
How the compiler is configured
The TypeScript compiler’s configuration is saved in the tsconfig.json file, which has the following format:
3. Language Services in TypeScript
By providing information, the language service enables editors and other tools to provide better help features such as IntelliSense and automated refactoring. It demonstrates the presence of a second layer surrounding the core-compiler pipeline. Colorization, statement completion, signature help, and the ability to format and outline code are some standard editor features.
The TypeScript language is divided into three primary layers. Each of these levels is made up of parts or sublayers.
- TypeScript’s compiler
- The Language Services for TypeScript
How to Install TypeScript?
In this section, we’ll go over how to install TypeScript, what must be done before installing TypeScript, and the various methods for doing so.
TypeScript can be configured in two ways:
- TypeScript can be installed using the Node.js Package Manager (npm).
- Install the TypeScript plug-in for your IDE (Integrated Development Environment).
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TypeScript installation using the Node.js Package Manager (npm)
Step–1 Install Node.js.
It was used to install TypeScript on our computer.
Step–2 Install TypeScript.
Step–3 To ensure the installation went smoothly, enter the command $ tsc -v into the Terminal Window.
Install the TypeScript IDE plug-in.
Step–1 You can install an IDE such as Eclipse, Visual Studio, WebStorm, Atom, or Sublime Text if necessary.
Step–2: Install a TypeScript plug-in.
Using the official compiler, we can also run our script online. To finish, click the link below. https://www.typescriptlang.org/play/index.html
TypeScript includes an optional Type System, which allows you to work with data types. TypeScript data types are classified as follows.
A static type is defined as “at compile time” or “without running a programme” in type systems. The types of variables, parameters, and objects in a statically typed language are known to the compiler as the code is written. When the compiler checked the type, it used this information.Static types is divided into following two categories-
1.User defined DataType
TypeScript can handle the following types of user-defined data:
These are the following built in data types in TypeScript:
Generic is used to create a part that can work with multiple data types rather than just one. It enables the creation of parts that can be reused. It ensures that the programme can be changed and expanded over time. Generics are used by TypeScript’s type variable T>, which stands for types. Generic functions and non-generic functions are both of the same types. The type arguments come first, just like in function declarations.
Designers and Decorators are data types associated with a class declaration, method, property, accessor, or argument. It allows adding annotations and a meta-programming syntax to classes and methods. It is used in conjunction with the “@” symbol.
A decorator is an unfinished feature that may be changed in the next release. To use the decorator, we must enable the experimentalDecorators compiler option either on the command line or in our tsconfig.json file.