Typescript-powerful JavaScript with types.

Example

In TypeScript, you can declare variable types explicitly, which helps catch errors during development rather than at runtime. For instance, `let count: number = 'five';` will throw an error because 'five' is a string, not a number.

Scenario

Static typing is particularly useful in large codebases where multiple developers work on the same project. It ensures that everyone adheres to the same data structure and type expectations, preventing bugs and reducing the risk of introducing type-related errors.

Example

TypeScript can automatically infer the type of a variable based on its initial value, like `let count = 5;` where `count` is inferred as a `number`. This allows for cleaner code without sacrificing type safety.

Scenario

Type inference is useful in scenarios where you want the benefits of static typing without the verbosity of explicitly declaring types for every variable. It provides a balance between type safety and code simplicity.

Example

Interfaces allow you to define the shape of objects. For example, `interface User { name: string; age: number; }` defines a structure that any `User` object must follow.

Scenario

Using interfaces is crucial when developing complex applications that involve multiple components interacting with each other. Interfaces help define clear contracts between different parts of your application, ensuring that objects passed around conform to expected shapes, thus reducing errors.