What are the best practices for using JSON in TypeScript?

What are the best practices for using JSON in TypeScript?

When using JSON in TypeScript, it's important to define interfaces for your data structures. This helps with type safety.

Can you give me an example of how to define an interface for a JSON object?

Sure! For example, if you have a JSON object like { "name": "John", "age": 30 }, you can define an interface like this:

interface Person {
  name: string;
  age: number;
}

How do I handle optional properties in a JSON object?

You can use the ? operator in your interface. For example:

interface Person {
  name: string;
  age?: number; // age is optional
}

What about parsing JSON data? Any tips?

Always use JSON.parse with a type assertion to ensure the parsed data matches your interface. For example:

const jsonData = JSON.parse(jsonString) as Person;