In TypeScript, what is the method to define and invoke a function for a particular object type?

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In TypeScript, you can define a function for a particular object type using an interface. Here is an example:

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

function sayHello(person: Person) {
  console.log(`Hello, ${person.name}! You are ${person.age} years old.`);
}

const john: Person = {
  name: 'John',
  age: 30
};

sayHello(john);

In this example, we define an interface Person with properties name and age. We then define a function sayHello that takes a parameter of type Person, and logs a greeting to the console. Finally, we create an object john that conforms to the Person interface and call the sayHello function with john as the argument.

To invoke a function for a particular object type, you simply call the function with an object that matches the interface type.