how to use the isprototypeof function from the underscore library in typescript

To use the isPrototypeOf function from the Underscore library in TypeScript, you need to include the Underscore type definitions in your project.

1. First, install the Underscore type definitions by running the following command in your terminal:

npm install --save-dev @types/underscore
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2. Once you have installed the type definitions, you can import the isPrototypeOf function from Underscore and use it in your TypeScript code, like so:

index.ts
import { isPrototypeOf } from 'underscore';

interface MyInterface {
  myFunc(): void;
}

class MyClass implements MyInterface {
  myFunc(): void {
    console.log('Hello');
  }
}

let myObj = new MyClass();

// Check if MyInterface is a prototype of myObj
if (isPrototypeOf(MyInterface, myObj)) {
  console.log('MyClass implements MyInterface');
}
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In this example, we have defined an interface MyInterface and a class MyClass that implements this interface. We then create an instance of MyClass and check if MyInterface is a prototype of this object using the isPrototypeOf function.

Note that we pass in the constructor function MyInterface as the first argument to isPrototypeOf, followed by the object we want to check (myObj) as the second argument.

I hope that helps!