how to use the isprototypeof function from date-fns in javascript

To use the isPrototypeOf function from the date-fns library in JavaScript, you need to first import the function from the library. Here's an example of how to do it:

index.tsx
import { isPrototypeOf } from 'date-fns';
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Alternatively, if you prefer, you can use the CommonJS require() syntax:

index.tsx
const isPrototypeOf = require('date-fns/is_prototype_of');
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Once you have the function imported, you can use it to check if a date is an instance of a particular date object.

Here's an example of how to use isPrototypeOf function:

index.tsx
import { isPrototypeOf } from 'date-fns';

const date = new Date();
const dateClone = new Date(date);

console.log(isPrototypeOf(Date.prototype, date)); // true
console.log(isPrototypeOf(Object.prototype, date)); // false

console.log(isPrototypeOf(Date.prototype, dateClone)); // true
console.log(isPrototypeOf(Object.prototype, dateClone)); // false
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The first parameter of the isPrototypeOf function is the prototype you want to compare against (in this example, Date.prototype or Object.prototype). The second parameter is the date object you want to check. The function returns true if the date object is an instance of the specified prototype, and false otherwise.

In this case, we create two Date objects (date and dateClone) and use the isPrototypeOf function to check whether they are instances of Date.prototype and Object.prototype. The output above shows that date is an instance of Date.prototype but not Object.prototype, while dateClone is an instance of both Date.prototype and Object.prototype.