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

To use the isExists function from date-fns library in JavaScript, follow these steps:

1. Install the date-fns library using npm or Yarn:

npm install date-fns
# or
yarn add date-fns
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2. Import the isExists function in your JS file:

import { isExists } from 'date-fns';
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3. Pass the input date to the function to check if it is a valid date:

const inputDate = new Date('2022-02-29');
const result = isExists(inputDate);
console.log(result); // false
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In this example, the isExists function returns false because 29th Feb 2022 is an invalid date. If the input date is valid, the function will return true.