how to use the isexists function from the date-fns library in typescript

To use the isExists function from the date-fns library in TypeScript, you first need to install the library and its types:

npm install date-fns
npm install @types/date-fns
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Then, you can import the function in your TypeScript file and use it like this:

index.ts
import { isExists } from 'date-fns';

const date = new Date(2021, 0, 31); // January 31st, 2021
const exists = isExists(date); // true
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The isExists function checks if a given date is valid or not, taking into account leap years and different month lengths. It returns true if the date exists, and false otherwise.