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

To use the isSunday function from the date-fns library in TypeScript, you need to install the library first by running the following command in your terminal:

index.ts
npm install date-fns
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Then, you can import the isSunday function and use it in your TypeScript code like this:

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

const myDate = new Date('2022-05-15'); // May 15 2022 is a Sunday
const isMyDateSunday = isSunday(myDate);

if (isMyDateSunday) {
  console.log('My date is a Sunday!');
} else {
  console.log('My date is not a Sunday :(');
}
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The isSunday function takes a Date object as parameter and returns a boolean value indicating whether the given date is a Sunday or not. You can then use this boolean value to perform conditional logic in your TypeScript code.