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

To use the isSaturday function from date-fns in JavaScript, first you need to install the date-fns package using npm or yarn:

npm install date-fns
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or

yarn add date-fns
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Then you can import the isSaturday function from date-fns in your JavaScript code and use it as shown below:

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

const date = new Date('2022-01-01');

if (isSaturday(date)) {
  console.log('It is a Saturday!');
} else {
  console.log('It is not a Saturday!');
}
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In the example above, we imported the isSaturday function from date-fns and used it to check if the date object is a Saturday. If the isSaturday function returns true, we log It is a Saturday! to the console, otherwise we log It is not a Saturday!.