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

To use the lastDayOfQuarter function from the date-fns library in TypeScript, you will need to install the date-fns library using NPM or Yarn:

index.ts
npm install date-fns
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or

index.ts
yarn add date-fns
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Once installed, you can import the function and use it as follows:

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

const date = new Date();
const lastDay = lastDayOfQuarter(date);

console.log(lastDay);
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This code will get the last day of the quarter for the current date and log it to the console. You can also pass a date string or a timestamp as the argument to lastDayOfQuarter.