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

To be able to use the isthisquarter function from the date-fns library in your TypeScript project, you need to install the library and its type definitions. You can use npm or yarn to install them:

npm install date-fns
npm install -D @types/date-fns
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yarn add date-fns
yarn add -D @types/date-fns
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Once you have installed the date-fns library and its type definitions, you can import the isthisquarter function and use it in your TypeScript code:

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

const currentDate = new Date();
const isCurrentDateInThisQuarter = isThisQuarter(currentDate);

console.log(isCurrentDateInThisQuarter);
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This code will check if the current date is in the current quarter (i.e. if it is between January 1 and March 31, April 1 and June 30, July 1 and September 30, or October 1 and December 31). The isThisQuarter function returns true if the date is in the current quarter or false otherwise.