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

To use the differenceInCalendarWeeks function from the date-fns library in TypeScript, you will need to install the date-fns library first:

npm install date-fns
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You can then import the differenceInCalendarWeeks function from the date-fns library and use it as follows:

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

const date1 = new Date('2021-01-01');
const date2 = new Date('2021-01-15');

const weeksDiff = differenceInCalendarWeeks(date2, date1);

console.log('Weeks difference:', weeksDiff); // Output: Weeks difference: 2
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In this example, we have imported the differenceInCalendarWeeks function from the date-fns library and passed two dates as arguments to the function. The function returns the number of calendar weeks between the two dates.

We have then stored the result in the weeksDiff variable and logged it to the console. The output of this example is Weeks difference: 2.