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

The differenceInCalendarMonths function from the date-fns library can be used to find the number of calendar months between two dates. Here's an example code snippet that demonstrates how to use this function:

index.tsx
const { differenceInCalendarMonths } = require('date-fns');

const startDate = new Date(2021, 0, 1); // January 1, 2021
const endDate = new Date(2021, 5, 30); // June 30, 2021

const diffInMonths = differenceInCalendarMonths(endDate, startDate);

console.log(diffInMonths); // Output: 5
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In the example above, we first import the differenceInCalendarMonths function from the date-fns library. We then create two Date objects representing the start and end dates. Finally, we call the differenceInCalendarMonths function with the end date and the start date as arguments, and store the result in the diffInMonths variable. We then log the diffInMonths variable to the console, which will output the number of calendar months between the two dates (in this case, 5).