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

To use the monthsToQuarters function from date-fns in JavaScript, you need to follow these steps:

1. First, install the date-fns package using either npm or yarn.

index.tsx
npm install date-fns
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or

index.tsx
yarn add date-fns
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2. Import the monthsToQuarters function and other necessary dependencies into your JavaScript file.

index.tsx
import { monthsToQuarters } from 'date-fns';
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3. Call the monthsToQuarters function by passing in a date object as the first argument and an optional options object as the second argument. The function returns the number of quarters between the two dates.

index.tsx
const start = new Date(2019, 1, 1); // February 1, 2019
const end = new Date(2021, 2, 1); // March 1, 2021

const quarters = monthsToQuarters(start, {
  inclusive: true, // optional option that includes the end date
});

console.log(quarters); // 8
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The monthsToQuarters function takes two arguments, the first being the start date, and the second being an options object with the following optional keys:

• additionalMonths (number): The number of additional months to add to the calculation (default: 0)
• inclusive (boolean): Whether or not to include the end date in the calculation (default: false)

In the example above, we passed in an options object with the inclusive key set to true so that the end date would be included in the calculation.