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

date-fns is a popular library for working with dates in JavaScript. It provides a range of functions for formatting, parsing and manipulating dates. One of the most basic functions from this library is the constructor function, which creates a new instance of the Date object initialized with a date.

Here's an example of how to use the constructor function from date-fns in JavaScript:

index.tsx
const { format, addDays } = require('date-fns'); // import the required functions from date-fns

// create a new instance of the Date object with the current date
const today = new Date();

// create a new instance of the Date object with a custom date (in this case, 7 days from now)
const nextWeek = addDays(today, 7);

// format the dates using the format function from date-fns
const formattedToday = format(today, 'yyyy-MM-dd');
const formattedNextWeek = format(nextWeek, 'yyyy-MM-dd');

console.log('Today:', formattedToday);
console.log('Next week:', formattedNextWeek);
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In this example, we import the required functions from date-fns, create a new instance of the Date object with the current date and with a custom date (7 days from now) using the addDays function, and format the dates using the format function. Finally, we log the formatted dates to the console.

Note that the format function takes two arguments: the date object and a format string. The format string specifies how the date should be formatted, using a combination of letters and symbols that represent different parts of the date, such as the year (yyyy), the month (MM), and the day (dd).