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

To use the isBefore function from the date-fns library in TypeScript, you first need to install the date-fns library in your project using npm:

index.ts
npm install date-fns
21 chars
2 lines

After installing the library, you can import the isBefore function from the date-fns package in your TypeScript file and use it in your code as follows:

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

const date1 = new Date('2021-08-01');
const date2 = new Date('2021-08-15');

if (isBefore(date1, date2)) {
  console.log('date1 is before date2');
} else {
  console.log('date2 is before date1');
}
236 chars
11 lines

In the code above, we first imported the isBefore function from the date-fns library. We then created two date objects date1 and date2 with different dates. Finally, we used the isBefore function to check if date1 is before date2, and logged the result to the console.

Note that the isBefore function returns a boolean value, true if the first date is before the second, false otherwise.