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

To use the startOfHour() function from the date-fns library in TypeScript, first install the library using npm:

npm install date-fns
21 chars
2 lines

Then, import the function in your TypeScript file:

index.ts
import { startOfHour } from 'date-fns';
40 chars
2 lines

You can now use the startOfHour() function to get the start of the hour for any given date:

index.ts
const date = new Date(); // current date and time
const startOfHourDate = startOfHour(date); // start of the hour for the current date and time
console.log(startOfHourDate); // output: YYYY-MM-DDTHH:00:00.000Z
210 chars
4 lines

The startOfHour() function returns a new date object with the start of the hour set. Please note that the returned date object is in UTC format.