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

To use the endofhour function from date-fns in JavaScript, you will first need to install the package using npm or yarn:

npm install date-fns
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Once the package is installed, you can import the endOfHour function and use it to calculate the end of an hour for a given date/time:

index.tsx
import { endOfHour } from 'date-fns';

const date = new Date();
const endOfHour = endOfHour(date);

console.log(endOfHour);
// Output: [current date/time] with the minutes and seconds set to 59:59
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The endOfHour function takes a single argument - a date object representing the time you want to calculate the end of the hour for. It returns a new Date object with the minutes and seconds set to 59:59 of the same hour, effectively rounding off the input time to the end of the hour.

You can then use the returned date object for further calculations or display purposes.