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

To use the hoursToMilliseconds function from the date-fns library in TypeScript, you first need to install the date-fns library. Here's how you can install it using npm:

npm install date-fns
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Once you have installed the library, you can import the function into your project and use it to convert hours to milliseconds as follows:

import { hoursToMilliseconds } from 'date-fns';

const hours = 4;
const milliseconds = hoursToMilliseconds(hours); // returns 14400000
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In the above example, we first import the hoursToMilliseconds function from the date-fns library. We then define a variable hours with a value of 4. We then call the hoursToMilliseconds function and pass in the hours variable as an argument. The function returns the equivalent number of milliseconds, which we store in the milliseconds variable.

Note that the hoursToMilliseconds function returns a number, which represents the number of milliseconds that correspond to the given number of hours.