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

To use the differenceInHours function from the date-fns library in TypeScript, you need to first install the date-fns library by running the following command in your terminal:

npm install date-fns
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Once the installation is complete, you can import the differenceInHours function in your TypeScript code as follows:

index.ts
import { differenceInHours } from 'date-fns';
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Then you can use the differenceInHours function to calculate the difference in hours between two dates. For example:

index.ts
const start = new Date('2021-01-01T00:00:00.000Z');
const end = new Date('2021-01-01T12:00:00.000Z');
const diffInHours = differenceInHours(end, start); // this will return 12
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Here, we are calculating the difference in hours between two dates: start and end. We pass these dates as arguments to the differenceInHours function, which returns the difference in hours as a number.

Note that the differenceInHours function expects the dates to be provided in the UTC format. If your dates are in a different format, you may need to convert them to UTC before passing them to the differenceInHours function.