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

To use the getDay function from the date-fns library in TypeScript, you first need to install the library:

index.ts
npm install date-fns
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Then, you can import the getDay function and use it like this:

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

const date = new Date('2021-01-23');
const dayOfWeek = getDay(date); // returns 6 (0 is Sunday, 6 is Saturday)
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The getDay function accepts a Date object as its parameter and returns the day of the week as an integer, where Sunday is 0 and Saturday is 6.