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

To use the getISOWeek function from the date-fns library in TypeScript, you can follow these steps:

1. Install the date-fns library by running the following command in your terminal:

   index.ts
   npm install date-fns
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2. Import the getISOWeek function from the date-fns library:

   index.ts
   import { getISOWeek } from 'date-fns';
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3. Call the getISOWeek function with a Date object as its argument:

   index.ts
   const date = new Date('2022-01-01');
   const isoWeek = getISOWeek(date);
   console.log(isoWeek); // Output: 52
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In the example above, the getISOWeek function is used to get the ISO week number of the date 2022-01-01. The ISO week number represents the week of the year according to the ISO 8601 standard. The getISOWeek function returns a number from 1 to 53, depending on which week of the year the date falls in.