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

To use the getISOWeeksInYear function from the date-fns library in TypeScript, you can simply import the function and call it with a valid Date object.

Here's an example:

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

const myDate = new Date('2022-01-01'); // January 1st, 2022
const isoWeeksInYear = getISOWeeksInYear(myDate); // 52

console.log(`ISO weeks in year: ${isoWeeksInYear}`);
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In this example, we first import the getISOWeeksInYear function from the date-fns library. We then create a new Date object with a date of January 1st, 2022. We pass this object as an argument to the getISOWeeksInYear function, which returns the number of ISO weeks in the year of the provided date.

Finally, we log the result to the console. The output will be:

index.ts
ISO weeks in year: 52
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