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

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

index.ts
npm install date-fns
21 chars
2 lines

Then, you can import the isThisISOWeek function and use it like this:

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

const date = new Date('2022-01-01');
const isThisWeek = isThisISOWeek(date);
console.log(isThisWeek); // true
153 chars
6 lines

The isThisISOWeek function takes a Date object as an argument and returns a boolean value indicating whether the date is in the current ISO week or not.

Note that the isThisISOWeek function is a part of the date-fns package and not a default method on the Date object.