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

To use the startOfMonth function from the date-fns library in TypeScript, you would first need to install the library and its types. You can do this using npm as follows:

$ npm install date-fns @types/date-fns
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After installing the library and its types, you can import the startOfMonth function and use it in your code as follows:

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

const date = new Date();
const startOfMonthDate = startOfMonth(date);

console.log(startOfMonthDate); // Output: 2022-01-01T00:00:00.000Z
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In the code above, we imported the startOfMonth function from the date-fns library, and then used it to get the start of the month for the current date. The resulting date is then logged to the console.

Note that startOfMonth returns a new Date object representing the start of the month for the given date, without modifying the original date object.