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

To use the lastDayOfDecade function from the date-fns library in TypeScript, you need to install the date-fns package and import the lastDayOfDecade function into your TypeScript file.

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

const date = new Date();
const lastDayOfDecadeDate = lastDayOfDecade(date);

console.log(lastDayOfDecadeDate);
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In the above example, we first import lastDayOfDecade function from the date-fns library. We then create a new Date instance and pass it to the lastDayOfDecade function which returns the date of the last day of the decade to which the given date belongs. Finally, we output the result using console.log.