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

To use the startOfSecond function from date-fns library in TypeScript, we need to install the @types/date-fns package. This package provides type definitions for the date-fns functions.

index.ts
npm install date-fns @types/date-fns
37 chars
2 lines

Once installed, we can import the startOfSecond function from date-fns and use it in our TypeScript code as follows:

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

const now = new Date(); // get the current date and time
const startOfNextSecond = startOfSecond(now); // calculate the start of the next second

console.log(startOfNextSecond); // Output: 2021-08-23T02:55:26.000Z
257 chars
7 lines

In the above code, we first import the startOfSecond function from date-fns library. We then create a new Date object to get the current date and time. We pass this object to the startOfSecond function, which returns a new Date object that represents the start of the current second. Finally, we log this new Date object to the console.

Note that the startOfSecond function truncates any milliseconds in the input date object and returns a new Date object that represents the start of the corresponding second.